Researcher basic information

• 博士 （理学）, 立命館大学

• https://researchmap.jp/yukikimura?lang=en

• https://orcid.org/0000-0002-9218-7663
• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200901020947437592
• http://www.lowtem.hokudai.ac.jp/astro/ykimura/index.html
• http://db.tohoku.ac.jp/whois/detail/0704c108d125122d56649ba738c73896.html

• https://orcid.org/0000-0002-9218-7663

• 200901020947437592

• 宇宙ダスト
• 結晶成長
• 結晶
• 透過型電子顕微鏡
• 多環芳香族炭化水素
• 天体観測
• 天文学
• 表面
• その場観察
• 赤外スペクトル
• 惑星科学
• 均質核生成
• ナノ領域科学
• 干渉法
• 核形成
• 電子顕微鏡
• 実験
• 宇宙塵
• ナノ粒子
• microscopy
• experiments
• cosmic dust
• Nanoparticles

• Natural Science, Magnetism, superconductivity and strongly correlated systems
• Natural Science, Space and planetary sciences
• Natural Science, Astronomy
• Natural Science, Solid earth sciences
• Nanotechnology/Materials, Nanostructural physics
• Nanotechnology/Materials, Nanometer-scale chemistry

• Master's degree program, Graduate School of Science
• Doctoral (PhD) degree program, Graduate School of Science

Research activity information

• Apr. 2024, 令和六年度科学技術分野の文部科学大臣表彰 科学技術賞（研究部門）
• Mar. 2023, 日本金属学会, 第73回金属組織写真賞 奨励賞
• Jul. 2022, 日本セラミックス協会, 第47回学術写真賞 最優秀賞
• Mar. 2021, 公益財団法人 風戸研究奨励会, 第14回（令和2年度）風戸賞
• Oct. 2019, The Japanese Association for Crystal Growth, 36th Best Paper Award
  Elucidation of formation processes of cosmic dust particles based on homogeneous nucleation experiments
  KIMURA Yuki
• May 2019, Japan Geoscience Union, The 3rd Nishida Prize
  KIMURA Yuki
• Feb. 2019, Hokkaido University, President's Award for Outstanding Research
  KIMURA Yuki
• Feb. 2018, 日本学術振興会, 第14回（平成29年度）日本学術振興会賞
  木村 勇気
• Jan. 2017, 宇宙航空研究開発機構 宇宙科学研究所, 第3回宇宙科学研究所賞
  木村 勇気
• Jan. 2017, 北海道大学, 北海道大学研究総長賞
  木村 勇気
• Oct. 2016, 日本マイクログラビティ応用学会, 第12回 (2016年度) 日本マイクログラビティ応用学会研究奨励賞
  木村 勇気
• Mar. 2014, 日本セラミックス協会, 第３９回学術写真賞 最優秀賞
  隕石内部のSEM, Holography 観察からわかる太陽系形成期の「水」の痕跡
  佐藤岳志;山本和生;木村勇気
• 2013, "Schieber Prize", the International Organization for Crystal Growth
  Japan
• 2012, 日本物理学会領域9若手奨励賞
  Japan
• 2011, Best Poster Award at the International Conference on Materials for Advanced Technologies, 2011.
  Japan
• 2010, 平成22年度科学技術分野の文部科学大臣表彰 若手科学者賞
  Japan
• 2009, International School of Crystallization 2009 Accommodation Grant
• 2008, 日本結晶成長学会 第六回奨励賞
  Japan
• 2007, 2006年度 日本惑星科学会 最優秀研究者賞
  Japan
• 2002, 第32回 結晶成長国内会議 講演奨励賞
  Japan

• Characteristics of Natural Remanence Records in Fine‐Grained Particles Returned From Asteroid Ryugu
  Masahiko Sato; Yuki Kimura; Tadahiro Hatakeyama; Tomoki Nakamura; Satoshi Okuzumi; Sei‐ichiro Watanabe; Seiji Sugita; Satoshi Tanaka; Shogo Tachibana; Hisayoshi Yurimoto; Takaaki Noguchi; Ryuji Okazaki; Hikaru Yabuta; Hiroshi Naraoka; Kanako Sakamoto; Toru Yada; Masahiro Nishimura; Aiko Nakato; Akiko Miyazaki; Kasumi Yogata; Masanao Abe; Tatsuaki Okada; Tomohiro Usui; Makoto Yoshikawa; Takanao Saiki; Fuyuto Terui; Satoru Nakazawa; Yuichi Tsuda
  Journal of Geophysical Research: Planets, Feb. 2026, [Peer-reviewed], [International Magazine]
  Scientific journal
• Control of physical properties of lipid whisker oleogels by crystal morphology regulation
  Haruhiko Koizumi; Fumiya Nakano; Noritaka Oishi; Tomoya Yamazaki; Yuki Kimura; Kazuhiro Hamamoto; Satoru Ueno
  Food Research International, Jan. 2026
  Scientific journal
• Mie Voids for High-Pressure Refractive Index Sensing
  Hiromasa Niinomi; Hiroki Nada; Tetsuya Hama; Kazuhiro Gotoh; Yumiko Kodama; Tomoya Oshikiri; Masaru Nakagawa; Yuki Kimura
  The Journal of Physical Chemistry C, 20 Nov. 2025
  Scientific journal
• Creation of lipid whisker crystals for stable oleogel preparation
  Haruhiko Koizumi; Fumiya Nakano; Noritaka Oishi; Tomoya Yamazaki; Yuki Kimura; Shinji Tsuda; Satoru Ueno
  Food Research International, Aug. 2025, [Peer-reviewed], [International Magazine]
  Scientific journal
• Decoding the formation of barred olivine chondrules: Realization of numerical replication
  Tomoki Nakamura; Yuki Kimura; Tomoyo Morita; Akira Tsuchiyama; Kana Watanabe; Chihiro Koyama; Hitoshi Miura
  Science Advances, 23 May 2025, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  Scientific journal
• Transmission Electron Microscopy Imaging of Cluster Unit Dissolution from a Single Crystal of Tetra-n-butylammonium Fluoride Semiclathrate Hydrate for Latent-Heat Storage Material
  Hironobu Machida; Takeshi Sugahara; Hideki Hata; Tomohiko Ueda; Tomoya Yamazaki; Yuki Kimura
  ACS Applied Nano Materials, 28 Mar. 2025, [Peer-reviewed], [Corresponding author], [International Magazine]
  Scientific journal
• Micrometer-Scale Graphene-Based Liquid Cells of Highly Concentrated Salt Solutions for In Situ Liquid-Cell Transmission Electron Microscopy.
  Yuga Yashima; Tomoya Yamazaki; Yuki Kimura
  ACS omega, 9, 38, 39914, 39924, 24 Sep. 2024, [Peer-reviewed], [Last author, Corresponding author], [International Magazine]
  English, Scientific journal, In situ liquid-cell transmission microscopy has attracted much attention as a method for the direct observations of the dynamics of soft matter. A graphene liquid cell (GLC) has previously been investigated as an alternative to a conventional SiN x liquid cell. Although GLCs are capable of scavenging radicals and providing high spatial resolutions, their production is fundamentally stochastic, and a significant compositional change in liquids encapsulated in GLCs has recently been pointed out. We found that graphene-based liquid cells were formed in nano- to micrometer sizes with high reproducibility when the concentration of the encapsulated aqueous salt solution was high. In contrast, when we revisited conventional fabrication methods, water-encapsulated GLC was formed with low yield, and any electron diffraction spots from ice were not confirmed by a cooling experiment. The reason for this was the presence of intrinsic defects in the graphene, the presence of which we confirmed by the etch-pit method. The shrinkage of a water-encapsulated cell and a decrease in the bubble area in an aqueous (NH4)2SO4 solution cell suggested that volatile water molecules and gas molecules can leak from the cells during the fabrication and observation processes. Further revision of the conditions for the formation of liquid cells and a reduction in the number of intrinsic graphene defects are expected to lead to the provision of graphene-based liquid cells capable of encapsulating dilute aqueous solutions or pure water.
• Dependence of Homoimmiscible Water Dynamics on Overpressure at the Interface between Water and the Basal Plane of Single-Crystal Ice I_h
  Hiromasa Niinomi; Hiroki Nada; Tomoya Yamazaki; Tetsuya Hama; Akira Kouchi; Tomoya Oshikiri; Masaru Nakagawa; Yuki Kimura
  The Journal of Physical Chemistry C, American Chemical Society (ACS), 09 Sep. 2024, [Peer-reviewed], [Last author], [International Magazine]
  Scientific journal
• Enantioselective three-dimensional high-performance liquid chromatographic determination of amino acids in the Hayabusa2 returned samples from the asteroid Ryugu
  Aogu Furusho; Chiharu Ishii; Takeyuki Akita; Mai Oyaide; Masashi Mita; Hiroshi Naraoka; Yoshinori Takano; Jason P. Dworkin; Yasuhiro Oba; Toshiki Koga; Kazuhiko Fukushima; Dan Aoki; Minako Hashiguchi; Hajime Mita; Yoshito Chikaraishi; Naohiko Ohkouchi; Nanako O. Ogawa; Saburo Sakai; Daniel P. Glavin; Jamie E. Elsila; Eric T. Parker; José C. Aponte; Hannah L. McLain; Francois-Regis Orthous-Daunay; Véronique Vuitton; Roland Thissen; Cédric Wolters; Philippe Schmitt-Kopplin; Alexander Ruf; Junko Isa; Norbert Hertkorn; John M. Eiler; Toshihiro Yoshimura; Haruna Sugahara; Heather V. Graham; Yoshihiro Furukawa; Daisuke Araoka; Satoru Tanaka; Takaaki Yoshikawa; Fumie Kabashima; Kazunori Sasaki; Hajime Sato; Tomoya Yamazaki; Morihiko Onose; Mayu Morita; Yuki Kimura; Kuniyuki Kano; Junken Aoki; Kosuke Fujishima; Shin-ichiro Nomura; Shogo Tachibana
  Journal of Chromatography Open, May 2024, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Nonmagnetic framboid and associated iron nanoparticles with a space-weathered feature from asteroid Ryugu
  Yuki Kimura; Takeharu Kato; Satoshi Anada; Ryuji Yoshida; Kazuo Yamamoto; Toshiaki Tanigaki; Tetsuya Akashi; Hiroto Kasai; Kosuke Kurosawa; Tomoki Nakamura; Takaaki Noguchi; Masahiko Sato; Toru Matsumoto; Tomoyo Morita; Mizuha Kikuiri; Kana Amano; Eiichi Kagawa; Toru Yada; Masahiro Nishimura; Aiko Nakato; Akiko Miyazaki; Kasumi Yogata; Masanao Abe; Tatsuaki Okada; Tomohiro Usui; Makoto Yoshikawa; Takanao Saiki; Satoshi Tanaka; Fuyuto Terui; Satoru Nakazawa; Hisayoshi Yurimoto; Ryuji Okazaki; Hikaru Yabuta; Hiroshi Naraoka; Kanako Sakamoto; Sei-ichiro Watanabe; Yuichi Tsuda; Shogo Tachibana
  Nature Communications, 15, 1, Springer Science and Business Media LLC, 29 Apr. 2024, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  Scientific journal, Abstract
  
  Extraterrestrial minerals on the surface of airless Solar System bodies undergo gradual alteration processes known as space weathering over long periods of time. The signatures of space weathering help us understand the phenomena occurring in the Solar System. However, meteorites rarely retain the signatures, making it impossible to study the space weathering processes precisely. Here, we examine samples retrieved from the asteroid Ryugu by the Hayabusa2 spacecraft and discover the presence of nonmagnetic framboids through electron holography measurements that can visualize magnetic flux. Magnetite particles, which normally provide a record of the nebular magnetic field, have lost their magnetic properties by reduction via a high-velocity (>5 km s^–1) impact of a micrometeoroid with a diameter ranging from 2 to 20 μm after destruction of the parent body of Ryugu. Around these particles, thousands of metallic-iron nanoparticles with a vortex magnetic domain structure, which could have recorded a magnetic field in the impact event, are found. Through measuring the remanent magnetization of the iron nanoparticles, future studies are expected to elucidate the nature of the nebular/interplanetary magnetic fields after the termination of aqueous alteration in an asteroid.
• Diverse features of dust particles and their aggregates inferred from experimental nanoparticles
  Yuki Nakano; Yuki Kimura; Akihiko Hashimoto
  Monthly Notices of the Royal Astronomical Society: Letters, 29 Mar. 2024, [Peer-reviewed], [International Magazine]
  Scientific journal
• Machine Learning Refinement of In Situ Images Acquired by Low Electron Dose LC-TEM.
  Hiroyasu Katsuno; Yuki Kimura; Tomoya Yamazaki; Ichigaku Takigawa
  Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada, 29 Jan. 2024, [Peer-reviewed], [International Magazine]
  English, Scientific journal, We have studied a machine learning (ML) technique for refining images acquired during in situ observation using liquid-cell transmission electron microscopy. Our model is constructed using a U-Net architecture and a ResNet encoder. For training our ML model, we prepared an original image dataset that contained pairs of images of samples acquired with and without a solution present. The former images were used as noisy images, and the latter images were used as corresponding ground truth images. The number of pairs of image sets was 1,204, and the image sets included images acquired at several different magnifications and electron doses. The trained model converted a noisy image into a clear image. The time necessary for the conversion was on the order of 10 ms, and we applied the model to in situ observations using the software Gatan DigitalMicrograph (DM). Even if a nanoparticle was not visible in a view window in the DM software because of the low electron dose, it was visible in a successive refined image generated by our ML model.
• Chiral Spinodal-like Ordering of Homoimmiscible Water at Interface between Water and Chiral Ice III
  Hiromasa Niinomi; Tomoya Yamazaki; Hiroki Nada; Tetsuya Hama; Akira Kouchi; Tomoya Oshikiri; Masaru Nakagawa; Yuki Kimura
  The Journal of Physical Chemistry Letters, 659, 664, American Chemical Society (ACS), 11 Jan. 2024, [Peer-reviewed], [Last author], [International Magazine]
  Scientific journal
• Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium
  Sarah S. Zeichner; José C. Aponte; Surjyendu Bhattacharjee; Guannan Dong; Amy E. Hofmann; Jason P. Dworkin; Daniel P. Glavin; Jamie E. Elsila; Heather V. Graham; Hiroshi Naraoka; Yoshinori Takano; Shogo Tachibana; Allison T. Karp; Kliti Grice; Alex I. Holman; Katherine H. Freeman; Hisayoshi Yurimoto; Tomoki Nakamura; Takaaki Noguchi; Ryuji Okazaki; Hikaru Yabuta; Kanako Sakamoto; Toru Yada; Masahiro Nishimura; Aiko Nakato; Akiko Miyazaki; Kasumi Yogata; Masanao Abe; Tatsuaki Okada; Tomohiro Usui; Makoto Yoshikawa; Takanao Saiki; Satoshi Tanaka; Fuyuto Terui; Satoru Nakazawa; Sei-ichiro Watanabe; Yuichi Tsuda; Kenji Hamase; Kazuhiko Fukushima; Dan Aoki; Minako Hashiguchi; Hajime Mita; Yoshito Chikaraishi; Naohiko Ohkouchi; Nanako O. Ogawa; Saburo Sakai; Eric T. Parker; Hannah L. McLain; Francois-Regis Orthous-Daunay; Véronique Vuitton; Cédric Wolters; Philippe Schmitt-Kopplin; Norbert Hertkorn; Roland Thissen; Alexander Ruf; Junko Isa; Yasuhiro Oba; Toshiki Koga; Toshihiro Yoshimura; Daisuke Araoka; Haruna Sugahara; Aogu Furusho; Yoshihiro Furukawa; Junken Aoki; Kuniyuki Kano; Shin-ichiro M. Nomura; Kazunori Sasaki; Hajime Sato; Takaaki Yoshikawa; Satoru Tanaka; Mayu Morita; Morihiko Onose; Fumie Kabashima; Kosuke Fujishima; Tomoya Yamazaki; Yuki Kimura; John M. Eiler
  Science, 382, 6677, 1411, 1416, American Association for the Advancement of Science (AAAS), 22 Dec. 2023, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal, Polycyclic aromatic hydrocarbons (PAHs) contain ≲20% of the carbon in the interstellar medium. They are potentially produced in circumstellar environments (at temperatures ≳1000 kelvin), by (~10 kelvin) interstellar clouds, or by processing of carbon-rich dust grains. We report isotopic properties of PAHs extracted from samples of the asteroid Ryugu and the meteorite Murchison. The doubly- ¹³ C substituted compositions (Δ2× ¹³ C values) of the PAHs naphthalene, fluoranthene, and pyrene are 9 to 51‰ higher than values expected for a stochastic distribution of isotopes. The Δ2× ¹³ C values are higher than expected if the PAHs formed in a circumstellar environment, but consistent with formation in the interstellar medium. By contrast, the PAHs phenanthrene and anthracene in Ryugu samples have Δ2× ¹³ C values consistent with formation by higher-temperature reactions.
• In Situ Transmission Electron Microscopy Study of Bubble Behavior Near the Surface of Ice Crystals by Using a Liquid Cell With a Peltier Cooling Holder.
  Tomoya Yamazaki; Yuga Yashima; Hiroyasu Katsuno; Hiroya Miyazaki; Takashi Gondo; Yuki Kimura
  Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada, 29, 6, 1940, 1949, 21 Dec. 2023, [Peer-reviewed], [Last author, Corresponding author], [International Magazine]
  English, Scientific journal, Liquid cell transmission electron microscopy (LC-TEM) is a unique technique that permits in situ observations of various phenomena in liquids with high spatial and temporal resolutions. One difficulty with this technique is the control of the environmental conditions in the observation area. Control of the temperature ranging from room temperature to minus several tens of degrees Celsius, is desirable for controlling the supersaturation in various materials and for observing crystallization more easily. We have developed a cooling transmission electron microscopy specimen holder that uses Peltier devices, and we have combined it with a liquid cell to realize accurate temperature control in LC-TEM. We evaluated this system by using water as a specimen. Motionless bubbles, shown to be voids containing pressurized gas, formed in the specimen sometime after the temperature had reached -12°C. An electron diffraction pattern showed that the specimen turned into ice Ih after the formation of these bubbles, confirming that our system works properly and can induce crystallization. In addition, we analyzed the behavior of bubbles formed in the ice Ih, and we discussed the formation of these bubbles and their internal pressure.
• 機械学習によるデータ駆動型の液中透過型電子顕微鏡“その場”観察
  Yuki KIMURA; Hiroyasu KATSUNO; Shizuka HIRAKAWA; Tomoya YAMAZAKI
  Vacuum and Surface Science, 66, 12, 700, 705, Surface Science Society Japan, 10 Dec. 2023, [Peer-reviewed], [Invited], [Lead author, Corresponding author], [Domestic magazines]
  Scientific journal
• Dissolution enables dolomite crystal growth near ambient conditions.
  Joonsoo Kim; Yuki Kimura; Brian Puchala; Tomoya Yamazaki; Udo Becker; Wenhao Sun
  Science (New York, N.Y.), 382, 6673, 915, 920, 24 Nov. 2023, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal, Crystals grow in supersaturated solutions. A mysterious counterexample is dolomite CaMg(CO3)2, a geologically abundant sedimentary mineral that does not readily grow at ambient conditions, not even under highly supersaturated solutions. Using atomistic simulations, we show that dolomite initially precipitates a cation-disordered surface, where high surface strains inhibit further crystal growth. However, mild undersaturation will preferentially dissolve these disordered regions, enabling increased order upon reprecipitation. Our simulations predict that frequent cycling of a solution between supersaturation and undersaturation can accelerate dolomite growth by up to seven orders of magnitude. We validated our theory with in situ liquid cell transmission electron microscopy, directly observing bulk dolomite growth after pulses of dissolution. This mechanism explains why modern dolomite is primarily found in natural environments with pH or salinity fluctuations. More generally, it reveals that the growth and ripening of defect-free crystals can be facilitated by deliberate periods of mild dissolution.
• In situ cryogenic transmission electron microscopy observation on the formation of hydrogen-ordered hexagonal ices and its astrophysical implications
  Tomoya Yamazaki; Akira Kouchi; Ken-ichiro Murata; Hiroyasu Katsuno; Hiroki Nada; Tetsuya Hama; Yuki Kimura
  Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), 06 Nov. 2023, [Peer-reviewed], [Last author], ［Internationally co-authored］, [International Magazine]
  Scientific journal, Abstract
  
  Water ices play a critical role in various astrophysical phenomena and store information about the thermal history of icy grains. To understand this history, clarifying the formation conditions in astrophysical environments is critical. In addition to taking the form of amorphous ices, ice can take four crystalline forms: hexagonal ice I (ice Ih), cubic ice I (ice Ic) and hydrogen-ordered hexagonal ice (ice XIh) and cubic ice (ice XIc). The aim of this article is to study the conditions for phase transitions among these different crystalline ices. We found through cryogenic transmission electron microscopy observations that some polymorphs of ice XIh were formed by simple annealing of ice Ih at 120–150 K without any dopant or irradiation. We also investigated the formation conditions of ice Ih by vapor deposition and heating of ice Ic in protoplanetary disks. The transition kinetics from ice Ih to ice XIh suggested that ice XIh exists between the transition temperature from ice Ic to ice Ih and 150 K. From these results, we constructed a water-vapor flux–temperature–time diagram that clarifies the amorphous, Ic, Ih, XIc and XIh ice phases. We found that, under the conditions encountered in most protostars, hydrogen-ordered ices XIh and XIc can exist just outside the snow line and below 125 K, respectively. The infrared libration modes should enable these phases to be distinguished observationally. Because some of these phases are chiral, their presence could fundamentally affect the evolution of other homochiral organic molecules that develop on their surface.
• Anisotropy in spinodal-like dynamics of unknown water at ice V–water interface
  Hiromasa Niinomi; Tomoya Yamazaki; Hiroki Nada; Tetsuya Hama; Akira Kouchi; Tomoya Oshikiri; Masaru Nakagawa; Yuki Kimura
  Scientific Reports, 13, 1, Springer Science and Business Media LLC, 11 Oct. 2023, [Peer-reviewed], [Last author], [International Magazine]
  English, Scientific journal, Abstract
  
  Experimentally demonstrating the existence of waters with local structures unlike that of common water is critical for understanding both the origin of the mysterious properties of water and liquid polymorphism in single component liquids. At the interfaces between water and ices I_h, III, and VI grown/melted under pressure, we previously discovered low- and high-density unknown waters, that are immiscible with the surrounding water. Here, we show, by in-situ optical microscopy, that an unknown water appears at the ice V–water interface via spinodal-like dynamics. The dewetting dynamics of the unknown water indicate that its characteristic velocity is ~ 90 m/s. The time evolution of the characteristic length of the spinodal-like undulation suggests that the dynamics may be described by a common model for spinodal decomposition of an immiscible liquid mixture. Spinodal-like dewetting dynamics of the unknown water transiently showed anisotropy, implying the property of a liquid crystal.
• Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 Ryugu
  Toshihiro Yoshimura; Yoshinori Takano; Hiroshi Naraoka; Toshiki Koga; Daisuke Araoka; Nanako O. Ogawa; Philippe Schmitt-Kopplin; Norbert Hertkorn; Yasuhiro Oba; Jason P. Dworkin; Jose C. Aponte; Takaaki Yoshikawa; Satoru Tanaka; Naohiko Ohkouchi; Minako Hashiguchi; Hannah Mclain; Eric T. Parker; Saburo Sakai; Mihoko Yamaguchi; Takahiro Suzuki; Tetsuya Yokoyama; Hisayoshi Yurimoto; Tomoki Nakamura; Takaaki Noguchi; Ryuji Okazaki; Hikaru Yabuta; Kanako Sakamoto; Toru Yada; Masahiro Nishimura; Aiko Nakato; Akiko Miyazaki; Kasumi Yogata; Masanao Abe; Tatsuaki Okada; Tomohiro Usui; Makoto Yoshikawa; Takanao Saiki; Satoshi Tanaka; Fuyuto Terui; Satoru Nakazawa; Sei-ichiro Watanabe; Yuichi Tsuda; Shogo Tachibana; Kenji Hamase; Aogu Furusho; Kazuhiko Fukushima; Dan Aoki; Daniel P. Glavin; Hannah L. Mclain; Jamie E. Elsila; Heather V. Graham; John M. Eiler; Alexander Ruf; Francois-Regis Orthous-Daunay; Cedric Wolters; Junko Isa; Mayu Morita; Veronique Vuitton; Roland Thissen; Shin-ichiro M. Nomura; Haruna Sugahara; Hajime Mita; Yoshihiro Furukawa; Yoshito Chikaraishi; Morihiko Onose; Fumie Kabashima; Kosuke Fujishima; Hajime Sato; Kazunori Sasaki; Kuniyuki Kano; Junken Aoki; Tomoya Yamazaki; Yuki Kimura
  NATURE COMMUNICATIONS, 14, 1, Sep. 2023, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal
• Visualization of nanoscale magnetic domain states in the asteroid Ryugu
  Yuki Kimura; Takeharu Kato; Toshiaki Tanigaki; Tetsuya Akashi; Hiroto Kasai; Satoshi Anada; Ryuji Yoshida; Kazuo Yamamoto; Tomoki Nakamura; Masahiko Sato; Kana Amano; Mizuha Kikuiri; Tomoyo Morita; Eiichi Kagawa; Toru Yada; Masahiro Nishimura; Aiko Nakato; Akiko Miyazaki; Kasumi Yogata; Masanao Abe; Tatsuaki Okada; Tomohiro Usui; Makoto Yoshikawa; Takanao Saiki; Satoshi Tanaka; Fuyuto Terui; Satoru Nakazawa; Hisayoshi Yurimoto; Takaaki Noguchi; Ryuji Okazaki; Hikaru Yabuta; Hiroshi Naraoka; Kanako Sakamoto; Sei-ichiro Watanabe; Yuichi Tsuda; Shogo Tachibana
  Scientific Reports, 13, 1, Springer Science and Business Media LLC, 29 Aug. 2023, [Peer-reviewed], [Lead author, Corresponding author], [International Magazine]
  English, Scientific journal, Abstract
  
  In the samples collected from the asteroid Ryugu, magnetite displays natural remanent magnetization due to nebular magnetic field, whereas contemporaneously grown iron sulfide does not display stable remanent magnetization. To clarify this counterintuitive feature, we observed their nanoscale magnetic domain structures using electron holography and found that framboidal magnetites have an external magnetic field of 300 A m⁻¹, similar to the bulk value, and its magnetic stability was enhanced by interactions with neighboring magnetites, permitting a disk magnetic field to be recorded. Micrometer-sized pyrrhotite showed a multidomain magnetic structure that was unable to retain natural remanent magnetization over a long time due to short relaxation time of magnetic-domain-wall movement, whereas submicron-sized sulfides formed a nonmagnetic phase. These results show that both magnetite and sulfide could have formed simultaneously during the aqueous alteration in the parent body of the asteroid Ryugu.
• Observation of hydrogen-ordered cubic ice thin films on the surface of ice Ic nanocrystals upon coarsening
  Akira Kouchi; Tomoya Yamazaki; Hiroyasu Katsuno; Hiroki Nada; Tetsuya Hama; Yuki Kimura
  Chemical Physics, 572, 111966, 111966, Elsevier BV, Aug. 2023, [Peer-reviewed], [Last author], [International Magazine]
  English, Scientific journal
• Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples
  Tomoki Nakamura; Megumi Matsumoto; Kana Amano; Yuma Enokido; Michael Zolensky; Takashi Mikouchi; Hidenori Genda; Satoshi Tanaka; M. Y. Zolotov; Kosuke Kurosawa; Shigeru Wakita; Ryuki Hyodo; H. Nagano; D. Nakashima; Takahashi Yoshio; Y. Fujioka; M. Kikuiri; E. Kagawa; Moe Matsuoka; Adrian Brearley; Akira Tsuchiyama; Masayuki Uesugi; Junya Matsuno; Yuki Kimura; M. Sato; Ralph Milliken; Eri Tatsumi; Seiji Sugita; Takahiro Hiroi; Kohei Kitazato; D. Brownlee; D. J. Joswiak; M. Takahashi; Kazuhiko Ninomiya; T. Takahashi; Takahito Osawa; Kentaro Terada; Frank Erich Brenker; B. J. Tkalcec; L. Vincze; Rosario Brunetto; A. Aléon-Toppani; Queenie Hoi Shan Chan; Mathieu Roskosz; Jean-Christophe VIENNET; Pierre Beck; E. E. Alp; Tatsuhiro Michikami; Yuuya Nagaashi; Takeshi Tsuji; Y. Ino
  Science, Feb. 2023, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
  English, Scientific journal, Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2 spacecraft. We analyzed 17 Ryugu samples measuring 1 to 8 millimeters. Carbon dioxide–bearing water inclusions are present within a pyrrhotite crystal, indicating that Ryugu’s parent asteroid formed in the outer Solar System. The samples contain low abundances of materials that formed at high temperatures, such as chondrules and calcium- and aluminum-rich inclusions. The samples are rich in phyllosilicates and carbonates, which formed through aqueous alteration reactions at low temperature, high pH, and water/rock ratios of <1 (by mass). Less altered fragments contain olivine, pyroxene, amorphous silicates, calcite, and phosphide. Numerical simulations, based on the mineralogical and physical properties of the samples, indicate that Ryugu’s parent body formed ~2 million years after the beginning of Solar System formation.
• Nucleation experiments on a titanium-carbon system imply nonclassical formation of presolar grains
  Yuki Kimura; Kyoko K. Tanaka; Yuko Inatomi; Coskun Aktas; Jürgen Blum
  Science Advances, 9, 2, 13 Jan. 2023, [Peer-reviewed], [Lead author, Corresponding author], ［Internationally co-authored］, [International Magazine]
  Scientific journal
• Rock Magnetic Characterization of Returned Samples From Asteroid (162173) Ryugu: Implications for Paleomagnetic Interpretation and Paleointensity Estimation
  Masahiko Sato; Yuki Kimura; Satoshi Tanaka; Tadahiro Hatakeyama; Seiji Sugita; Tomoki Nakamuna; Shogo Tachibana; Hisayoshi Yurimoto; Takaaki Noguchi; Ryuji Okazaki; Hikaru Yabuta; Hiroshi Naraoka; Kanako Sakamoto; Toru Yada; Masahiro Nishimura; Aiko Nakato; Akiko Miyazaki; Kasumi Yogata; Masanao Abe; Tatsuaki Okada; Tomohiro Usui; Makoto Yoshikawa; Takanao Saiki; Fuyuto Terui; Satoru Nakazawa; Sei‐ichiro Watanabe; Yuichi Tsuda
  Journal of Geophysical Research: Planets, 127, 11, American Geophysical Union (AGU), Nov. 2022, [Peer-reviewed], [International Magazine]
  Scientific journal
• Low-Temperature Hydrothermal Synthesis of Chromian Spinel from Fe-Cr Hydroxides Using a Flow-Through Reactor
  Yoko Ohtomo; Jeehyun Yang; Miu Nishikata; Daisuke Kawamoto; Yuki Kimura; Tsubasa Otake; Tsutomu Sato
  Minerals, 30 Aug. 2022
  English, Scientific journal, Recent studies have suggested that a chromian spinel can be formed under natural hydrothermal conditions; however, the required conditions, process, and associated redistribution of Cr are still poorly understood. Here, chromian spinel formation was performed by Fe-Cr hydroxides alteration with an Fe2+(aq) supply at 150, 170, and 200 °C and 5 MPa simulating the diagenetic process. The flow-through system enabled the Fe2+(aq) supply to be leached from the magnetite by an acidic solution to synthesize Fe-Cr hydroxides as the starting material with two reaction cells, flow lines, heaters, and a high-performance liquid chromatography (HPLC) pump. The accuracy of the temperature measurement was confirmed based on the amorphous silica solubility. Mineralogical analysis of solid samples recovered from the reaction cell indicated that the chromian spinel was formed between 150 and 170 °C from Fe-Cr hydroxides through goethite with a simultaneous hematite formation, while Mössbauer spectra showed that a large quantity of Fe-Cr ferrihydrites still remained after the experiments probably because of the Cr addition to the stability of ferrihydrites. The Cr/Fe ratio of the chromian spinel was smaller than that of the bulk of the Fe-Cr ferrihydrites and equivalent to Cr-rich magnetite, suggesting a redistribution of Cr during the transformation from goethite to synthesized spinel under the hydrothermal conditions.
• Chiral Ice Crystals in Space
  Akira Kouchi; Takashi Shimonishi; Tomoya Yamazaki; Masashi Tsuge; Naoki Nakatani; Kenji Furuya; Hiromasa Niinomi; Yasuhiro Oba; Tetsuya Hama; Hiroyasu Katsuno; Naoki Watanabe; Yuki Kimura
  Chirality - New Insights [Working Title], IntechOpen, 22 Aug. 2022
  In book, We observed the formation of CO, CH3OH, and H2O ices using a cryogenic transmission electron microscope, to determine if chiral ice crystals could form under the conditions of interstellar molecular clouds and young stellar objects (protoplanetary disks) and to clarify the crystalline structure of these ices. Our results suggest that the following ice crystals are chiral: crystalline CO (α-CO) formed on amorphous H2O (a-H2O) grains in a 10-K molecular cloud, crystalline CH3OH formed by the heating of amorphous CH3OH on a-H2O grains at 40–60 K in young stellar objects, and several polymorphs of hydrogen-ordered cubic ice crystals formed by the heating of a-H2O at 80–100 K and direct condensation at 120–140 K in protoplanetary disks. We also investigated candidates for other chiral ices using published data. We found that NH3 I and NH3·H2O I are chiral at low temperature and pressure conditions. If one-handed circularly polarized light is irradiated during the nucleation of these chiral ice crystals, homochiral crystals can be formed. These results have important implications for the origin of interstellar organic molecule homochirality.
• Feasibility of control of particle assembly by dielectrophoresis in liquid-cell transmission electron microscopy.
  Tomoya Yamazaki; Hiromasa Niinomi; Yuki Kimura
  Microscopy (Oxford, England), 71, 4, 231, 237, 01 Aug. 2022, [International Magazine]
  English, Scientific journal, Liquid-cell transmission electron microscopy (LC-TEM) is a useful technique for observing phenomena in liquid samples with spatial and temporal resolutions similar to those of conventional transmission electron microscopy (TEM). This method is therefore expected to permit the visualization of phenomena previously inaccessible to conventional optical microscopy. However, dynamic processes such as nucleation are difficult to observe by this method because of difficulties in controlling the condition of the sample liquid in the observation area. To approach this problem, we focused on dielectrophoresis, in which electrodes are used to assemble particles, and we investigated the phenomena that occurred when an alternating-current signal was applied to an electrode in an existing liquid cell by using a phase-contrast optical microscope (PCM) and TEM. In PCM, we observed that colloidal particles in a solution were attracted to the electrodes to form assemblies, that the particles aligned along the electric field to form pearl chains and that the pearl chains accumulated to form colloidal crystals. However, these phenomena were not observed in the TEM study because of differences in the design of the relevant holders. The results of our study imply that the particle assembly by using dielectrophoretic forces in LC-TEM should be possible, but further studies, including electric device development, will be required to realize this in practice.
• Liquid-Cell Transmission Electron Microscopy Observation of Two-Step Collapse Dynamics of Silicon Nanopillars on Evaporation of Propan-2-ol: Implications for Semiconductor Integration Density
  Yuta Sasaki; Tomoya Yamazaki; Yuki Kimura
  ACS Applied Nano Materials, 22 Jul. 2022
  Scientific journal
• Possible embryos and precursors of crystalline nuclei of calcium carbonate observed by liquid-cell transmission electron microscopy.
  Yuki Kimura; Hiroyasu Katsuno; Tomoya Yamazaki
  Faraday discussions, 235, 81, 94, 14 Jul. 2022, [International Magazine]
  English, Scientific journal, Several different building blocks or precursors play an important role in the early stages of the crystallization of calcium carbonate (CaCO3). Many studies have been conducted over a long period to elucidate the fundamental processes involved in this crystallization. Here, we report the role of an amorphous phase and embryo at the beginning of the nucleation of CaCO3 from solutions of relatively low supersaturation. Prenucleation crystals formed in amorphous calcium carbonate (ACC) at a significantly large formation rate of 2 × 1022 m-3 s-1, suggesting that a low interfacial energy exists between the ACC and crystals. Only one calcite crystal exceeded the size for a critical nucleus (∼104 molecules) in 150 pre-nucleation crystals. Each pre-nucleation crystal might consist of a different polymorph, and ACCs have a similar composition and structure. A particle-detection algorithm, used in conjunction with machine learning, suggested that an embryo with a characteristic structure exists in solution and might play a crucial role in nucleation. No similar embryonic structure could be observed immediately after the dissolution of pre-nucleation particles, implying that their dissolution process is not simply the reverse process of their growth. This method should provide a new approach to understanding nucleation processes.
• Inefficient Growth of SiOx Grains: Implications for Circumstellar Outflows
  Yuki Kimura; Kyoko K. Tanaka; Yuko Inatomi; Frank T. Ferguson; Joseph A. Nuth
  ASTROPHYSICAL JOURNAL LETTERS, 934, 1, Jul. 2022
  English, Scientific journal
• Low- and High-Density Unknown Waters at Ice-Water Interfaces
  Hiromasa Niinomi; Akira Kouch; Tetsuya Hama; Hiroki Nada; Tomoya Yamazaki; Yuki Kimura
  JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 13, 19, 4251, 4256, May 2022
  English, Scientific journal
• Direct observation of the moment of nucleation from a solution by TEM
  Yuki Kimura
  Microscopy, 29 Jan. 2022
  English, Scientific journal, Abstract
  Recent discoveries of various nucleation processes make understanding the initial processes of crystallization, where atoms and molecules come together to form a crystal nucleus, difficult. Herein, transmission electron microscopy is used to directly visualize the moment of nucleation from a solution and to show that the singular phenomena of nanoparticles are critical to understanding nucleation. Our work revealed that nanoparticles undergo precipitation and dissolution even in undersaturated and equilibrium conditions, that crystal polymorphs formed at different frequencies compete, that molecules follow various nucleation pathways in the same solution, and that the hydration layer plays a critical role in crystallization. The observations visually support the common belief that dehydration is the greatest barrier to crystallization in an aqueous solution. These results are expected to contribute to the development of a unified nucleation model.
• 極低電子線観察を可能にする深層学習によるTEM画像の鮮明化—Improvement of ultra-low dose electron image of TEM by deep learning—特集 機械学習・AIは結晶成長研究をいかに変えるか?
  勝野 弘康; 木村 勇気; 山﨑 智也; 瀧川 一学
  日本結晶成長学会誌 Journal of the Japanese Association for Crystal Growth, 49, 1, 1, 8, 2022, [Peer-reviewed], [Invited]
  Japanese
• Early Detection of Nucleation Events From Solution in LC-TEM by Machine Learning.
  Hiroyasu Katsuno; Yuki Kimura; Tomoya Yamazaki; Ichigaku Takigawa
  Frontiers in chemistry, 10, 818230, 818230, 2022, [Peer-reviewed], [International Magazine]
  English, Scientific journal, To support the detection, recording, and analysis of nucleation events during in situ observations, we developed an early detection system for nucleation events observed using a liquid-cell transmission electron microscope. Detectability was achieved using the machine learning equivalent of detection by humans watching a video numerous times. The detection system was applied to the nucleation of sodium chloride crystals from a saturated acetone solution of sodium chlorate. Nanoparticles with a radius of more greater than 150 nm were detected in a viewing area of 12 μm × 12 μm by the detection system. The analysis of the change in the size of the growing particles as a function of time suggested that the crystal phase of the particles with a radius smaller than 400 nm differed from that of the crystals larger than 400 nm. Moreover, the use of machine learning enabled the detection of numerous nanometer sized nuclei. The nucleation rate estimated from the machine-learning-based detection was of the same order as that estimated from the detection using manual procedures.
• Improvement of ultra-low dose electron image of TEM by deep learning
  Katsuno Hiroyasu; Kimura Yuki; Yamazaki Tomoya; Takigawa Ichigaku
  Journal of the Japanese Association for Crystal Growth, 49, 1, n/a, The Japanese Association for Crystal Growth, 2022
  Japanese
• 液中における核生成過程の透過型電子顕微鏡その場観察
  勇気 木村
  顕微鏡, 30 Dec. 2021
  Japanese, Scientific journal
• UV-Induced Formation of Ice XI Observed Using an Ultra-High Vacuum Cryogenic Transmission Electron Microscope and its Implications for Planetary Science
  Akira Kouchi; Yuki Kimura; Kensei Kitajima; Hiroyasu Katsuno; Hiroshi Hidaka; Yasuhiro Oba; Masashi Tsuge; Tomoya Yamazaki; Kazuyuki Fujita; Tetsuya Hama; Yukihiro Takahashi; Shunichi Nakatsubo; Naoki Watanabe
  Frontiers in Chemistry, 9, Frontiers Media SA, 08 Dec. 2021
  Scientific journal, The occurrence of hydrogen atom-ordered form of ice Ih, ice XI, in the outer Solar System has been discussed based on laboratory experiments because its ferroelectricity influences the physical processes in the outer Solar System. However, the formation of ice XI in that region is still unknown due to a lack of formation conditions at temperatures higher than 72 K and the effect of UV-rays on the phase transition from ice I to ice XI. As a result, we observed the UV-irradiation process on ice Ih and ice Ic using a newly developed ultra-high vacuum cryogenic transmission electron microscope. We found that ice Ih transformed to ice XI at temperatures between 75 and 140 K with a relatively small UV dose. Although ice Ic partially transformed to ice XI at 83 K, the rate of transformation was slower than for ice Ih. These findings point to the formation of ice XI at temperatures greater than 72 K via UV irradiation of ice I crystals in the Solar System; icy grains and the surfaces of icy satellites in the Jovian and Saturnian regions.
• Formation of ice particles through nucleation in the mesosphere
  Kyoko Tanaka; Ingrid Mann; Yuki Kimura
  Atmospheric Chemistry and Physics, 14 Oct. 2021
  Scientific journal, Abstract. Observations of polar mesospheric clouds have revealed the presence of solid ice particles in the upper mesosphere at high latitudes; however, their formation mechanism remains uncertain. In this study, we investigated the formation process of ice particles through nucleation from small amounts of water vapor at low temperatures. Previous studies that used classical nucleation theory have shown that amorphous solid water particles can nucleate homogeneously at conditions that are present in the mesosphere. However, the rate predictions for water in classical nucleation theory disagree with experimental measurements by several orders of magnitude. We adopted a semi-phenomenological model for the nucleation process, which corrects the evaluation of the molecular cluster formation energy using the second virial coefficient, which agrees with both experiments and molecular dynamics simulations. To calculate the nucleation process, we applied atmospheric conditions for the temperature, pressure, numerical density of dust grains, and cooling rate. The results indicate that homogeneous water nucleation is extremely unlikely to occur in the mesosphere, while heterogeneous nucleation occurs effectively. Dust grains generated by meteor ablation can serve as nuclei for heterogeneous nucleation. We also showed that the ice can form directly in a crystalline state, rather than an amorphous state.
  
• Transmission Electron Microscopy Study of the Morphology of Ices Composed of H2O, CO2, and CO on Refractory Grains
  Akira Kouchi; Masashi Tsuge; Tetsuya Hama; Yasuhiro Oba; Satoshi Okuzumi; Sin-iti Sirono; Munetake Momose; Naoki Nakatani; Kenji Furuya; Takashi Shimonishi; Tomoya Yamazaki; Hiroshi Hidaka; Yuki Kimura; Ken-ichiro Murata; Kazuyuki Fujita; Shunichi Nakatsubo; Shogo Tachibana; Naoki Watanabe
  The Astrophysical Journal, 918, 2, 45, 45, American Astronomical Society, 01 Sep. 2021, [Peer-reviewed]
  Scientific journal
• On the Nature of Organic Dust in Novae
  Izumi Endo; Itsuki Sakon; Takashi Onaka; Yuki Kimura; Seiji Kimura; Setsuko Wada; L. Andrew Helton; Ryan M. Lau; Yoko Kebukawa; Yasuji Muramatsu; Nanako O. Ogawa; Naohiko Ohkouchi; Masato Nakamura; Sun Kwok
  The Astrophysical Journal, 917, 2, 103, 103, American Astronomical Society, 01 Aug. 2021, [Peer-reviewed]
  Scientific journal
• Electron Holography Details the Tagish Lake Parent Body and Implies Early Planetary Dynamics of the Solar System
  Yuki Kimura; Kazuo Yamamoto; Shigeru Wakita
  The Astrophysical Journal Letters, 917, 1, L5, L5, American Astronomical Society, 01 Aug. 2021, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Formation of chiral CO polyhedral crystals on icy interstellar grains
  Akira Kouchi; Masashi Tsuge; Tetsuya Hama; Hiromasa Niinomi; Naoki Nakatani; Takashi Shimonishi; Yasuhiro Oba; Yuki Kimura; Sin-iti Sirono; Satoshi Okuzumi; Munetake Momose; Kenji Furuya; Naoki Watanabe
  Monthly Notices of the Royal Astronomical Society, 505, 1, 1530, 1542, Oxford University Press (OUP), 03 Jun. 2021, [Peer-reviewed]
  Scientific journal,
  The crystallinity and morphology of solid carbon monoxide (CO) on icy interstellar grains were examined by observing the deposition, crystallization, and UV and electrons irradiation of solid CO using transmission electron microscopy. Herein, we found that solid CO deposited in molecular clouds was crystalline, and that even if amorphous CO was deposited, amorphous CO crystallized within 103 yr at 10 K. Conversely, crystalline CO was not amorphized by UV rays or electron beam at 10 K. These results indicated the occurrence of chiral crystalline CO instead of amorphous CO in space. Furthermore, the large surface diffusion coefficients of CO on eamorphous H2O and crystalline CO at 10 K facilitated the morphological equilibration of crystalline CO. Bad wetting of crystalline CO with amorphous H2O proved that the morphology of the ice grains was not spherical with an onion-like structure, as hitherto assumed, but rather it was a polyhedral crystalline CO attached to amorphous H2O. This has important implications for phenomena associated with the collision and subsequent sticking between ice grains, surface chemical reactions, non-thermal desorption of molecules and the origin of homochirality in interstellar biomolecules.
• Radiolysis-Induced Crystallization of Sodium Chloride in Acetone by Electron Beam Irradiation
  Tomoya Yamazaki; Yuki Kimura
  Microscopy and Microanalysis, 27, 3, 459, 465, Jun. 2021, [Peer-reviewed], [Last author, Corresponding author]
  English, Scientific journal
• Fast improvement of TEM image with low-dose electrons by deep learning.
  Hiroyasu Katsuno; Yuki Kimura; Tomoya Yamazaki; Ichigaku Takigawa
  CoRR, abs/2106.01718, 2021
  Scientific journal
• In-situ water-immersion experiments on amorphous silicates in the MgO–SiO2 system: implications for the onset of aqueous alteration in primitive meteorites
  Yohei Igami; Akira Tsuchiyama; Tomoya Yamazaki; Megumi Matsumoto; Yuki Kimura
  Geochimica et Cosmochimica Acta, 293, 86, 102, Elsevier BV, Jan. 2021, [Peer-reviewed]
  Scientific journal
• Precometary organic matter: A hidden reservoir of water inside the snow line
  Hideyuki Nakano; Naoki Hirakawa; Yasuhiro Matsubara; Shigeru Yamashita; Takuo Okuchi; Kenta Asahina; Ryo Tanaka; Noriyuki Suzuki; Hiroshi Naraoka; Yoshinori Takano; Shogo Tachibana; Tetsyua Hama; Yasuhiro Oba; Yuki Kimura; Naoki Watanabe; Akira Kouchi
  Scientific Reports, 10, 7755, Dec. 2020, [Peer-reviewed]
  English, Scientific journal
• High-Density Liquid Water at a Water–Ice Interface
  Hiromasa Niinomi; Tomoya Yamazaki; Hiroki Nada; Tetsuya Hama; Akira Kouchi; Junpei T. Okada; Jun Nozawa; Satoshi Uda; Yuki Kimura
  The Journal of Physical Chemistry Letters, 11, 16, 6779, 6784, American Chemical Society (ACS), 20 Aug. 2020, [Peer-reviewed], [Last author, Corresponding author]
  Scientific journal
• Time-Resolved Observation of Evolution of Amyloid-β Oligomer with Temporary Salt Crystals.
  Kichitaro Nakajima; Tomoya Yamazaki; Yuki Kimura; Masatomo So; Yuji Goto; Hirotsugu Ogi
  The journal of physical chemistry letters, 11, 15, 6176, 6184, 06 Aug. 2020, [Peer-reviewed], [International Magazine]
  English, Scientific journal, The aggregation behavior of amyloid-β (Aβ) peptides remains unclarified despite the fact that it is closely related to the pathogenic mechanism of Alzheimer's disease. Aβ peptides form diverse oligomers with various diameters before nucleation, making clarification of the mechanism involved a complex problem with conventional macroscopic analysis methods. Time-resolved single-molecule level analysis in bulk solution is thus required to fully understand their early stage aggregation behavior. Here, we perform time-resolved observation of the aggregation dynamics of Aβ oligomers in bulk solution using liquid-state transmission electron microscopy. Our observations reveal previously unknown behaviors. The most important discovery is that a salt crystal can precipitate even with a concentration much lower than its solubility, and it then dissolves in a short time, during which the aggregation reaction of Aβ peptides is significantly accelerated. These findings will provide new insights in the evolution of the Aβ oligomer.
• Formation experiments of organic molecules by catalytic reactions in low-temperature and low-pressure environments
  Yuki Kimura; Rikako Sato; AkiraTsuchiyama; YusukeTamenori; Tetsuya Hama; Hiroshi Hidaka; Naoki Watanabe; Akira Kouchi; Hiroko Nagahara
  Low Temperature Science, 78, 79, 90, Mar. 2020, [Peer-reviewed]
• High mobility of lattice molecules and defects during the early stage of protein crystallization
  Tomoya Yamazaki; Alexander E. S. Van Driessche; Yuki Kimura
  Soft Matter, 16, 8, 1955, 1960, Royal Society of Chemistry ({RSC}), 2020, [Peer-reviewed], [Last author, Corresponding author]
  Scientific journal,

  Dynamic behavior of defects in lysozyme protein crystals reveals that the lattice molecules are mobile throughout the crystal.

• Exposure Experiments of Amorphous Silicates and Organics to Cometary Ice and Vapor Analogs
  Aki Takigawa; Yoshihiro Furukawa; Yuki Kimura; Bjorn Davidsson; Tomoki Nakamura
  ASTROPHYSICAL JOURNAL, 881, 1, 27, Aug. 2019, [Peer-reviewed]
  English, Scientific journal
• Interactions of Atomic and Molecular Hydrogen with a Diamond-like Carbon Surface: H2 Formation and Desorption
  Masashi Tsuge; Tetsuya Hama; Yuki Kimura; Akira Kouchi; Naoki Watanabe
  The Astrophysical Journal, 878, 1, 23, Jun. 2019, [Peer-reviewed]
  English, Scientific journal
• Theoretical analysis of crystallization by homogeneous nucleation of water droplets
  Kyoko K. Tanaka; Yuki Kimura
  Physical Chemistry Chemical Physics, 21, 2410, 2418, Royal Society of Chemistry ({RSC}), Jan. 2019, [Peer-reviewed]
  English, Scientific journal
• Space Exposure Experiment of Carbonaceous Dust
  I. Sakon; I. Endo; A. Ikeuchi; T. Onaka; Y. Kimura; S. Kimura; S. Wada; M. Nakamura; J. Ichimura; N. Ogawa; N. Ohkouchi; Y. Inatomi
  Aeronautical and Space Sciences Japan, 66, 12, 381, 387, THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, Dec. 2018, [Peer-reviewed]
  Japanese, Scientific journal,

  国際宇宙ステーション「きぼう」利用簡易曝露実験装置ExHAMを利用した炭素質ダストの宇宙曝露実験は，年老いた星周環境で凝縮したダストが星間空間に至り次世代の星形成活動に寄与するまでの過程で被る物性変化を調べることを目的とする試みである．本実験では，未同定赤外バンド担い手の同定に焦点をあて，実験室で合成するダストである膜状急冷炭素質物質をはじめとして，約30種の実験試料を1年間，国際宇宙ステーションの軌道環境に曝露し，曝露前後の物質の赤外分光特性や物性変化の調査を実施している．この記事では，本曝露実験の概要と進捗状況を示すとともに，主要な実験試料の1つである膜状急冷炭素質物質に焦点をあて，宇宙環境曝露実験前後での赤外線吸光スペクトルの変化に関する初期成果の一部を紹介する．

• Immiscibility of Nucleating Aluminum Oxide Nanoparticles in Vapor
  Shinnosuke Ishizuka; Yuki Kimura; Jun Kawano; Rafael Escribano; Tomoya Yamazaki; Tetsuya Hama; Rikako Sato
  The Journal of Physical Chemistry C, 122, 43, 25092, 25101, American Chemical Society ({ACS}), 01 Nov. 2018, [Peer-reviewed], [Corresponding author]
  English, Scientific journal
• Sounding-rocket microgravity experiments on alumina dust
  Shinnosuke Ishizuka; Yuki Kimura; Itsuki Sakon; Hiroshi Kimura; Tomoya Yamazaki; Shinsuke Takeuchi; Yuko Inatomi
  Nature Communications, 9, 1, 3820, 3820, Sep. 2018, [Peer-reviewed], [Corresponding author], [International Magazine]
  English, Scientific journal, Alumina (Al2O3) is believed to be the first major condensate to form in the gas outflow from oxygen-rich evolved stars because of the refractoriness and that α-Al2O3 (corundum, most stable polymorph) is a potential origin of a 13 μm feature that appears close to stars. However, no one has directly reproduced the 13 μm feature experimentally, and it has remained as a noteworthy unidentified infrared band. Here, we report nucleation experiments on Al2O3 nanoparticles monitored by a specially designed infrared spectrometer in the microgravity environment of a sounding rocket. The conditions approximate to those around asymptotic giant branch (AGB) stars. The measured spectra of the nucleated Al2O3 show a sharp feature at a wavelength of 13.55 μm and comparable in width to that observed near oxygen-rich AGB stars. Our finding that α-Al2O3 nucleates under certain condition provides a solid basis to elaborate condensation models of dust around oxygen-rich evolved stars.
• Nucleation Processes of Cosmic Dust Investigated by Microgravity Experiments using an Airplane
  Yuki Kimura; Shinnosuke Ishizuka; Sašo Šturm; Kyoko K. Tanaka; Tomoya Yamazaki; Fumiaki Saito; Yosuke Satoh; Katsuo Tsukamoto; Yuko Inatomi
  International Journal of Microgravity Science and Application, 35, 3, 350305, Jul. 2018, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Measurements of the Activation Energies for Atomic Hydrogen Diffusion on Pure Solid CO
  Y. Kimura; M. Tsuge; V. Pirronello; A. Kouchi; N. Watanabe
  Astrophysical Journal Letters, 858, 2, 23, Institute of Physics Publishing, 10 May 2018, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Direct Transmission Electron Microscopy Visualization of the Cement Reaction by Colloidal Aggregation of Fumed Silica
  Hisao Satoh; Yuki Kimura; Erika Furukawa
  Industrial and Engineering Chemistry Research, 57, 1, 79, 83, American Chemical Society, 10 Jan. 2018, [Peer-reviewed], [Corresponding author]
  English, Scientific journal
• Development of an ultrahigh vacuum low temperature transmission electron microscope for in-situ observation of ices
  Akira KOUCHI; Hiroshi HIDAKA; Naoki WATANABE; Tetsuya HAMA; Yuki KIMURA; Shunichi NAKATSUBO; Kazuyuki FUJITA; Kunio SINBORI; Masayuki IKEDA
  日本雪氷学会誌 雪氷, 80, 1, 19, 36, Jan. 2018, [Peer-reviewed]
  Japanese, Scientific journal
• Experiments on Condensation of Calcium Sulfide Grains To Demarcate Environments for the Formation of Enstatite Chondrites
  Kaori Yokoyama; Yuki Kimura; Chihiro Kaito
  ACS EARTH AND SPACE CHEMISTRY, 1, 10, 601, 607, Dec. 2017, [Peer-reviewed], [Corresponding author]
  English, Scientific journal
• Liquid-like behavior of UV-irradiated interstellar ice analog at low temperatures.
  Shogo Tachibana; Akira Kouchi; Tetsuya Hama; Yasuhiro Oba; Laurette Piani; Iyo Sugawara; Yukiko Endo; Hiroshi Hidaka; Yuki Kimura; Ken-Ichiro Murata; Hisayoshi Yurimoto; Naoki Watanabe
  Science advances, 3, 9, eaao2538, Sep. 2017, [Peer-reviewed], [International Magazine]
  English, Scientific journal, Interstellar ice is believed to be a cradle of complex organic compounds, commonly found within icy comets and interstellar clouds, in association with ultraviolet (UV) irradiation and subsequent warming. We found that UV-irradiated amorphous ices composed of H2O, CH3OH, and NH3 and of pure H2O behave like liquids over the temperature ranges of 65 to 150 kelvin and 50 to 140 kelvin, respectively. This low-viscosity liquid-like ice may enhance the formation of organic compounds including prebiotic molecules and the accretion of icy dust to form icy planetesimals under certain interstellar conditions.
• Self-assembly of MoO3 needles in gas current for cubic formation pathway
  Shinnosuke Ishizuka; Yuki Kimura; Satoki Yokoi; Tomoya Yamazaki; Rikako Sato; Tetsuya Hama
  NANOSCALE, 9, 28, 10109, 10116, Jul. 2017, [Peer-reviewed]
  English, Scientific journal
• Fast crystalline ice formation at extremely low temperature through water/neon matrix sublimation
  Tetsuya Hama; Shinnosuke Ishizuka; Tomoya Yamazaki; Yuki Kimura; Akira Kouchi; Naoki Watanabe; Toshiki Sugimoto; Valerio Pirronello
  PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 19, 27, 17677, 17684, Jul. 2017, [Peer-reviewed]
  English, Scientific journal
• Simulations and spectra of water in CO matrices
  Rafael Escribano; Emilio Artacho; Akira Kouchi; Tetusya Hama; Yuki Kimura; Hiroshi Hidaka; Naoki Watanabe
  PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 19, 10, 7280, 7287, Mar. 2017, [Peer-reviewed]
  English, Scientific journal
• Simulations and spectra of water in CO matrices
  Rafael Escribano; Emilio Artacho; Akira Kouchi; Tetusya Hama; Yuki Kimura; Hiroshi Hidaka; Naoki Watanabe
  PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 19, 10, 7280, 7287, Mar. 2017, [Peer-reviewed]
  English, Scientific journal
• Evolution of Morphological and Physical Properties of Laboratory Interstellar Organic Residues with Ultraviolet Irradiation
  L. Piani; S. Tachibana; T. Hama; H. Tanaka; Y. Endo; I. Sugawara; L. Dessimoulie; Y. Kimura; A. Miyake; J. Matsuno; A. Tsuchiyama; K. Fujita; S. Nakatsubo; H. Fukushi; S. Mori; T. Chigai; H. Yurimoto; A. Kouchi
  ASTROPHYSICAL JOURNAL, 837, 1, 35, Mar. 2017, [Peer-reviewed]
  English, Scientific journal
• Two types of amorphous protein particles facilitate crystal nucleation
  Tomoya Yamazaki; Yuki Kimura; Peter G. Vekilov; Erika Furukawa; Manabu Shirai; Hiroaki Matsumoto; Alexander E. S. Van Driessche; Katsuo Tsukamoto
  PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 114, 9, 2154, 2159, Feb. 2017, [Peer-reviewed]
  English, Scientific journal
• Two types of amorphous protein particles facilitate crystal nucleation
  Tomoya Yamazaki; Yuki Kimura; Peter G. Vekilov; Erika Furukawa; Manabu Shirai; Hiroaki Matsumoto; Alexander E. S. Van Driessche; Katsuo Tsukamoto
  PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 114, 9, 2154, 2159, Feb. 2017, [Peer-reviewed]
  English, Scientific journal
• In-situ observations of nucleation processes in an ionic liquid as a solvent using TEM
  Kimura Yuki
  Journal of the Japanese Association for Crystal Growth, 44, 1, 11, 16, The Japanese Association for Crystal Growth, 2017
  Japanese,

    We believe that elucidation of the role of hydrated layer on the surface of crystals and growth units, and incorporation of significances of nanoscale materials are the keys to understand nucleation processes. We are trying to observe at the moments of nucleation in nanoscale using advanced transmission electron microscopies (TEM) for long years. Here, we report results of nucleation of sodium chlorate as an example from an ionic liquid instead of water as a solvent. Ionic liquid has negligible vapor pressure and is not charged up by electron-beam irradiation due to its relatively higher electrical conductivity and, therefore, has a great potential to study crystallization using TEM. Nevertheless, observation of nucleation processes is still very difficult even used ionic liquids. To overcome the difficulties, the nucleation processes have been expected from the results of the opposite process, i.e., by observation of dissolution processes. We successfully found the concurrent formation of two polymorphic crystals without the contribution of an amorphous intermediate stages at the equilibrium concentration.

• Microscopic observations of chromian spinel synthesized in a low temperature hydrothermal environment
  Nishikata Miu; Ohtomo Yoko; Otake Tsubasa; Kimura Yuki; Kawamoto Daisuke; Sato Tsutomu
  Abstracts of Annual Meeting of the Geochemical Society of Japan, 64, 310, 310, GEOCHEMICAL SOCIETY OF JAPAN, 2017
  Japanese,

• Nucleation experiments of alumina nanoparticles in vapor phase under microgravity environment
  Kimura Yuki; Ishizuka Shinnosuke; Tanaka Kyoko K; Takeuchi Shinsuke; Inatomi Yuko
  Meeting Abstracts of the Physical Society of Japan, 72, 0, 2571, 2571, The Physical Society of Japan, 2017
  Japanese,

  観測ロケットおよび航空機で得られる微小重力環境を利用し、ガス中蒸発法によりアルミナナノ粒子を作製した。干渉計や赤外分光光度計で、過飽和ガスからアルミナのナノ粒子が生成する過程をその場観察した結果について報告する。

• Evolution analysis of V2O5.nH(2)O gels for preparation of xerogels having a high specific surface area and their replicas
  Kanji Ishii; Yuki Kimura; Tomoya Yamazaki; Yuya Oaki; Hiroaki Imai
  RSC ADVANCES, 7, 57, 35711, 35716, 2017, [Peer-reviewed]
  English, Scientific journal
• Pure iron grains are rare in the universe
  Yuki Kimura; Kyoko K. Tanaka; Takaya Nozawa; Shinsuke Takeuchi; Yuko Inatomi
  SCIENCE ADVANCES, 3, 1, e1601992, Jan. 2017, [Peer-reviewed]
  English, Scientific journal
• Two-Step Process in Homogeneous Nucleation of Alumina in Supersaturated Vapor
  Shinnosuke Ishizuka; Yuki Kimura; Tomoya Yamazaki; Tetsuya Hama; Naoki Watanabe; Akira Kouchi
  CHEMISTRY OF MATERIALS, 28, 23, 8732, 8741, Dec. 2016, [Peer-reviewed]
  English, Scientific journal
• In situ FT-IR study on the homogeneous nucleation of nanoparticles of titanium oxides from highly supersaturated vapor
  Shinnosuke Ishizuka; Yuki Kimura; Tomoya Yamazaki
  JOURNAL OF CRYSTAL GROWTH, 450, 168, 173, Sep. 2016, [Peer-reviewed]
  English, Scientific journal
• Matrix sublimation method for the formation of high-density amorphous ice
  A. Kouchi; T. Hama; Y. Kimura; H. Hidaka; R. Escribano; N. Watanabe
  CHEMICAL PHYSICS LETTERS, 658, 287, 292, Aug. 2016, [Peer-reviewed]
  English, Scientific journal
• Carbon and silicate dust formation in V1280 Sco
  I Sakon; S Sako; T Oanaka; T Nozawa; Y Kimura; T Fujiyoshi; T Shimonishi; F Usui; H Takahashi; R Ohsawa; A Arai; M Uemura; T Nagayama; B-C Koo; T Kozasa
  Journal of Physics: Conference Series, 728, 062006, {IOP} Publishing, Jul. 2016, [Peer-reviewed]
• Assembling interferometers and in-situ observation of ambient environments and solid-liquid interfaces
  Yuki Kimura; Kenta Murayama; Tomoya Yamazaki; Takao Maki
  PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS, 62, 2, 400, 403, Jun. 2016, [Peer-reviewed]
  English, Scientific journal
• Development of compartment for studies on the growth of protein crystals in space
  T. Yamazaki; K. Tsukamoto; I. Yoshizaki; S. Fukuyama; H. Miura; T. Shimaoka; T. Maki; K. Oshi; Y. Kimura
  REVIEW OF SCIENTIFIC INSTRUMENTS, 87, 3, 033107, Mar. 2016, [Peer-reviewed]
  English, Scientific journal
• CONCURRENT FORMATION OF CARBON AND SILICATE DUST IN NOVA V1280 SCO
  Itsuki Sakon; Shigeyuki Sako; Takashi Onaka; Takaya Nozawa; Yuki Kimura; Takuya Fujiyoshi; Takashi Shimonishi; Fumihiko Usui; Hidenori Takahashi; Ryou Ohsawa; Akira Arai; Makoto Uemura; Takahiro Nagayama; Bon-Chul Koo; Takashi Kozasa
  ASTROPHYSICAL JOURNAL, 817, 2, 145, Feb. 2016, [Peer-reviewed]
  English, Scientific journal
• 21aBE-7 In-situ observation of nucleation in a solution by transmission electron microscopes
  Kimura Yuki
  Meeting Abstracts of the Physical Society of Japan, 71, 2609, 2610, The Physical Society of Japan (JPS), 2016
  Japanese
• 1D oriented attachment of calcite nanocrystals: formation of single-crystalline rods through collision
  Mihiro Takasaki; Yuki Kimura; Tomoya Yamazaki; Yuya Oaki; Hiroaki Imai
  RSC ADVANCES, 6, 66, 61346, 61350, 2016, [Peer-reviewed]
  English, Scientific journal
• Transmission Electron Microscopy of Crystallization of Lysozyme in a Solution
  Tomoya Yamazaki; Manabu Shirai; Hiroaki Matsumoto; Yuki Kimura
  Microscopy and Microanalysis, 21, S3, 255, 256, Cambridge University Press ({CUP}), Aug. 2015
  International conference proceedings
• Pulse-laser irradiation experiments of Murchison CM2 chondrite for reproducing space weathering on C-type asteroids
  Moe Matsuoka; Tomoki Nakamura; Yuki Kimura; Takahiro Hiroi; Ryosuke Nakamura; Satoshi Okumura; Sho Sasaki
  ICARUS, 254, 135, 143, Jul. 2015, [Peer-reviewed]
  English, Scientific journal
• Nanodiamond Finding in the Hyblean Shallow Mantle Xenoliths
  S. K. Simakov; A. Kouchi; N. N. Mel'nik; V. Scribano; Y. Kimura; T. Hama; N. Suzuki; H. Saito; T. Yoshizawa
  SCIENTIFIC REPORTS, 5, 10765, Jun. 2015, [Peer-reviewed]
  English, Scientific journal
• IN SITU INFRARED MEASUREMENTS OF FREE-FLYING SILICATE DURING CONDENSATION IN THE LABORATORY
  Shinnosuke Ishizuka; Yuki Kimura; Itsuki Sakon
  ASTROPHYSICAL JOURNAL, 803, 2, 88, Apr. 2015, [Peer-reviewed]
  English, Scientific journal
• Initial processes of crystallization in mesoscopic region
  Yuki Kimura; Shinnosuke Ishizuka; Kyoko Tanaka; Itsuki Sakon; Shinsuke Takeuchi; Yuko Inatomi
  Space Utilization Research, 29, 29, 100, 102, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS), 2015
  Japanese, Space Utilization Research (January 24-25, 2015. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan
• Dissolution behavior of vaterite spherulite in solutions containing phosphate ions
  Yuki Sugiura; Kazuo Onuma; Masahiro Nagao; Koichi Momma; Yuki Kimura; Atsushi Yamazaki
  JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 122, 1428, 679, 687, Aug. 2014, [Peer-reviewed]
  English, Scientific journal
• Emergence and Amplification of Chirality via Achiral-Chiral Polymorphic Transformation in Sodium Chlorate Solution Growth
  Hiromasa Niinomi; Hitoshi Miura; Yuki Kimura; Makio Uwaha; Hiroyasu Katsuno; Shunta Harada; Toru Ujihara; Katsuo Tsukamoto
  CRYSTAL GROWTH & DESIGN, 14, 7, 3596, 3602, Jul. 2014, [Peer-reviewed]
  English, Scientific journal
• Measurement of two-dimensional distribution of surface supersaturation over a sodium chlorate crystal surface using multidirectional interferometry
  Kenta Murayama; Katsuo Tsukamoto; Atul Srivastava; Hitoshi Miura; Etsuro Yokoyama; Yuki Kimura
  CRYSTAL RESEARCH AND TECHNOLOGY, 49, 5, 315, 322, May 2014, [Peer-reviewed]
  English, Scientific journal
• Solubility measurement of a metastable achiral crystal of sodium chlorate in solution growth
  Hiromasa Niinomi; Atsushi Horio; Shunta Harada; Toru Ujihara; Hitoshi Miura; Yuki Kimura; Katsuo Tsukamoto
  JOURNAL OF CRYSTAL GROWTH, 394, 106, 111, May 2014, [Peer-reviewed]
  English, Scientific journal
• In Situ Live Observation of Nucleation and Dissolution of Sodium Chlorate Nanoparticles by Transmission Electron Microscopy
  Yuki Kimura; Hiromasa Niinomi; Katsuo Tsukamoto; Juan M. Garcia-Ruiz
  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 136, 5, 1762, 1765, Feb. 2014, [Peer-reviewed]
  English, Scientific journal
• In Situ Live Observation of Nucleation and Dissolution of Sodium Chlorate Nanoparticles by Transmission Electron Microscopy
  Yuki Kimura; Hiromasa Niinomi; Katsuo Tsukamoto; Juan M. Garcia-Ruiz
  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 136, 5, 1762, 1765, Feb. 2014
  English, Scientific journal
• Nucleation Experiment of Cosmic Dust under Microgravity using a Sounding Rocket S-520-28
  Yuki Kimura
  Int. J. Microgravity Sci. Appl., 31, 3, 130, 136, The Japan Society of Microgravity Application, 2014, [Peer-reviewed]
  Japanese, We performed microgravity experiments of homogeneous nucleation of iron from the vapor phase using the sounding rocket S-520-28 on December 17, 2012. The purpose is determination of a sticking probability of iron during the nucleation from the supersaturated vapor, because the sticking probability is one of the most uncertain physical quantities to understand the formation process of cosmic dust based on nucleation theories. We prepared the specially designed MachZehnder-type interferometers with an evaporation chamber and camera recording systems to fit the space and weight limitations of the rocket. Three same systems, named DUST 1 to 3, were installed into the rocket. Iron was evaporated in an argon gas and then it was cooled and nucleated to form nanoparticles. The temperature and concentration of iron vapor at the nucleation site are determined from the movement of the interference fringe. Here, we present the brief summary of the experiments and the preliminary results of the homogeneous nucleation from iron vapor under microgravity.
• S-520 Sounding Rocket Experiments of Materials Science under Microgravity
  Y. Inatomi; Y. Kimura; K. Tsukamoto; Y. Takagi; S. Takeuchi; N. Ishii
  Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 12, Th_31, Th_34, 2014, [Peer-reviewed]
• Achiral Metastable Crystals of Sodium Chlorate Forming Prior to Chiral Crystals in Solution Growth
  Hiromasa Niinomi; Tomoya Yamazaki; Shunta Harada; Toru Ujihara; Hitoshi Miura; Yuki Kimura; Takahiro Kuribayashi; Makio Uwaha; Katsuo Tsukamoto
  CRYSTAL GROWTH & DESIGN, 13, 12, 5188, 5192, Dec. 2013, [Peer-reviewed]
  English, Scientific journal
• Cathodoluminescence microscopy and spectroscopy of forsterite from Kaba meteorite: An application to the study of hydrothermal alteration of parent body
  Arnold Gucsik; Taro Endo; Hirotsugu Nishido; Kiyotaka Ninagawa; Masahiro Kayama; Szaniszlo Berczi; Szabolcs Nagy; Peter Abraham; Yuki Kimura; Hitoshi Miura; Ildiko Gyollai; Irakli Simonia; Peter Rozsa; Jozsef Posta; Daniel Apai; Krisztian Mihalyi; Mihaly Nagy; Ulrich Ott
  METEORITICS & PLANETARY SCIENCE, 48, 12, 2577, 2596, Dec. 2013, [Peer-reviewed]
  English, Scientific journal
• Vortex magnetic structure in framboidal magnetite reveals existence of water droplets in an ancient asteroid
  Yuki Kimura; Takeshi Sato; Norihiro Nakamura; Jun Nozawa; Tomoki Nakamura; Katsuo Tsukamoto; Kazuo Yamamoto
  Nature Communications, 4, 2649, Nature Publishing Group, 22 Oct. 2013, [Peer-reviewed]
  English, Scientific journal
• MET00432: Another Tagish Lake-type Carbonaceous Chondrite from Antarctica.
  T. Nakamura; T. Noguchi; Y. Kimura; T. Hiroi; I. Ahn; J. I. Lee; S. Sasaki
  METEORITICS & PLANETARY SCIENCE, 48, A258, A258, Jul. 2013, [Peer-reviewed]
  English
• Acceleration and inhibition effects of phosphate on phase transformation of amorphous calcium carbonate into vaterite
  Yuki Sugiura; Kazuo Onuma; Yuki Kimura; Katsuo Tsukamoto; Atsushi Yamazaki
  AMERICAN MINERALOGIST, 98, 1, 262, 270, Jan. 2013
  English, Scientific journal
• Acceleration and inhibition effects of phosphate on phase transformation of amorphous calcium carbonate into vaterite
  Yuki Sugiura; Kazuo Onuma; Yuki Kimura; Katsuo Tsukamoto; Atsushi Yamazaki
  AMERICAN MINERALOGIST, 98, 1, 262, 270, Jan. 2013
  English, Scientific journal
• THE MECHANISM OF SURFACE DIFFUSION OF H AND D ATOMS ON AMORPHOUS SOLID WATER: EXISTENCE OF VARIOUS POTENTIAL SITES
  Tetsuya Hama; Kazuaki Kuwahata; Naoki Watanabe; Akira Kouchi; Yuki Kimura; Takeshi Chigai; Valerio Pirronello
  ASTROPHYSICAL JOURNAL, 757, 2, 185, 196, Oct. 2012
  English, Scientific journal
• THE MECHANISM OF SURFACE DIFFUSION OF H AND D ATOMS ON AMORPHOUS SOLID WATER: EXISTENCE OF VARIOUS POTENTIAL SITES
  HAMA TETSUYA; KUWAHATA KAZUAKI; WATANABE NAOKI; KOUCHI AKIRA; KIMURA YUKI; CHIGAI TAKESHI; PIRRONELLO VALERIO
  Astrophys J, 757, 2,Pt.1, 185,1-185,12, 01 Oct. 2012
  English
• THE MECHANISM OF SURFACE DIFFUSION OF H AND D ATOMS ON AMORPHOUS SOLID WATER: EXISTENCE OF VARIOUS POTENTIAL SITES
  Tetsuya Hama; Kazuaki Kuwahata; Naoki Watanabe; Akira Kouchi; Yuki Kimura; Takeshi Chigai; Valerio Pirronello
  ASTROPHYSICAL JOURNAL, 757, 2, Oct. 2012, [Peer-reviewed]
  English, Scientific journal
• In-situ Observation of Cosmic Dust Formation toward Microgravity Experiment
  KIMURA YUKI; INATOMI YUKO; TANAKA KYOKO; MAKI TAKAO; MIURA HITOSHI; SAKON ITSUKI; NOZAWA TAKAYA; TSUKAMOTO KATSUO
  日本結晶成長学会誌, 39, 2, 68, 74, Jul. 2012
  Japanese
• Direct Observation of the Homogeneous Nucleation of Manganese in the Vapor Phase and Determination of Surface Free Energy and Sticking Coefficient
  Y. Kimura; K. K. Tanaka; H. Miura; K. Tsukamoto
  CRYSTAL GROWTH & DESIGN, 12, 6, 3278, 3284, Jun. 2012
  English, Scientific journal
• Cathodoluminescence microcharacterization of forsterite in the chondrule experimentally grown under super cooling
  A. Gucsik; K. Tsukamoto; H. Nishido; H. Miura; M. Kayama; K. Ninagawa; Y. Kimura
  JOURNAL OF LUMINESCENCE, 132, 4, 1041, 1047, Apr. 2012
  English, Scientific journal
• Morphological evolution of precipitates during transformation of amorphous calcium phosphate into octacalcium phosphate in relation to role of intermediate phase
  Yuki Sugiura; Kazuo Onuma; Yuki Kimura; Hitoshi Miura; Katsuo Tsukamoto
  JOURNAL OF CRYSTAL GROWTH, 332, 1, 58, 67, Oct. 2011
  English, Scientific journal
• Morphological evolution of precipitates during transformation of amorphous calcium phosphate into octacalcium phosphate in relation to role of intermediate phase
  Yuki Sugiura; Kazuo Onuma; Yuki Kimura; Hitoshi Miura; Katsuo Tsukamoto
  JOURNAL OF CRYSTAL GROWTH, 332, 1, 58, 67, Oct. 2011
  English, Scientific journal
• AGREEMENT OF EXPERIMENT AND THEORY IN HOMOGENEOUS NUCLEATION
  Y. Kimura; K. K. Tanaka; H. Miura; K. Tsukamoto
  METEORITICS & PLANETARY SCIENCE, 46, A124, A124, Jul. 2011, [Peer-reviewed]
  English
• Magnetite 3D Colloidal Crystals Formed in the Early Solar System 4.6 Billion Years Ago
  Jun Nozawa; Katsuo Tsukamoto; Willem van Enckevort; Tomoki Nakamura; Yuki Kimura; Hitoshi Miura; Hisao Satoh; Ken Nagashima; Makoto Konoto
  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 133, 23, 8782, 8785, Jun. 2011, [Peer-reviewed]
  English, Scientific journal
• Magnetite 3D Colloidal Crystals Formed in the Early Solar System 4.6 Billion Years Ago
  Jun Nozawa; Katsuo Tsukamoto; Willem van Enckevort; Tomoki Nakamura; Yuki Kimura; Hitoshi Miura; Hisao Satoh; Ken Nagashima; Makoto Konoto
  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 133, 23, 8782, 8785, Jun. 2011
  English, Scientific journal
• Magnetite 3D Colloidal Crystals Formed in the Early Solar System 4.6 Billion Years Ago
  Jun Nozawa; Katsuo Tsukamoto; Willem van Enckevort; Tomoki Nakamura; Yuki Kimura; Hitoshi Miura; Hisao Satoh; Ken Nagashima; Makoto Konoto
  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 133, 23, 8782, 8785, Jun. 2011
  English, Scientific journal
• Interferometric in-situ observation during nucleation and growth of WO3 nanocrystals in vapor phase
  Yuki Kimura; Hitoshi Miura; Katsuo Tsukamoto; Chaorong Li; Takao Maki
  JOURNAL OF CRYSTAL GROWTH, 316, 1, 196, 200, Feb. 2011
  English, Scientific journal
• Interferometric in-situ observation during nucleation and growth of WO3 nanocrystals in vapor phase
  Yuki Kimura; Hitoshi Miura; Katsuo Tsukamoto; Chaorong Li; Takao Maki
  JOURNAL OF CRYSTAL GROWTH, 316, 1, 196, 200, Feb. 2011
  English, Scientific journal
• Synthesis of Stacked-Cup Carbon Nanotubes in a Metal Free Low Temperature System
  Yuki Kimura; Joseph A. Nuth; Natasha M. Johnson; Kevin D. Farmer; Kenneth P. Roberts; Syed R. Hussaini
  NANOSCIENCE AND NANOTECHNOLOGY LETTERS, 3, 1, 4, 10, Feb. 2011, [Peer-reviewed]
  English, Scientific journal
• Laboratory annealing experiments of refractory silicate grain analogs using differential scanning calorimetry
  Yuki Kimura; Joseph A. Nuth; Katsuo Tsukamoto; Chihiro Kaito
  METEORITICS & PLANETARY SCIENCE, 46, 1, 92, 102, Jan. 2011
  English, Scientific journal
• Interferometric observation of temperature distributions in the smoke experiment
  Y. Kimura; K. Tsukamoto
  J. Jpn. Soc. Microgravity Appl, 2011
• Laboratory annealing experiments of refractory silicate grain analogs using differential scanning calorimetry
  Yuki Kimura; Joseph A. Nuth; Katsuo Tsukamoto; Chihiro Kaito
  METEORITICS & PLANETARY SCIENCE, 46, 1, 92, 102, Jan. 2011
  English, Scientific journal
• Laboratory annealing experiments of refractory silicate grain analogs using differential scanning calorimetry
  Yuki Kimura; Joseph A. Nuth; Katsuo Tsukamoto; Chihiro Kaito
  METEORITICS & PLANETARY SCIENCE, 46, 1, 92, 102, Jan. 2011, [Peer-reviewed]
  English, Scientific journal
• DIRECT MEASUREMENTS OF HYDROGEN ATOM DIFFUSION AND THE SPIN TEMPERATURE OF NASCENT H2 MOLECULE ON AMORPHOUS SOLID WATER
  WATANABE NAOKI; KIMURA YUKI; KOUCHI AKIRA; CHIGAI TAKESHI; HAMA TETSUYA; PIRRONELLO VALERIO
  Astrophys J, 714, 2,Pt.2, L233-L237, 10 May 2010
  English
• Physicochemical processes of atomic hydrogen on amorphous solid water at very low temperatures
  Naoki Watanabe; Akira Kouchi; Hiroshi Hidaka; Yuki Kimura; Tetsuya Hama
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 239, Mar. 2010, [Peer-reviewed]
  English
• THE FORMATION OF GRAPHITE WHISKERS IN THE PRIMITIVE SOLAR NEBULA
  Joseph A. Nuth; Yuki Kimura; Christopher Lucas; Frank Ferguson; Natasha M. Johnson
  ASTROPHYSICAL JOURNAL LETTERS, 710, 1, L98, L101, Feb. 2010
  English, Scientific journal
• THE FORMATION OF GRAPHITE WHISKERS IN THE PRIMITIVE SOLAR NEBULA
  Joseph A. Nuth; Yuki Kimura; Christopher Lucas; Frank Ferguson; Natasha M. Johnson
  ASTROPHYSICAL JOURNAL LETTERS, 710, 1, L98, L101, Feb. 2010
  English, Scientific journal
• Formation of polycyclic aromatic hydrocarbon grains using anthracene and their stability under UV irradiation
  Midori Saito; Itsuki Sakon; Chihiro Kaito; Yuki Kimura
  EARTH PLANETS AND SPACE, 62, 1, 81, 90, 2010
  English, Scientific journal
• Direct measurements of hydrogen atom diffusion and the spin temperature of nascent H2 molecule on amorphous solid water
  N. Watanabe; Y. Kimura; A. Kouchi; T. Chigai; T. Hama; V. Pirronello
  The Astrophysical Journal Letters, 714, L233-L237, 2010
• Synthesis of stacked-cup carbon nanotubes in a metal free low temperature system
  Y. Kimura; J. A. Nuth III; N. M. Johnson; K. D. Farmer; K. P. Roberts; S. R. Hussaini
  Nanoscience and Nanotechnology Letters, 3, 1, 7, 2010
• Formation of polycyclic aromatic hydrocarbon grains using anthracene and their stability under UV irradiation
  Midori Saito; Itsuki Sakon; Chihiro Kaito; Yuki Kimura
  EARTH PLANETS AND SPACE, 62, 1, 81, 90, 2010
  English, Scientific journal
• AFM study on surface nanotopography of matrix olivines in Allende carbonaceous chondrite
  Jun Nozawa; Katsuo Tsukamoto; Hidekazu Kobatake; Junya Yamada; Hisao Satoh; Ken Nagashima; Hitoshi Miura; Yuki Kimura
  ICARUS, 204, 2, 681, 686, Dec. 2009
  English, Scientific journal
• ORIGIN OF ORGANIC GLOBULES IN METEORITES: LABORATORY SIMULATION USING AROMATIC HYDROCARBONS
  Midori Saito; Yuki Kimura
  ASTROPHYSICAL JOURNAL LETTERS, 703, 2, L147, L151, Oct. 2009
  English, Scientific journal
• A SEED OF SOLAR FORSTERITE AND POSSIBLE NEW EVOLUTIONAL SCENARIO OF COSMIC SILICATES
  Yuki Kimura; Joseph A. Nuth
  ASTROPHYSICAL JOURNAL LETTERS, 697, 1, L10, L13, May 2009, [Peer-reviewed]
  English, Scientific journal
• 材料あれこれ〔その他〕 46億年昔の宇宙空間での結晶化
  木村勇気; 三浦均; 塚本勝男
  日本マイクログラビティ応用学会誌, 26, 2, 139, 143, 日本マイクログラビティ応用学会, 30 Apr. 2009
  Japanese
• 46億年昔の宇宙空間での結晶化
  木村勇気; 三浦均; 塚本勝男
  日本マイクログラビティ応用学会誌, 2009
• Origin of organic globules in meteorites: Laboratory simulation using aromatic hydrocarbons
  Midori Saito; Yuki Kimura
  Astrophysical Journal, 703, 2, L147, L151, Institute of Physics Publishing, 2009
  English, Scientific journal
• Properties of Circumstellar PAHs in Various Radiation Environments
  Itsuki Sakon; Takashi Onaka; Yasuhiro Takahashi; Hidehiro Kaneda; Yuki Kimura; Midori Saito; In-Ok Song; Yoshiko Okamoto; Hirokazu Kataza; Takuya Yamashita; Takuya Fujiyoshi
  EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY, 1158, 153, +, 2009
  English, International conference proceedings
• Experimental demonstration of condensation of Mg-bearing silicate grains around evolved stars
  Y. Kimura; S. Sasaki; H. Suzuki; A. Kumamoto; M. Saito; C. Kaito
  ASTROPHYSICAL JOURNAL, 684, 2, 1496, 1501, Sep. 2008
  English, Scientific journal
• Morphological alteration and structure of ZnO particles produced in electric field
  Chihiro Kaito; Yasuhiko Kinuta; Hitoshi Suzuki; Syunsuke Adachi; Akihito Kumamoto; Yoshio Saito; Yuki Kimura
  JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77, 9, 094708-1-094708-4, Sep. 2008
  English, Scientific journal
• Morphological alteration and structure of ZnO particles produced in electric field
  Chihiro Kaito; Yasuhiko Kinuta; Hitoshi Suzuki; Syunsuke Adachi; Akihito Kumamoto; Yoshio Saito; Yuki Kimura
  JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77, 9, 094708.1-094708.4, Sep. 2008
  English, Scientific journal
• POSSIBLE DRIVING FORCE BEHIND FORMATION OF COSMIC CARBYNE CRYSTALS
  Yuki Kimura; Chihiro Kaito
  ASTROPHYSICAL JOURNAL LETTERS, 685, 1, L83, L86, Sep. 2008, [Peer-reviewed]
  English, Scientific journal
• Morphological alteration and structure of ZnO particles produced in electric field
  Chihiro Kaito; Yasuhiko Kinuta; Hitoshi Suzuki; Syunsuke Adachi; Akihito Kumamoto; Yoshio Saito; Yuki Kimura
  JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77, 9, Sep. 2008, [Peer-reviewed]
  English, Scientific journal
• Direct observation of MoO(2) crystal growth from amorphous MoO(3) film
  Kenji Nina; Yuki Kimura; Kaorl Yokoyama; Osamu Kido; Gong Binyo; Chihiro Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 40, 9, 2995, 2998, Aug. 2008
  English, Scientific journal
• Structural Alterations of Carbon Particles in Saturated Water Vapor
  Chihiro Kaito; Masayuki Shintaku; Ryuta Sakao; Akihito Kumamoto; Midori Saito; Yuki Kimura; Shinsuke Ohyagi; Shigeru Morikawa; Hiroshi Suzuki
  JAPANESE JOURNAL OF APPLIED PHYSICS, 47, 8, 6588, 6591, Aug. 2008
  English, Scientific journal
• Structural Alterations of Carbon Particles in Saturated Water Vapor
  Chihiro Kaito; Masayuki Shintaku; Ryuta Sakao; Akihito Kumamoto; Midori Saito; Yuki Kimura; Shinsuke Ohyagi; Shigeru Morikawa; Hiroshi Suzuki
  JAPANESE JOURNAL OF APPLIED PHYSICS, 47, 8, 6588, 6591, Aug. 2008
  English, Scientific journal
• Crystallinity of Mg-bearing silicate grains due to condensation or thermal evolution
  Y. Kimura; C. Kaito; J. A. Nuth
  METEORITICS & PLANETARY SCIENCE, 43, 7, A76, A76, Jul. 2008, [Peer-reviewed]
  English
• Characteristic low-temperature crystallization of amorphous Mg-bearing silicate grains under electron irradiation
  Yuki Kimura; Yu Miyazaki; Akihito Kumamoto; Midori Saito; Chihiro Kaito
  ASTROPHYSICAL JOURNAL LETTERS, 680, 1, L89, L92, Jun. 2008
  English, Scientific journal
• Production of refractory-metal ultrafine particles by gas evaporation method and their surface oxide layer
  Yuki Kimura; Chihiro Kaito
  SURFACE & COATINGS TECHNOLOGY, 202, 17, 4159, 4162, May 2008
  English, Scientific journal
• A refractory Ca-SiO-H(2)-O(2) vapor condensation experiment with implications for calciosilica dust transforming to silicate and carbonate minerals
  Frans J. M. Rietmeijer; Aurora Pun; Yuki Kimura; Joseph A. Nuth
  ICARUS, 195, 1, 493, 503, May 2008
  English, Scientific journal
• A refractory Ca-SiO-H(2)-O(2) vapor condensation experiment with implications for calciosilica dust transforming to silicate and carbonate minerals
  Frans J. M. Rietmeijer; Aurora Pun; Yuki Kimura; Joseph A. Nuth
  ICARUS, 195, 1, 493, 503, May 2008, [Peer-reviewed]
  English, Scientific journal
• 原始太陽系星雲中での物質進化に関わるダストの振る舞い
  木村勇気
  日本惑星科学会誌 遊・星・人, 17, 1, 62, 68, The Japanese Society for Planetary Sciences, 25 Mar. 2008
  Japanese, ガスと宇宙固体微粒子(ダスト)から成る原始太陽系星雲中で,どのような物質進化を経て我々の太陽系が誕生したのだろうか,物理化学環境が異なる他の惑星系星雲中ではどのような物質進化を経るのであろうか.この疑問に対して実験室で再現実験からのアプローチを行なっている.ガスが凝縮してダストを形成する際,ナノメートルサィズを経て成長していく為,成長の初期段階においてはナノ領域特有の現象を考慮しなければならない.今回,ガス中蒸発法を応用したダスト類似物の生成実験と,ナノメートルサィズの微粒子の振る舞いに加え,ダストの成長や変成に対する駆動力として,プラズマや紫外線等がどの様に寄与するかについて述べる.
• 原始太陽系星雲中での物質進化に関わるダストの振る舞い,
  木村勇気
  日本惑星科学会誌, 17, 62, 68, 2008
• Possible Driving Force behind Formation of Cosmic Carbyne Crystals
  Y. Kimura; C. Kaito
  The Astrophysical Journal Letters, 685, 83, 86, 2008
• In situ observation of structural alteration process of filmy quenched carbonaceous composite
  Kumamoto A; Kimura Y; Kaito C; Wada S
  IAU Symposium Proceedings Series, 4, 433, 434, 2008, [Peer-reviewed]
• Structural alteration of nanostructure carbon particles carrying Pt clusters in H-2 and O-2 gases
  Chihiro Kaito; Ryoichi Ono; Ryuta Sakao; Akihito Kuniamoto; Midori Saito; Yuki Kimura; Shinsuke Ohyagi
  JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 46, 45-49, L1141, L1142, Dec. 2007
  English, Scientific journal
• Exothermic chemical reactions can drive nonthermal crystallization of amorphous silicate grains
  Chihiro Kaito; Yu Miyazaki; Akihito Kumamoto; Yuki Kimura
  ASTROPHYSICAL JOURNAL, 666, 1, L57, L60, Sep. 2007
  English, Scientific journal
• What is the driving force to form refractory oxide grains? Silicate spectra depend on their formation environment
  Yuki Kimura; Joseph A. Nuth
  ASTROPHYSICAL JOURNAL, 664, 2, 1253, 1263, Aug. 2007
  English, Scientific journal
• Non-mass-dependent oxygen isotopic fractionation in smokes produced in an electrical discharge
  Yuki Kimura; Joseph A. Nuth; Subrata Chakpaborty; Mark H. Thiemens
  METEORITICS & PLANETARY SCIENCE, 42, 7-8, 1429, 1439, Jul. 2007
  English, Scientific journal
• Crystal Growth on Mineralogical Evolution in the Early Solar Nebula
  KIMURA YUKI; KAITO CHIHIRO
  日本結晶成長学会誌, 34, 2, 89, 93, Jul. 2007
  Japanese
• Direct observation of the crystallization of carbon-coated amorphous Mg-bearing silicate grains
  Chihiro Kaito; Shinichi Sasaki; Yu Miyazaki; Akihito Kumamoto; Mami Kurumada; Kaori Yokoyama; Midori Saito; Yuki Kimura; Hitoshi Suzuki
  Advances in Geosciences: Volume 7: Planetary Science (PS), 7, 125, 131, World Scientific Publishing Co., 01 Jan. 2007
  English, In book
• New method of producing titanium carbide, monoxide, and dioxide grains in laboratory
  Akihito Kumamoto; Mami Kurumada; Yuki Kimura; Chihiro Kaito
  Advances in Geosciences: Volume 7: Planetary Science (PS), 7, 93, 99, World Scientific Publishing Co., 01 Jan. 2007
  English, In book
• 原始太陽系における物質進化に関わる結晶成長
  木村勇気; 墻内千尋
  2007
• Electric field effect for Pt particle on carbon particle
  H. Suzuki; H. Shingu; S. Morikawa; S. Ohyagi; Y. Kimura; M. Shintaku; A. Kumamoto; C. Kaito
  ECS Transactions, 5, 1, 79, 87, 2007
  English, International conference proceedings
• Variety of refractory oxide grains depend on formation environments
  Y. Kimura; J. A. Nuth
  METEORITICS & PLANETARY SCIENCE, 41, 8, A95, A95, Aug. 2006, [Peer-reviewed]
  English
• Demonstration of crystal forsterite and stall state grain formations
  C. Kaito; S. Sasaki; Y. Miyazaki; M. Kurumada; A. Kumamoto; H. Suzuki; Y. Kimura; C. Koike
  METEORITICS & PLANETARY SCIENCE, 41, 8, A91, A91, Aug. 2006, [Peer-reviewed]
  English
• Influence of plasma on formation of crystalline Fe2SiO4 grains
  T Sato; M Kurumada; K Kamitsuji; O Kido; H Suzuki; M Shintaku; Y Kimura; Y Saito; C Kaito
  PLANETARY AND SPACE SCIENCE, 54, 6, 612, 616, May 2006
  English, Scientific journal
• Laboratory analogy of crystalline enstatite grain formation in plasma field
  T Sato; K Kamitsuji; M Shintaku; Y Kimura; M Kurumada; O Kido; H Suzuki; Y Saito; C Kaito
  PLANETARY AND SPACE SCIENCE, 54, 6, 617, 620, May 2006
  English, Scientific journal
• Formation of TiC core-graphitic mantle grains from CO gas
  Yuki Kimura; Joseph A. Nuth; Frank T. Ferguson
  METEORITICS & PLANETARY SCIENCE, 41, 5, 673, 680, May 2006
  English, Scientific journal
• Synthesis of Al-Cr decagonal quasicrystal nanoparticles and their temperature of phase transformation to stable crystal phase
  O Kido; M Kurumada; K Kamltsuji; T Tanigaki; T Sato; Y Kimura; H Suzuki; Y Saito; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 31, 2, 169, 173, Mar. 2006
  English, Scientific journal
• Formation of CaTiO3 crystalline dust in laboratory
  K. Yokoyama; Y. Kimura; O. Kido; M. Kurumada; A. Kumamoto; C. Kaito
  Advances in Geosciences, 7, 115, 123, 2006
• Laboratory production of magnesium sulfide grains and their characteristic infrared spectra due to shape
  Y Kimura; M Kurumada; K Tamura; C Koike; H Chihara; C Kaito
  ASTRONOMY & ASTROPHYSICS, 442, 2, 507, 512, Nov. 2005
  English, Scientific journal
• Is the 21 micron feature observed in some post-AGB stars caused by the interaction between Ti atoms and fullerenes?
  Y Kimura; JA Nuth; FT Ferguson
  ASTROPHYSICAL JOURNAL, 632, 2, L159, L162, Oct. 2005
  English, Scientific journal
• Is the 21 micron feature observed in some post-AGB stars caused by the interaction between Ti atoms and fullerenes?
  Y Kimura; JA Nuth; FT Ferguson
  ASTROPHYSICAL JOURNAL, 632, 2, L159, L162, Oct. 2005, [Peer-reviewed]
  English, Scientific journal
• Laboratory production of monophase pyrrhotite grains using solid-solid reaction and their characteristic infrared spectra
  Y Kimura; K Tamura; C Koike; H Chihara; C Kaito
  ICARUS, 177, 1, 280, 285, Sep. 2005
  English, Scientific journal
• Laboratory synthesized calcium oxide and calcium hydroxide grains: A candidate to explain the 6.8 mu m band
  Y Kimura; JA Nuth
  ASTROPHYSICAL JOURNAL, 630, 1, 637, 641, Sep. 2005, [Peer-reviewed]
  English, Scientific journal
• Formation of carbon nanotubes from mixture film of carbon and titanium
  Y Kimura; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 28, 3, 281, 285, Aug. 2005
  English, Scientific journal
• Direct observation of thermal alteration of mixed film of Ge and SiO
  C Kaito; K Kamitsuji; S Tanaka; O Kido; M Kurumada; T Sato; Y Kimura; H Suzuki; Y Saito
  THIN SOLID FILMS, 483, 1-2, 396, 399, Jul. 2005
  English, Scientific journal
• Novel routes for diamond formation in interstellar ices and meteoritic parent bodies
  A. Kouchi; H. Nakano; Y. Kimura; C. Kaito
  Astrophysical Journal, 626, 2, L129, L132, Institute of Physics Publishing, 20 Jun. 2005
  English, Scientific journal
• Production of diamond and solid-solution nanoparticles in the carbon-silicon system using radio-frequency plasma
  Y Kimura; T Sato; C Kaito
  CARBON, 43, 7, 1570, 1574, Jun. 2005
  English
• Formation of new carbides with diamond structure from carbon film containing transition metal.
  Y Kimura; C Kaito
  THIN SOLID FILMS, 476, 1, 65, 67, Apr. 2005
  English, Scientific journal
• Crystal structure and growth of carbon-silicon mixture film prepared by ion sputtering
  Y. Kimura; M. Ishikawa; M. Kurumada; T. Tanigaki; H. Suzuki; C. Kaito
  JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E977, E981, Feb. 2005
  English, Scientific journal
• Structure of WO3 ultrafine particles and their characteristic solid states
  Mami Kurumada; Osamu Kido; Takeshi Sato; Hitoshi Suzuki; Yuki Kimura; Katsuya Kamitsuji; Yoshio Saito; Chihiro Kaito
  JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E1673, E1678, Feb. 2005
  English, Scientific journal
• Production of transition metal-doped ZnO nanoparticles by using RF plasma field
  Takeshi Sato; Hitoshi Suzuki; Osamu Kido; Mami Kurumada; Katsuya Kamitsuji; Yuki Kimura; Hiromichi Kawasaki; Satoo Kaneko; Yoshio Saito; Chihiro Kaito
  JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E983, E987, Feb. 2005
  English, Scientific journal
• Morphological alteration upon phase transition and effects of oxygen impurities of chromium nanoparticles
  Osamu Kido; Katsuya Kamitsuji; Mami Kurumada; Takeshi Sato; Yuki Kimura; Hitoshi Suzuki; Yoshio Saito; Chihiro Kaito
  JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E1745, E1750, Feb. 2005
  English, Scientific journal
• Laboratory synthesized calcium oxide and calcium hydroxide grains: A candidate to explain the 6.8 μm band
  Y. Kimura; J. A. Nuth III
  The Astrophysical Journal, 630, 637, 641, 2005
• Crystalline Mg2SiO4 and amorphous Mg-bearing silicate grain formation by coalescence and growth
  K Kamitsuji; H Suzuki; Y Kimura; T Sato; Y Saito; C Kaito
  ASTRONOMY & ASTROPHYSICS, 429, 1, 205, 208, Jan. 2005
  English, Scientific journal
• Transition temperature to crystal phase of Al86Mn14 quasicrystal ultrafine particles determined by direct observation and characterization of surface oxide layer
  O Kido; H Suzuki; Y Kimura; T Sato; Y Saito; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 25, 4, 619, 624, Jan. 2005
  English, Scientific journal
• Direct observation of the formation of alumina phase by metallic Al solid-SiO(2) solid reaction
  S Sasaki; H Suzuki; Y Kimura; T Sato; T Tanigaki; O Kido; K Kamitsuji; M Kurumada; C Kaito
  EARTH PLANETS AND SPACE, 57, 5, 399, 401, 2005
  English, Scientific journal
• Direct observation of the metamorphism of silicon oxide grains
  K Kamitsuji; S Ueno; H Suzuki; Y Kimura; T Sato; T Tanigaki; O Kido; M Kurumada; C Kaito
  ASTRONOMY & ASTROPHYSICS, 422, 3, 975, 979, Aug. 2004
  English, Scientific journal
• Growth of diamond from Si-containing amorphous carbon film using synchrotron radiation
  Y Kimura; O Kido; M Oomoto; K Ogawa; H Namba; C Kaito
  JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 43, 7A, L888, L890, Jul. 2004
  English, Scientific journal
• Phase transition temperature of gamma-Fe2O3 ultrafine particle
  O Kido; Y Higashino; K Kamitsuji; M Kurumada; T Sato; Y Kimura; H Suzuki; Y Saito; C Kaito
  JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73, 7, 2014, 2016, Jul. 2004
  English, Scientific journal
• Phase transition temperature of gamma-Fe2O3 ultrafine particle
  O Kido; Y Higashino; K Kamitsuji; M Kurumada; T Sato; Y Kimura; H Suzuki; Y Saito; C Kaito
  JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73, 7, 2014, 2016, Jul. 2004, [Peer-reviewed]
  English, Scientific journal
• Growth of diamond from Si-containing amorphous carbon film using synchrotron radiation
  Y Kimura; O Kido; M Oomoto; K Ogawa; H Namba; C Kaito
  JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 43, 7A, L888, L890, Jul. 2004, [Peer-reviewed]
  English, Scientific journal
• Correlations between crystallite size, shape, surface, and infrared spectra using the Ti-C system
  Y Kimura; A Ikegami; M Kurumada; K Kamitsuji; C Kaito
  ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 152, 2, 297, 301, Jun. 2004
  English, Scientific journal
• TEM study of early Ni4Ti3 precipitation and R-phase in Ni-rich NiTi nanoparticles
  M Kurumada; Y Kimura; H Suzuki; O Kido; Y Saito; C Kaito
  SCRIPTA MATERIALIA, 50, 11, 1413, 1416, Jun. 2004
  English, Scientific journal
• Growth and structure of Ge clusters produced by Ge-C co-evaporation
  S Tanaka; O Kida; M Kurumada; K Kamitsuji; Y Kimura; H Suzuki; Y Saito; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 23, 1-2, 108, 113, Jun. 2004
  English, Scientific journal
• Correlations between crystallite size, shape, surface, and infrared spectra using the Ti-C system
  Y Kimura; A Ikegami; M Kurumada; K Kamitsuji; C Kaito
  ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 152, 2, 297, 301, Jun. 2004, [Peer-reviewed]
  English, Scientific journal
• Pentagonal configuration in GaP ultrafine particle
  T Tanigaki; Y Kimura; H Suzuki; M Kurumada; C Kaito
  JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73, 5, 1375, 1376, May 2004
  English, Scientific journal
• Novel method of doping tungsten into zinc oxide ultrafine particle using RF plasma system
  T Sato; H Suzuki; O Kido; M Kurumada; K Kamitsuji; Y Kimura; A Takeda; S Kaneko; Y Saito; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 265, 1-2, 149, 153, Apr. 2004
  English, Scientific journal
• Novel method of doping tungsten into zinc oxide ultrafine particle using RF plasma system
  T Sato; H Suzuki; O Kido; M Kurumada; K Kamitsuji; Y Kimura; A Takeda; S Kaneko; Y Saito; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 265, 1-2, 149, 153, Apr. 2004, [Peer-reviewed]
  English, Scientific journal
• Production and structural characterization of carbon soot with narrow UV absorption feature
  Y Kimura; T Sato; C Kaito
  CARBON, 42, 1, 33, 38, 2004
  English, Scientific journal
• Direct observation of sublimation process on a CdTe(111) surface using an ultrafine particle
  T Tanigaki; Y Kimura; H Suzuki; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 260, 3-4, 298, 303, Jan. 2004
  English, Scientific journal
• Mechanism of copper selenide growth on copper-oxide-selenium system
  Y Ishikawa; O Kido; Y Kimura; M Kurumada; H Suzuki; Y Saito; C Kaito
  SURFACE SCIENCE, 548, 1-3, 276, 280, Jan. 2004
  English, Scientific journal
• Effect of RF plasma field on the growth of C-60 crystals
  T Sato; O Kido; M Kurumada; Y Kimura; H Suzuki; Y Saito; C Kaito
  CARBON, 42, 8-9, 1875, 1877, 2004
  English
• Structure and thickness of natural oxide layer on ultrafine particle
  K Tamura; Y Kimura; H Suzuki; O Kido; T Sato; T Tanigaki; M Kurumada; Y Saito; C Kaito
  JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 42, 12, 7489, 7492, Dec. 2003
  English, Scientific journal
• Infrared spectra of ZrC presolar grain analogues
  Y Kimura; C Kaito
  ASTRONOMY & ASTROPHYSICS, 409, 1, 159, 161, Oct. 2003
  English, Scientific journal
• Dynamic behavior of SiO- and SiO2-coated ZnO ultrafine particles and growth mechanism of Zn2SiO4 crystal
  T Tanigaki; H Suzuki; Y Kimura; O Kido; Y Saito; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 256, 3-4, 317, 323, Sep. 2003
  English, Scientific journal
• Structural control of silicon oxide particles by oxygen partial pressure in RF plasma
  T Sato; A Takeda; Y Kimura; H Suzuki; Y Saito; C Kaito
  JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 42, 9A, 5896, 5897, Sep. 2003
  English, Scientific journal
• Titanium carbide particles as pre-solar grains
  Y. Kimura; C. Kaito
  Monthly Notices of the Royal Astronomical Society, 343, 2, 385, 389, 01 Aug. 2003
  English, Scientific journal
• Production of nanodiamond from carbon film containing silicon
  Y Kimura; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 255, 3-4, 282, 285, Aug. 2003
  English, Scientific journal
• Dynamic behavior of Au cluster on the surface of silicon nanoparticles
  Y Kimura; H Ueno; H Suzuki; T Tanigaki; T Sato; Y Saito; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 19, 3, 298, 302, Aug. 2003
  English, Scientific journal
• Growth process of TiC clusters from Ti nanoparticles with evaporated carbon layer
  A Ikegami; Y Kimura; H Suzuki; T Sato; T Tanigaki; O Kido; M Kurumada; Y Saito; C Kaito
  SURFACE SCIENCE, 540, 2-3, 395, 400, Aug. 2003
  English, Scientific journal
• Structure and optical spectrum of ZnO nanoparticles produced in RF plasma
  T Sato; T Tanigaki; H Suzuki; Y Saito; O Kido; Y Kimura; C Kaito; A Takeda; S Kaneko
  JOURNAL OF CRYSTAL GROWTH, 255, 3-4, 313, 316, Aug. 2003
  English, Scientific journal
• Dynamic behavior of Au cluster on the surface of silicon nanoparticles
  Y Kimura; H Ueno; H Suzuki; T Tanigaki; T Sato; Y Saito; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 19, 3, 298, 302, Aug. 2003, [Peer-reviewed]
  English, Scientific journal
• In situ observation of silicon carbide formation process using electron microscope
  M Ishikawa; Y Kimura; H Suzuki; O Kida; T Tanigaki; T Sato; Y Saito; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 254, 1-2, 131, 136, Jun. 2003
  English, Scientific journal
• Characteristic crystal growth from amorphous WO3 film by vacuum heating
  Y Kimura; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 250, 3-4, 450, 457, Apr. 2003
  English, Scientific journal
• Dynamic behavior of a silicon oxide layer on silicon ultrafine particles
  Y Kimura; H Ueno; H Suzuki; T Sato; T Tanigaki; O Kido; C Kaito; Y Saito
  SURFACE REVIEW AND LETTERS, 10, 2-3, 361, 364, Apr. 2003
  English, Scientific journal
• Atomic observation of the sublimation process of the Pb (111) surface
  T Tanigaki; H Suzuki; Y Kimura; C Kaito; Y Saito
  SURFACE REVIEW AND LETTERS, 10, 2-3, 455, 459, Apr. 2003
  English, Scientific journal
• Dynamic process of crystallization of Sb2Se3 from Sb50Se50 amorphous film
  M Kurumada; H Suzuki; Y Kimura; Y Saito; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 250, 3-4, 444, 449, Apr. 2003
  English, Scientific journal
• Dynamic behavior of a silicon oxide layer on silicon ultrafine particles
  Y Kimura; H Ueno; H Suzuki; T Sato; T Tanigaki; O Kido; C Kaito; Y Saito
  SURFACE REVIEW AND LETTERS, 10, 2-3, 361, 364, Apr. 2003, [Peer-reviewed]
  English, Scientific journal
• Are TiC grains a carrier of the 21 micron emission band observed around post-asymptotic giant branch objects?
  T Chigai; T Yamamoto; C Kaito; Y Kimura
  ASTROPHYSICAL JOURNAL, 587, 2, 771, 776, Apr. 2003, [Peer-reviewed]
  English, Scientific journal
• High-temperature behavior of an amorphous carbon layer on SiC particles
  Y Kimura; Y Saito; C Kaito
  SURFACE SCIENCE, 527, 1-3, L219, L221, Mar. 2003
  English, Scientific journal
• Novel method for the preparation of silicon oxide layer on TiO2 particle and dynamic behavior of silicon oxide layer on TiO2 particle
  Y Atou; H Suzuki; Y Kimura; T Sato; T Tanigaki; Y Saito; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 16, 2, 179, 189, Feb. 2003
  English, Scientific journal
• Characteristic behavior of Bi clusters and growth process to the continuous film
  C Kaito; Y Kimura; S Tominaga; S Kimura; T Nakada; Y Saito
  PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 5-6, 1, 7, 2003
  English, Scientific journal
• Are TiC grains a carrier of the 21-μm emission band observed around the post-AGB objects?
  T. Chigai; T. Yamamoto; C. Kaito; Y. Kimura
  The Astrophysical Journal, 587, 2, 771, 776, 2003
• Demonstration of crystalline forsterite grain formation due to coalescence growth of Mg and SiO smoke particles
  C Kaito; Y Ojima; K Kamitsuri; O Kido; Y Kimura; H Suzuki; T Sato; T Nakada; Y Saito; C Koike
  METEORITICS & PLANETARY SCIENCE, 38, 1, 49, 57, Jan. 2003
  English, Scientific journal
• Diffusion Constant of Hydrogen Atoms in H2O + CO Ice
  Kimura, Y; Chigai, T; Yamamoto, T; Shalabiea, O. M; Awad, Z
  Proceedings of the 36th ISAS Lunar and Planetary Symposium, 254, 257, 2003
• Alteration of interstellar organic materials in meteorites' parent bodies: a novel route for diamond formation
  H Nakano; A Kouchi; M Arakawa; Y Kimura; C Kaito; H Ohno; T Hondoh
  PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES, 78, 9, 277, 281, Nov. 2002
  English, Scientific journal
• Fabrication of an amorphous carbon tube from copper oxide whisker
  H Suzuki; N Fukuzawa; T Tanigaki; T Sato; O Kido; Y Kimura; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 244, 2, 168, 172, Oct. 2002
  English, Scientific journal
• Irradiation effect of synchrotron radiation on crystallization of thin amorphous WO3 film
  Y Kimura; K Hanamoto; Y Nakayama; C Kaito
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 194, 2, 187, 192, Aug. 2002
  English, Scientific journal
• Process of crystallization in thin amorphous tin oxide film
  T Kobayashi; Y Kimura; H Suzuki; T Sato; T Tanigaki; Y Saito; C Kaito
  JOURNAL OF CRYSTAL GROWTH, 243, 1, 143, 150, Aug. 2002
  English, Scientific journal
• Aqueousalteration and thermal metamorphism of interstellar organic materials on the parent bodies ofcarbonaceous chondrites
  Hideyuki NAKANO; Akira KOUCHI; Masahiko ARAKAWA; Yuki KIMURA; Chihiro KAITO; Hiroshi OHNO; Takeo HONDOH
  Proceedings of the 35th ISAS Lunar and Planetary Symposium, 183, 186, 宇宙科学研究所, Aug. 2002
  English
• Effects of SR irradiation on tin-doped indium oxide thin film prepared by rf magnetron sputtering
  M Sasaki; K Hanamoto; Y Kimura; C Kaito; H Miki; Y Nakayama
  REVIEW OF SCIENTIFIC INSTRUMENTS, 73, 3, 1384, 1386, Mar. 2002
  English, Scientific journal
• Spontaneous mixing of binary alkali halide crystal by successive evaporation
  Y Kimura; Y Saito; T Nakada; C Kaito
  PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 13, 1, 11, 23, Jan. 2002
  English, Scientific journal
• Growth process of carbyne crystals by synchrotron irradiation
  Y Kimura; C Kaito; K Hanamoto; M Sasaki; S Kimura; T Nakada; Y Saito; Y Nakayama
  CARBON, 40, 7, 1043, 1050, 2002
  English, Scientific journal
• Crystallization and selective growth of amorphous Y-Ba-Cu-O film
  T. Tanigaki; S. Ariumi; H. Suzuki; Y. Kimura; S. Kimura; T. Sato; N. Tsuda; T. Nakada; Y. Saito; C. Kaito
  Physics of Low-Dimensional Structures, 11/12, 77, 84, 2002
• Ordered alloy formation by the use of reaction between ultrafine particle and cluster
  T Tsurusako; T Tanigaki; H Suzuki; Y Kimura; T Sato; O Kido; Y Saito; C Kaito
  PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 7-8, 77, 86, 2002
  English, Scientific journal
• A new-attempt on reduction of ultrafine oxide particles
  H Suzuki; T Tanigaki; T Sato; O Kido; Y Atou; Y Kimura; C Kaito
  PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 7-8, 99, 105, 2002
  English, Scientific journal
• Growth process of carbyne crystals by synchrotron irradiation
  Y Kimura; C Kaito; K Hanamoto; M Sasaki; S Kimura; T Nakada; Y Saito; Y Nakayama
  CARBON, 40, 7, 1043, 1050, 2002, [Peer-reviewed]
  English, Scientific journal
• Characterization and selective growth of amorphous Y-Ba-Cu-O film
  T Tanigaki; S Ariumi; H Suzuki; Y Kimura; S Kimura; T Sato; N Tsuda; T Nakada; Y Saito; C Kaito
  PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 11-2, 77, 84, 2002, [Peer-reviewed]
  English, Scientific journal
• Effect of SR irradiation on crystallization of amorphous tin oxide film
  Y Kimura; T Kobayashi; K Hanamoto; M Sasaki; S Kimura; T Nakada; Y Nakayama; C Kaito
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1221, 1224, Jul. 2001
  English, Scientific journal
• Carbyne formation by synchrotron radiation
  C Kaito; Y Kimura; K Hanamoto; M Sasaki; S Kimura; T Nakada; Y Saito; C Koike; Y Nakayama
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1217, 1220, Jul. 2001
  English, Scientific journal
• Effect of SR irradiation on In2O3 film
  K Hanamoto; A Hirai; M Sasaki; Y Kimura; K Miyatani; C Kaito; Y Nakayama
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1213, 1216, Jul. 2001
  English, Scientific journal
• Topotactical growth of indium sulfide by evaporation of metal onto molybdenite
  C Kaito; A Ito; S Kimura; Y Kimura; Y Saito; T Nakada
  JOURNAL OF CRYSTAL GROWTH, 218, 2-4, 259, 264, Sep. 2000
  English, Scientific journal
• Characterization of indium tin oxide film and practical ITO film by electron microscopy
  T Nakao; T Nakada; Y Nakayama; K Miyatani; Y Kimura; Y Saito; C Kaito
  THIN SOLID FILMS, 370, 1-2, 155, 162, Jul. 2000
  English, Scientific journal
• Spontaneous alkali halide formation by the use of KBr-KCl system
  Y Kimura; Y Saito; T Nakada; C Kaito
  PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 1-2, L1, L7, 2000
  English
• The structure of thin Cr film prepared by the vacuum evaporation method
  C Kaito; H Nakamura; S Kimura; Y Kimura; T Nakada; Y Saito
  THIN SOLID FILMS, 359, 2, 283, 287, Jan. 2000
  English, Scientific journal
• The structure of thin Cr film prepared by the vacuum evaporation method
  C Kaito; H Nakamura; S Kimura; Y Kimura; T Nakada; Y Saito
  THIN SOLID FILMS, 359, 2, 283, 287, Jan. 2000, [Peer-reviewed]
  English, Scientific journal
• Surface oxide on tin and indium ultrafine particles and their oxidation process
  C Kaito; T Nakao; Y Ato; Y Kimura; S Kimura; T Nakada; Y Saito
  PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 12, 53, 60, 1999
  English, Scientific journal
• LOCAL DIELECTRIC-PROPERTIES AROUND POLAR-REGION OF LIPID BILAYER-MEMBRANES
  Y KIMURA; A IKEGAMI
  JOURNAL OF MEMBRANE BIOLOGY, 85, 3, 225, 231, 1985, [Peer-reviewed]
  English, Scientific journal

• Refinement of in-situ images by machine learning on liquid-cell transmission electron microscopy
  勝野弘康; 木村勇気; 山崎智也; 瀧川一学, 日本物理学会講演概要集(CD-ROM), 79, 2, 2024
• Phoenix "Hayabusa": A tale of the future (30) - Scientific results from the Ryugu "Stone" analysis team -
  Nakamura T.; Amano K.; Matsuoka M.; Kurosawa K.; Ninomiya K.; Osawa T.; Kimura Y.; Genda H.; Tanaka S.; Initial analysis Stone team, Planetary People - The Japanese Society for Planetary Sciences, 32, 3, 226, 235, Sep. 2023
  初期分析「石」分析チームではリュウグウのミリメータサイズのサンプル（探査機が2回目のタッチダウンで採集した最大サンプルを含む17粒子）を日米欧の放射光施設，ミュオン施設などを利用し物質分析を行った[1]．その結果，リュウグウ母天体の原始惑星系円盤内での形成位置，集積物質の岩石鉱物学的情報，集積した氷の種類，天体内部での水との反応による化学進化，天体衝突の影響について知見が得られた．リュウグウサンプルには，水岩石反応の進行度が異なる物質が混在していることが判明した．リュウグウサンプルの物性（破壊強度，熱拡散係数，比熱，密度など）を実測した．この実測値を使って，リュウグウ母天体形成後の天体内部の加熱による温度経時変化，および衝突破壊プロセスの数値シミュレーションを行い，リュウグウの形成進化を再現した．, The Japanese Society for Planetary Sciences, Japanese
• Discovery of Clathrate Hydrate Crystals in Environmental-Cell Transmission Electron Microscopy
  山崎智也; 内田努; 木村勇気, 結晶成長国内会議予稿集(CD-ROM), 52nd, 2023
• 観測ロケットによる微小重力実験で見られた非古典的核生成経由のダスト形成
  木村勇気; 稲富裕光; 田中今日子; 齋藤史明; 千貝健; 森章一; 中坪俊一; 竹内伸介; AKTAS Coskun; BLUM Juergen, 日本惑星科学会秋季講演会予稿集(Web), 2023, 2023
• 航空機を用いた微小重力環境下における氷ナノ粒子の核生成実験の速報—Preliminary Results of Nucleation Experiments of Ice Nanoparticles in Microgravity Using an Aircraft
  木村, 勇気; 山﨑, 智也; 屋嶋, 悠河; 中埜, 夕希; 森, 章一; 稲富, 裕光; KIMURA, Yuki; YAMAZAKI, Tomoya; YASHIMA, Yuga; NAKANO, Yuki; MORI, Shoichi; INATOMI, Yuko, 宇宙環境利用シンポジウム 第37回： 令和四年度 = Space Utilization Research, Vol. 37 2022: Proceedings of The Thirty-seventh Space Utilization Symposium, Jan. 2023
  第37回宇宙環境利用シンポジウム (2023年1月17日-18日. オンライン開催)
  Space Utilization Research (January 17-18, 2023. Online Meeting)
  資料番号: SA6000180005
  F-4, 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS), Japanese
• Nucleation pathway by detection of nucleation of LC-TEM image using machine learning
  勝野弘康; 木村勇気; 山崎智也; 瀧川一学; 瀧川一学, 日本物理学会講演概要集(CD-ROM), 77, 2, 2022
• Investigation of formation efficiency of silica nanoparticles for understanding the formation process of circumstellar dust
  木村勇気; 田中今日子; 稲富裕光; 稲富裕光; FERGUSON Frank T.; FERGUSON Frank T.; NUTH Joseph A.,III, 結晶成長国内会議予稿集(CD-ROM), 51st, 2022
• Homogeneous nucleation experiments of silicate nanoparticles under microgravity environment in global cooperation
  木村勇気; NUTH Joseph A.; FERGUSON Frank T.; 斎藤史明; 中坪俊一; 千貝健; 森章一; 稲富裕光, 日本物理学会講演概要集(CD-ROM), 75, 1, 2020
• Preparation for nucleation experiment of ice nanoparticles by the low-temperature gas evaporation method under microgravity condition
  Kimura Yuki; Kouchi Akira; Yamazaki Tomoya; Satoh Yosuke; Saito Fumiaki; Inatomi Yuko, 宇宙環境利用シンポジウム 第34回： 令和元年度 = Space Utilization Research, Vol. 34 2019: Proceedings of The Thirty-fourth Space Utilization Symposium, 34, Jan. 2020
  Space Utilization Research (January 21-22, 2020. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa JapanE-04, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS), Japanese
• 国際協力による微小重力環境下での炭化チタン粒子の均質核生成実験
  木村勇気; 斎藤史明; 中坪俊一; 千貝健; 森章一; 稲富裕光, 日本物理学会講演概要集(CD-ROM), 74, 2, 2019
• Elucidate of the formation processes of presolar TiC grains by nucleation experiment from a vapor phase
  木村勇気; 稲富裕光; 稲富裕光; 斎藤史明; 中坪俊一; 千貝健; 森章一, 結晶成長国内会議予稿集(CD-ROM), 48th, 2019
• アモルファスMg₂SiO₄微粒子を覆った氷の光化学反応によるフォルステライト結晶の生成
  香内晃; 木村勇気; 大場康弘; 羽馬哲也; 渡部直樹; 橘省吾; 土山明; 延寿里美; 大坪貴文, 日本地球惑星科学連合大会予稿集(Web), 2019, 2019
• 宇宙環境曝露実験によって探る炭素質星間塵の性質
  左近樹; 池内綾人; 遠藤いずみ; 尾中敬; 木村誠二; 木村勇気; 中村正人; 市村淳; 藪田ひかる; 小川奈々子; 大河内直彦; 稲富裕光; 和田節子, 日本天文学会年会講演予稿集, 2018, 2018
• The effect of exposure to the space environment on the infrared properties of carbon and silicate dust
  遠藤いずみ; 左近樹; 尾中敬; 木村勇気; 木村誠二; 中村正人; 市村淳; 稲富裕光; 和田節子, 宇宙科学技術連合講演会講演集(CD-ROM), 62nd, 2018
• 観測ロケットを用いた微小重力環境下でのダスト生成過程の再現実験
  木村勇気; NUTH Joseph; BLUM Jurgen; 石塚紳之介; 田中今日子; 野沢貴也; 左近樹; 田中秀和; 木村宏; 山崎智也; 渡部直樹; 香内晃; STURM Saso; VELU Nirmal Kuma; 竹内伸介; 松原英雄; 稲富裕光, 日本惑星科学会秋季講演会予稿集(Web), 2018, 2018
• 国際宇宙ステーション「きぼう」利用 簡易曝露実験装置ExHAMを利用した炭素質ダストの宇宙曝露実験(3)
  左近樹; 尾中敬; 木村誠二; 木村勇気; 中村正人; 市村淳; 小川奈々子; 大河内直彦; 稲富裕光; 和田節子, 日本天文学会年会講演予稿集, 2017, 2017
• The Effect of Exposure of Carbonaceous Dust Samples to the Space Environment
  左近樹; 池内綾人; 遠藤いずみ; 尾中敬; 木村勇気; 木村誠二; 中村正人; 市村淳; 稲富裕光; 小川奈々子; 大河内直彦; 薮田ひかる; 和田節子, 宇宙科学技術連合講演会講演集(CD-ROM), 61st, 2017
• Elucidating the early processes of cosmic dust formation based on microgravity experiments using aircrafts
  Kimura Yuki; Ishizuka Shinnosuke; Sturm Saso; Tanaka Kyoko K.; Yamazaki Tomoya; Saito Fumiaki; Satoh Yosuke; Inatomi Yuko, 宇宙環境利用シンポジウム 第31回： 平成28年度 = Space Utilization Research, Vol. 31 2016: Proceedings of The Thirty-first Space Utilization Sysmposium, 31, Jan. 2017
  Space Utilization Research (January 16-17, 2017. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS), Japanese
• QCCプロジェクト進捗報告 : 曝露実験試料の現状—Latest Progress Report on the QCC Project : Status of Exposure Experiment Samples
  左近 樹; 尾中 敬; 木村 勇気; 木村 誠二; 中村 正人; 市村 淳; 稲富 裕光; 小川 奈々子; 大河内 直彦; 和田 節子, 宇宙科学技術連合講演会講演集, 60, 4p, Sep. 2016
  日本航空宇宙学会, Japanese
• Nucleation experiment of alumina and silica from vapor phase using the sounding rocket S-520-30
  KIMURA Yuki; ISHIZUKA Shinnosuke; YAMAZAKI Tomoya; TANAKA Kyoko; TAKEUCHI Shinsuke; INATOMI Yuko, 日本地球惑星科学連合大会予稿集(Web), 2016, 2016
• In-situ IR measurement in homogeneous nucleation process of alumina under μG environment
  ISHIZUKA Shinnosuke; KIMURA Yuki; YAMAZAKI Tomoya; SAKON Itsuki; INATOMI Yuko, 日本地球惑星科学連合大会予稿集(Web), 2016, 2016
• 国際宇宙ステーション「きぼう」利用簡易曝露実験装置ExHAMを利用した炭素質ダストの宇宙環境曝露実験(2)
  左近樹; 尾中敬; 木村誠二; 木村勇気; 中村正人; 市村淳; 小川奈々子; 大河内直彦; 稲富裕光; 和田節子, 日本天文学会年会講演予稿集, 2016, 2016
• QCCプロジェクト進捗報告~曝露実験試料の現状
  左近樹; 尾中敬; 木村勇気; 木村誠二; 中村正人; 市村淳; 稲富裕光; 小川奈々子; 大河内直彦; 和田節子, 宇宙科学技術連合講演会講演集(CD-ROM), 60th, 2016
• Microgravity experiments using S-520 sounding rockets to elucidate formation process of cosmic dust
  Kimura Yuki; Ishizuka Shinnosuke; Nakatsubo Shunichi; Saito Fumiaki; Yamazaki Tomoya; Sakon Itsuki; Takeuchi Shinsuke; Inatomi Yuko, 第16回宇宙科学シンポジウム 講演集 = Proceedings of the 16th Space Science Symposium, Jan. 2016
  16th Space Science Symposium (January 6-7, 2016. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)Sagamihara Campus), Sagamihara, Kanagawa Japan, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS), Japanese
• Reproduction experiment of cosmic dust particles using the Sounding rocket S-520-30
  Kimura Yuki; Ishizuka Shinnosuke; Nakatsubo Shunichi; Saito Fumiaki; Yamazaki Tomoya; Sakon Itsuki; Takeuchi Shinsuke; Inatomi Yuko, 宇宙環境利用シンポジウム 第30回： 平成27年度 = Space Utilization Research, Vol. 30 2015: Proceedings of The Thirtieth Space Utilization Symposium, 30, Jan. 2016
  Space Utilization Research (January 19-20, 2016. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS), Japanese
• Account of "32nd Grain Formation Workshop"
  Kimura Y; Tanaka K. K; Honda M; Sakon I; Miura H, Planetary People - The Japanese Society for Planetary Sciences, 25, 1, 21, 23, 2016
  The Japanese Society for Planetary Sciences, Japanese
• 低温光化学反応による分子雲での有機物形成・進化
  Piani Laurette; 橘 省吾; 羽馬 哲也; 菅原 いよ; 大場 康弘; 田中 秀和; 木村 勇気; 三宅 亮; 松 野 淳也; 土山 明; 圦本 尚義; 香内 晃, 日本地球惑星科学連合2016年大会, 2016
• Experimental results of sounding rocket S-520-30 and future plan
  Kimura Yuki; Ishizuka Shinnosuke; Nakatsubo Shunichi; Sakon Itsuki; Takeuchi Shinsuke; Inatomi Yuko, 大気球シンポジウム: 平成27年度 = Balloon Symposium: 2015, Nov. 2015
  Balloon Symposium 2015 (November 5-6, 2015. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS), Japanese
• PHOTOCHEMISTRY IN MOLECULAR CLOUDS: STRUCTURE AND PHYSICAL PROPERTIES OF ORGANIC RESIDUES AND ICE AND SUBLIMATION OF VOLATILE MOLECULES.
  S. Tachibana; L. Piani; L. Dessimoulie; T. Hama; Y. Kimura; Y. Endo; K. Fujita; S. Nakatsubo; H. Fukushi; S. Mori; T. Chigai; H. Yurimoto; A. Kouchi, METEORITICS & PLANETARY SCIENCE, 50, Aug. 2015
  English, Summary international conference
• Report on the 31st Grain Formation Workshop
  Honda M.; Sakon I.; Kimura Y.; Miura H.; Shimonishi T., Planetary People, 24, 1, 60, 62, Mar. 2015
  The Japanese Society for Planetary Sciences, Japanese
• ISS「きぼう」日本実験棟ExHAMを利用したダストの宇宙曝露実験計画
  左近樹; 尾中敬; 木村誠二; 和田節子; 木村勇気; 中村正人; 市村淳; 小川奈々子; 大河内直彦; 稲富裕光; 佐藤一輝; 島本早也佳; 渡辺英幸; 赤城弘樹; 佐巻義昭, 日本天文学会年会講演予稿集, 2015, 2015
• 国際宇宙ステーション「きぼう」利用簡易曝露実験装置ExHAMを利用した炭素質ダストの宇宙環境曝露実験
  左近樹; 尾中敬; 木村誠二; 和田節子; 木村勇気; 中村正人; 市村淳; 小川奈々子; 大河内直彦; 稲富裕光; 渡辺英幸; 赤城弘樹; 杉紀夫, 日本天文学会年会講演予稿集, 2015, 2015
• 炭素質ナノ粒子の宇宙風化と星間有機物進化の実証研究
  左近樹; 尾中敬; 木村勇気; 木村誠二; 中村正人; 市村淳; 稲富裕光; 小川奈々子; 大河内直彦; 渡辺英幸; 赤城弘樹; 杉紀夫; 和田節子, 宇宙科学技術連合講演会講演集(CD-ROM), 59th, 2015
• 様々な手法を用いた非晶質珪酸塩薄膜の生成実験
  土`山明; 三宅亮; 羽馬哲也; 橘省吾; 寺崎英紀; 近藤忠; 安達裕; 日高宏; 渡部直樹; 木村勇気; 香内晃, 日本鉱物科学会2015年年会, 2015
• P1-38 浮遊法による全溶融した放射状輝石コンドリュールの再現実験(ポスターセッション1,ポスター発表)
  野村 逸郎; 中村 智樹; 木村 勇気; 塚本 勝男, 日本惑星科学会秋期講演会予稿集, 2014, "P1, 38", 10 Sep. 2014
  日本惑星科学会, Japanese
• O10-03 タギシュレイク隕石中に見られるフランボイダルマグネタイトの形成過程(口頭発表セッション10 隕石・実験,口頭発表)
  木村 勇気; 佐藤 岳志; 中村 智樹; 中村 教博; 野澤 純; 塚本 勝男; 山本 和生, 日本惑星科学会秋期講演会予稿集, 2014, "O10, 03", 10 Sep. 2014
  日本惑星科学会, Japanese
• 観測ロケットS‐520‐28号機を用いた微小重力実験
  稲富裕光; 木村勇気; 塚本勝男; 竹内伸介; 石井信明, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 60th, ROMBUNNO.29P-B6-2, 11 Mar. 2013
  Japanese
• 観測ロケットS-520-28号機を用いた微小重力環境での鉄の均質核生成実験
  木村勇気; 田中今日子; 竹内伸介; 塚本勝男; 三浦均; 稲富裕光, 結晶成長国内会議予稿集(CD-ROM), 43rd, 2013
• 観測ロケットS‐520‐28号機を用いた微小重力環境での鉄の均質核生成実験
  木村勇気; 田中今日子; 竹内伸介; 塚本勝男; 三浦均; 稲富裕光, 結晶成長国内会議予稿集(CD-ROM), 43rd, ROMBUNNO.08AC06, 2013
  Japanese
• NaClO₃溶液成長におけるアキラルな準安定相を介したキラル結晶形成過程
  新家寛正; 原田俊太; 宇治原徹; 三浦均; 木村勇気; 栗林貴弘; 上羽牧夫; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 43rd, ROMBUNNO.08AC11, 2013
  Japanese
• 観測ロケット“S‐520‐28号機”を用いた微小重力実験から探る鉄微粒子の生成過程
  木村勇気; 田中今日子; 塚本勝男; 竹内伸介; 稲富裕光, 日本惑星科学会秋季講演会予稿集, 2013, 106, 2013
  Japanese
• 結晶成長過程の解明に向けた三次元干渉計の開発と応用
  村山健太; 塚本勝男; 木村勇気, 結晶成長国内会議予稿集(CD-ROM), 43rd, ROMBUNNO.06PB02, 2013
  Japanese
• NaClO₃溶液成長におけるアキラルな準安定相の溶解度測定
  新家寛正; 原田俊太; 宇治原徹; 三浦均; 木村勇気; 上羽牧夫; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 43rd, ROMBUNNO.07PS29, 2013
  Japanese
• Acceleration and inhibition effects of phosphate on phase transformation of amorphous calcium carbonate into vaterite
  Yuki Sugiura; Kazuo Onuma; Yuki Kimura; Katsuo Tsukamoto; Atsushi Yamazaki, AMERICAN MINERALOGIST, 98, 1, 262, 270, Jan. 2013
  English
• Simultaneous Determination of Surface Free Energy and Sticking Probability of Nanoparticles Formed under Highly Supersaturated Environments and Importance of Microgravity Experiments
  KIMURA Yuki; NOZAWA Takaya; TANAKA Kyoko K; MIURA Hitoshi; MAKI Takao; TSUKAMOTO Katsuo; SAKON Itsuki; INATOMI Yuko, JASMA : Journal of the Japan Society of Microgravity Application, 29, 4, 184, 189, 31 Oct. 2012
  Japanese
• O8-03 ダスト生成に重要な吸着係数と表面自由エネルギーの同時決定(口頭発表セッション8(室内実験II,惑星形成論I),口頭発表)
  木村 勇気; 田中 今日子; 三浦 均; 塚本 勝男; 稲富 裕光, 日本惑星科学会秋期講演会予稿集, 2012, 24 Oct. 2012
  日本惑星科学会, Japanese
• THE MECHANISM OF SURFACE DIFFUSION OF H AND D ATOMS ON AMORPHOUS SOLID WATER: EXISTENCE OF VARIOUS POTENTIAL SITES
  Tetsuya Hama; Kazuaki Kuwahata; Naoki Watanabe; Akira Kouchi; Yuki Kimura; Takeshi Chigai; Valerio Pirronello, ASTROPHYSICAL JOURNAL, 757, 2, 185, 196, Oct. 2012
  English
• Direct Observation of the Homogeneous Nucleation of Manganese in the Vapor Phase and Determination of Surface Free Energy and Sticking Coefficient
  Y. Kimura; K. K. Tanaka; H. Miura; K. Tsukamoto, CRYSTAL GROWTH & DESIGN, 12, 6, 3278, 3284, Jun. 2012
  English
• Cathodoluminescence microcharacterization of forsterite in the chondrule experimentally grown under super cooling
  A. Gucsik; K. Tsukamoto; H. Nishido; H. Miura; M. Kayama; K. Ninagawa; Y. Kimura, JOURNAL OF LUMINESCENCE, 132, 4, 1041, 1047, Apr. 2012
  English
• S‐520観測ロケットを用いた宇宙ダストの核生成実験にむけて:WG初年度活動報告
  木村勇気; 稲富裕光; 三浦均; 田中今日子; 左近樹; 野沢貴也; 中村智樹; 塚本勝男, 宇宙利用シンポジウム, 28th, 23, 25, Mar. 2012
  Japanese
• Simultaneous Determination of Surface Free Energy and Sticking Probability of Nanoparticles Formed under Highly Supersaturated Environments and Importance of Microgravity Experiments
  木村勇気; 野沢貴也; 田中今日子; 三浦均; 真木孝雄; 塚本勝男; 左近樹; 稲富裕光, 日本マイクログラビティ応用学会誌(Web), 29, 4, 2012
• 炭酸水中におけるCa(OH)₂/CaCO₃のdissolution/precipitation反応の“その場”観察
  大島嘉文; 三浦均; 木村勇気; 佐藤久夫; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 42nd, ROMBUNNO.09PD03, 2012
  Japanese
• 針状アラゴナイト結晶の成長メカニズム
  小隅誠司; 塚本勝男; 木村勇気; 三浦均, 結晶成長国内会議予稿集(CD-ROM), 42nd, ROMBUNNO.10PS22, 2012
  Japanese
• バテライト形成過程における結晶質の前駆体
  杉浦悠紀; 小沼一雄; 木村勇気; 門馬綱一; 塚本勝男; 山崎淳司, 結晶成長国内会議予稿集(CD-ROM), 42nd, ROMBUNNO.10AD09, 2012
  Japanese
• In-situ observation of cosmic dust formation toward micgrogravity experiment
  Yuki Kimura; Yuko Inatomi; Kyoko K. Tanaka; Takao Maki; Hitoshi Miura; Itsuki Sakon; Takaya Nozawa; Katsuo Tsukamoto, Journal of the Japanese Association for Crystal Growth, 39, 68, 74, 2012
• Morphological evolution of precipitates during transformation of amorphous calcium phosphate into octacalcium phosphate in relation to role of intermediate phase
  Yuki Sugiura; Kazuo Onuma; Yuki Kimura; Hitoshi Miura; Katsuo Tsukamoto, JOURNAL OF CRYSTAL GROWTH, 332, 1, 58, 67, Oct. 2011
  English
• 22aJB-1 In-situ observation of homogeneous nucleation in vapor phase using double wavelength interferometry
  Kimura Y; Tanaka K. K; Miura H; Inatomi Y; Tsukamoto K, Meeting abstracts of the Physical Society of Japan, 66, 2, 909, 909, 24 Aug. 2011
  The Physical Society of Japan (JPS), Japanese
• 光ピンセットを利用したコロイド結晶の核形成制御
  仙波稔己; 三浦均; 木村勇気; 塚本勝男, コロイドおよび界面化学討論会講演要旨集, 63rd, 509, 22 Aug. 2011
  Japanese
• CATHODOLUMINESCENCE PROPERTIES OF THE FORSTERITE FORMED UNDER SUPER COOLING: AN IMPLICATION FOR METEORITICS
  A. Gucsik; K. Tsukamoto; Y. Kimura; H. Miura; H. Nishido; M. Kayama; K. Ninagawa; Y. Endo, METEORITICS & PLANETARY SCIENCE, 46, A84, A84, Jul. 2011
  English, Summary international conference
• 28aRA-12 Diffusion mechanism of hydrogen atoms adsorbed on water ice at low temperature
  Hama Tetsuya; Watanabe Naoki; Kouchi Akira; Kimura Yuki; Pirronello V., Meeting abstracts of the Physical Society of Japan, 66, 1, 220, 220, 03 Mar. 2011
  The Physical Society of Japan (JPS), Japanese
• 宇宙ダスト生成過程の解明に向けた気相からの均質核形成のその場観察実験
  木村勇気; 田中今日子; 三浦均; 塚本勝男; 稲富裕光, 宇宙利用シンポジウム, 27th, 47, 50, Mar. 2011
  Japanese
• Interferometric in-situ observation during nucleation and growth of WO3 nanocrystals in vapor phase
  Yuki Kimura; Hitoshi Miura; Katsuo Tsukamoto; Chaorong Li; Takao Maki, JOURNAL OF CRYSTAL GROWTH, 316, 1, 196, 200, Feb. 2011
  English
• Double wavelength interferometry for direct observation of homogeneous nucleation in vapor phase
  Yuki Kimura; Yuko Inatomi; Hitoshi Miura; Takao Maki; Katsuo Tsukamoto, ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 67, C117, C117, 2011
  English, Summary international conference
• アラゴナイト形成過程原子分解能その場観察
  荒木優希; 木村勇気; 塚本勝男; 高木良介; 宮下知幸; 大藪範昭; 小林圭; 山田啓文, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.03AC08, 2011
  Japanese
• 隕石中のマグネタイトコロイド結晶
  野澤純; 塚本勝男; 木村勇気; 三浦均, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.04AA04, 2011
  Japanese
• リン酸第8カルシウム(OCP)モルフォロジー形成時における中間相の役割
  杉浦悠紀; 小沼一雄; 木村勇気; 三浦均; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.05AA01, 2011
  Japanese
• TEMを用いた液中“その場”観察:塩素酸ナトリウムの核生成
  木村勇気; 新家寛正; 三浦均; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.03AC05, 2011
  Japanese
• 光ピンセットを利用した二次元コロイド結晶の核形成制御
  仙波稔己; 三浦均; 木村勇気; 石川正道; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.03AC02, 2011
  Japanese
• 二酸化炭素固定化に向けた水酸化カルシウム結晶の面溶解・成長速度測定
  大島嘉文; 三浦均; 木村勇気; 佐藤久夫; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.03AC06, 2011
  Japanese
• 金平糖の角(つの)の数
  塚本勝男; 三浦均; 木村勇気; 伊藤正憲; 佐藤久夫, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.03AC10, 2011
  Japanese
• JEM内での溶液からの結晶成長“その場”観察用セル
  山崎智也; 三浦均; 木村勇気; 吉崎泉; 福山誠二郎; 真木孝雄; 塚本勝男, 結晶成長国内会議予稿集(CD-ROM), 41st, ROMBUNNO.03AC09, 2011
  Japanese
• Magnetite 3-D Colloidal Crystals Formed in the Early Solar System 4.6 Billion Years Ago
  J. Nozawa; K. Tsukamoto; W. J; P. Enckevort; T. Nakamura; Y. Kimura; H. Miura; H. Satoh; K. Nagashima; M. Konoto, Journal of the American Chemical Society, 133, 8782, 8785, 2011
• Interferometric observation of temperature distributions in the smoke experiment
  Y. Kimura; K. Tsukamoto, J. Jpn. Soc. Microgravity Appl, 2011
• Calcite(100)面におけるOCPエピタキシャル成長
  杉浦悠紀; 木村勇気; 三浦均; 小沼一雄; 塚本勝男, 無機リン化学討論会講演予稿集, 20th, 94, 95, 07 Oct. 2010
  Japanese
• ナノ粒子に現れる準安定相
  木村勇気; 塚本勝男, 日本物理学会講演概要集, 65, 2, 330, 18 Aug. 2010
  Japanese
• 24pWG-7 Metastable phase appearing in nanoparticles
  Kimura Yuki; Tsukamoto Katsuo, Meeting abstracts of the Physical Society of Japan, 65, 2, 330, 330, 18 Aug. 2010
  The Physical Society of Japan (JPS), Japanese
• 24pWG-7 Metastable phase appearing in nanoparticles(Symposium on nucleation of metastable crystal)
  Kimura Yuki; Tsukamoto Katsuo, Meeting abstracts of the Physical Society of Japan, 65, 2, 867, 867, 18 Aug. 2010
  The Physical Society of Japan (JPS), Japanese
• CONDENSATION TAKES PLACE IN FAR FROM EQUILIBRIUM CONDITION
  Y. Kimura; K. Tsukamoto; T. Maki, METEORITICS & PLANETARY SCIENCE, 45, A104, A104, Jul. 2010
  English, Summary international conference
• DIRECT MEASUREMENTS OF HYDROGEN ATOM DIFFUSION AND THE SPIN TEMPERATURE OF NASCENT H-2 MOLECULE ON AMORPHOUS SOLID WATER
  Naoki Watanabe; Yuki Kimura; Akira Kouchi; Takeshi Chigai; Tetsuya Hama; Valerio Pirronello, ASTROPHYSICAL JOURNAL LETTERS, 714, 2, L233, L237, May 2010
  English
• THE FORMATION OF GRAPHITE WHISKERS IN THE PRIMITIVE SOLAR NEBULA
  Joseph A. Nuth; Yuki Kimura; Christopher Lucas; Frank Ferguson; Natasha M. Johnson, ASTROPHYSICAL JOURNAL LETTERS, 710, 1, L98, L101, Feb. 2010
  English
• Formation of polycyclic aromatic hydrocarbon grains using anthracene and their stability under UV irradiation
  Midori Saito; Itsuki Sakon; Chihiro Kaito; Yuki Kimura, EARTH PLANETS AND SPACE, 62, 1, 81, 90, 2010
  English
• Laboratory annealing experiments of refractory silicate grain analogs using differential scanning calorimetry
  Y. Kimura; J. A. Nuth III; C. Kaito, Meteoritics & Planetary Science, 46, 92, 102, 2010
• Synthesis of stacked-cup carbon nanotubes in a metal free low temperature system
  Y. Kimura; J. A. Nuth III; N. M. Johnson; K. D. Farmer; K. P. Roberts; S. R. Hussaini, Nanoscience and Nanotechnology Letters, 3, 1, 7, 2010
• AFM study on surface nanotopography of matrix olivines in Allende carbonaceous chondrite
  Jun Nozawa; Katsuo Tsukamoto; Hidekazu Kobatake; Junya Yamada; Hisao Satoh; Ken Nagashima; Hitoshi Miura; Yuki Kimura, ICARUS, 204, 2, 681, 686, Dec. 2009
  English
• ORIGIN OF ORGANIC GLOBULES IN METEORITES: LABORATORY SIMULATION USING AROMATIC HYDROCARBONS
  Midori Saito; Yuki Kimura, ASTROPHYSICAL JOURNAL LETTERS, 703, 2, L147, L151, Oct. 2009
  English
• 27pZB-7 Diffusion and desorption of hydrogen atoms on amorphous solid water at very low temperatures
  Watanabe Naoki; Kouchi Akira; Kimura Yuki, Meeting abstracts of the Physical Society of Japan, 64, 2, 96, 96, 18 Aug. 2009
  The Physical Society of Japan (JPS), Japanese
• 隕石中のマグネタイトのコロイド結晶
  野澤純; 塚本勝男; 木村勇気; 甲野藤真, 日本物理学会講演概要集, 64, 2, 297, 297, 18 Aug. 2009
  The Physical Society of Japan (JPS), Japanese
• 28aYH-5 Magnetite colloidal crystals in the meteorite
  野澤 純; 塚本 勝男; 木村 勇気; 甲野藤 真, Meeting abstracts of the Physical Society of Japan, 64, 2, 297, 297, 18 Aug. 2009
  The Physical Society of Japan (JPS), Japanese
• Colloidal crystallization of magnetite particles in the meteorite
  NOZAWA JUN; TSUKAMOTO KATSUO; KONOTO MAKOTO; KIMURA YUKI, 結晶成長国内会議予稿集, 39th, 186, 2009
  Japanese
• 46億年昔の宇宙空間での結晶化
  木村勇気; 三浦均; 塚本勝男, 日本マイクログラビティ応用学会誌, 2009
• Laboratory Simulation using Aromatic Hydrocarbons
  M. Saito; Y. Kimura, The Astrophysical Journal Letters, 703, L147-L151, 2009
• Experimental demonstration of condensation of Mg-bearing silicate grains around evolved stars
  Y. Kimura; S. Sasaki; H. Suzuki; A. Kumamoto; M. Saito; C. Kaito, ASTROPHYSICAL JOURNAL, 684, 2, 1496, 1501, Sep. 2008
  English
• Morphological alteration and structure of ZnO particles produced in electric field
  Chihiro Kaito; Yasuhiko Kinuta; Hitoshi Suzuki; Syunsuke Adachi; Akihito Kumamoto; Yoshio Saito; Yuki Kimura, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 77, 9, 094708-1-094708-4, Sep. 2008
  English
• Direct observation of MoO(2) crystal growth from amorphous MoO(3) film
  Kenji Nina; Yuki Kimura; Kaorl Yokoyama; Osamu Kido; Gong Binyo; Chihiro Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 40, 9, 2995, 2998, Aug. 2008
  English
• Structural Alterations of Carbon Particles in Saturated Water Vapor
  Chihiro Kaito; Masayuki Shintaku; Ryuta Sakao; Akihito Kumamoto; Midori Saito; Yuki Kimura; Shinsuke Ohyagi; Shigeru Morikawa; Hiroshi Suzuki, JAPANESE JOURNAL OF APPLIED PHYSICS, 47, 8, 6588, 6591, Aug. 2008
  English
• Characteristic low-temperature crystallization of amorphous Mg-bearing silicate grains under electron irradiation
  Yuki Kimura; Yu Miyazaki; Akihito Kumamoto; Midori Saito; Chihiro Kaito, ASTROPHYSICAL JOURNAL LETTERS, 680, 1, L89, L92, Jun. 2008
  English
• A refractory Ca-SiO-H(2)-O(2) vapor condensation experiment with implications for calciosilica dust transforming to silicate and carbonate minerals
  Frans J. M. Rietmeijer; Aurora Pun; Yuki Kimura; Joseph A. Nuth, ICARUS, 195, 1, 493, 503, May 2008
  English
• Behavior of cosmic dust with the material evolution in the early solar nebula
  Yuki Kimura, The Japanese Society for Planetary Sciences, 17, 62, 68, 2008
• Production of refractory-metal ultrafine particles by gas evaporation method and their surface oxide layer
  Y. Kimura; C. Kaito, Surface and Coatings Technology, 202, 4159, 4162, 2008
• Possible Driving Force behind Formation of Cosmic Carbyne Crystals
  Y. Kimura; C. Kaito, The Astrophysical Journal Letters, 685, 83, 86, 2008
• Structural alteration of nanostructure carbon particles carrying Pt clusters in H-2 and O-2 gases
  Chihiro Kaito; Ryoichi Ono; Ryuta Sakao; Akihito Kuniamoto; Midori Saito; Yuki Kimura; Shinsuke Ohyagi, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 46, 45-49, L1141, L1142, Dec. 2007
  English
• What is the driving force to form refractory oxide grains? Silicate spectra depend on their formation environment
  Yuki Kimura; Joseph A. Nuth, ASTROPHYSICAL JOURNAL, 664, 2, 1253, 1263, Aug. 2007
  English
• Non-mass-dependent oxygen isotopic fractionation in smokes produced in an electrical discharge
  Yuki Kimura; Joseph A. Nuth; Subrata Chakpaborty; Mark H. Thiemens, METEORITICS & PLANETARY SCIENCE, 42, 7-8, 1429, 1439, Jul. 2007
  English
• 19pTG-3 Crystallization of carbonaceous materials in an amornhous carbon film including a metal in various gas environments
  Kimura Yuki; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 62, 1, 889, 889, 28 Feb. 2007
  The Physical Society of Japan (JPS), Japanese
• 19pTG-2 Growth of NiO and stabilized ZrO_2 nanoparticles
  Iyanaga Hideomi; Kumamoto Akihito; Shintaku Masayuki; Kimura Yuki; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 62, 1, 889, 889, 28 Feb. 2007
  The Physical Society of Japan (JPS), Japanese
• 原始太陽系における物質進化に関わる結晶成長
  木村勇気; 墻内千尋, 2007
• Exothermic chemical reactions can drive nonthermal crystallization of amorphous silicate grains
  Chihiro Kaito; Yu Miyazaki; Akihito Kumamoto; Yuki Kimura, Astrophysical Journal, 666, 1, L57, L60, 2007
  Institute of Physics Publishing, English
• Growth of TiO and TiO_2 Smoke Particles from TiC Smoke
  KUMAMOTO Akihito; SHINTAKU Masayuki; KURUMADA Mami; KIMURA Yuki; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 33, 4, 312, 312, 30 Nov. 2006
  TiO and TiO_2 particles were produced from TiC smoke in a gas mixture by the alteration of the partial pressure of O_2. In the case of the partial of 0.075 Torr of oxygen in Argon pressure at 75 Torr, successive growth of TiO_2, TiO and mixture of TiC and TiO have been formed., The Japanese Association for Crystal Growth (JACG), Japanese
• Silicate Grain Formation with Non-Mass Dependent Oxygen Isotopic Fractionation
  KIMURA Yuki; NUTH Joseph A. III; CHAKRABORTY Subrata; THIEMENS Mark H., Journal of the Japanese Association of Crystal Growth, 33, 4, 315, 315, 30 Nov. 2006
  We found that electrical discharge can produce non-mass dependent oxygen isotopic fractionation in refractory oxide grains. So far, only photodissociation has been known to produce non-mass dependent oxygen isotopic fractionation. Our results may provide another possible path, caused by the processing of presolar silicate materials and leading to the non-mass dependent oxygen isotopic fractionation of CAIs and chondrules., The Japanese Association for Crystal Growth (JACG), Japanese
• Electric field effect on the growth of metallic and polar crystal particles
  ADACHI S.; KUMAMOTO A.; SHINTAKU M.; KIMURA Y.; KINUTA Y.; KAITO C., Journal of the Japanese Association of Crystal Growth, 33, 4, 311, 311, 30 Nov. 2006
  Successive to the oxide particle formation in electric field, electric field effects have been elucidated for the metallic and polar particles. Metallic and ZnO particles were curved to the minus plate. The multiple twined particles were observed in ZnO. The emergency of multiple twined particles in Ag also becomes prominent., The Japanese Association for Crystal Growth (JACG), Japanese
• 24pYH-3 Structural alteration of carbon nanoparticle by heating at 80℃ II
  Shintaku M.; Suzuki H.; Kimura Y.; Kido O.; Kurumada M.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 61, 2, 738, 738, 18 Aug. 2006
  The Physical Society of Japan (JPS), Japanese
• 24pYH-6 Growth of silicate grains depends on the formation environments and their infrared spectra
  Kimura Yuki; Nuth III Joseph A., Meeting abstracts of the Physical Society of Japan, 61, 2, 739, 739, 18 Aug. 2006
  The Physical Society of Japan (JPS), Japanese
• 24pYH-12 Lowering of theta-alpha transition temperature by size decreasing of alumina nanoparticles
  Kurumada Mami; Saito Midori; Kimura Yuki; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 61, 2, 740, 740, 18 Aug. 2006
  The Physical Society of Japan (JPS), Japanese
• 24pYH-2 Effect of Electric Field for Growth of Metal and Semimetal Nano-particles
  Adachi S.; Kimura Y.; Kinuta Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 61, 2, 738, 738, 18 Aug. 2006
  The Physical Society of Japan (JPS), Japanese
• Influence of plasma on formation of crystalline Fe2SiO4 grains
  T Sato; M Kurumada; K Kamitsuji; O Kido; H Suzuki; M Shintaku; Y Kimura; Y Saito; C Kaito, PLANETARY AND SPACE SCIENCE, 54, 6, 612, 616, May 2006
  English
• Laboratory analogy of crystalline enstatite grain formation in plasma field
  T Sato; K Kamitsuji; M Shintaku; Y Kimura; M Kurumada; O Kido; H Suzuki; Y Saito; C Kaito, PLANETARY AND SPACE SCIENCE, 54, 6, 617, 620, May 2006
  English
• Formation of TiC core-graphitic mantle grains from CO gas
  Yuki Kimura; Joseph A. Nuth; Frank T. Ferguson, METEORITICS & PLANETARY SCIENCE, 41, 5, 673, 680, May 2006
  English
• Synthesis of Al-Cr decagonal quasicrystal nanoparticles and their temperature of phase transformation to stable crystal phase
  O Kido; M Kurumada; K Kamltsuji; T Tanigaki; T Sato; Y Kimura; H Suzuki; Y Saito; C Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 31, 2, 169, 173, Mar. 2006
  English
• Direct observation of the crystallization of carbon-coated amorphous Mg-bearing silicate grains
  C. Kaito; S. Sasaki; Y. Miyazaki; A. Kumamoto; M. Kurumada; K. Yokoyama; M. Saito; Y. Kimura; H. Suzuki, Advances in Geosciences, 7, 125, 131, 2006
• Formation of CaTiO3 crystalline dust in laboratory
  K. Yokoyama; Y. Kimura; O. Kido; M. Kurumada; A. Kumamoto; C. Kaito, Advances in Geosciences, 7, 115, 123, 2006
• A New method of producing titanium carbide, monoxide, and dioxide grains in laboratory
  A. Kumamoto; M. Kurumada; Y. Kimura; C. Kaito, Advances in Geosciences, 7, 93, 99, 2006
• Laboratory production of magnesium sulfide grains and their characteristic infrared spectra due to shape
  Y Kimura; M Kurumada; K Tamura; C Koike; H Chihara; C Kaito, ASTRONOMY & ASTROPHYSICS, 442, 2, 507, 512, Nov. 2005
  English
• Is the 21 micron feature observed in some post-AGB stars caused by the interaction between Ti atoms and fullerenes?
  Y Kimura; JA Nuth; FT Ferguson, ASTROPHYSICAL JOURNAL, 632, 2, L159, L162, Oct. 2005
  English
• Laboratory production of monophase pyrrhotite grains using solid-solid reaction and their characteristic infrared spectra
  Y Kimura; K Tamura; C Koike; H Chihara; C Kaito, ICARUS, 177, 1, 280, 285, Sep. 2005
  English
• Laboratory synthesized calcium oxide and calcium hydroxide grains: A candidate to explain the 6.8 mu m band
  Y Kimura; JA Nuth, ASTROPHYSICAL JOURNAL, 630, 1, 637, 641, Sep. 2005
  English
• Formation of carbon nanotubes from mixture film of carbon and titanium
  Y Kimura; C Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 28, 3, 281, 285, Aug. 2005
  English
• Direct observation of thermal alteration of mixed film of Ge and SiO
  C Kaito; K Kamitsuji; S Tanaka; O Kido; M Kurumada; T Sato; Y Kimura; H Suzuki; Y Saito, THIN SOLID FILMS, 483, 1-2, 396, 399, Jul. 2005
  English
• Production of diamond and solid-solution nanoparticles in the carbon-silicon system using radio-frequency plasma
  Y Kimura; T Sato; C Kaito, CARBON, 43, 7, 1570, 1574, Jun. 2005
  English, Report scientific journal
• Novel routes for diamond formation in interstellar ices and meteoritic parent bodies
  A Kouchi; H Nakano; Y Kimura; C Kaito, ASTROPHYSICAL JOURNAL, 626, 2, L129, L132, Jun. 2005
  English
• Formation of new carbides with diamond structure from carbon film containing transition metal.
  Y Kimura; C Kaito, THIN SOLID FILMS, 476, 1, 65, 67, Apr. 2005
  English
• Crystal structure and growth of carbon-silicon mixture film prepared by ion sputtering
  Y. Kimura; M. Ishikawa; M. Kurumada; T. Tanigaki; H. Suzuki; C. Kaito, JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E977, E981, Feb. 2005
  English
• Structure of WO3 ultrafine particles and their characteristic solid states
  Mami Kurumada; Osamu Kido; Takeshi Sato; Hitoshi Suzuki; Yuki Kimura; Katsuya Kamitsuji; Yoshio Saito; Chihiro Kaito, JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E1673, E1678, Feb. 2005
  English
• Production of transition metal-doped ZnO nanoparticles by using RF plasma field
  Takeshi Sato; Hitoshi Suzuki; Osamu Kido; Mami Kurumada; Katsuya Kamitsuji; Yuki Kimura; Hiromichi Kawasaki; Satoo Kaneko; Yoshio Saito; Chihiro Kaito, JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E983, E987, Feb. 2005
  English
• Morphological alteration upon phase transition and effects of oxygen impurities of chromium nanoparticles
  Osamu Kido; Katsuya Kamitsuji; Mami Kurumada; Takeshi Sato; Yuki Kimura; Hitoshi Suzuki; Yoshio Saito; Chihiro Kaito, JOURNAL OF CRYSTAL GROWTH, 275, 1-2, E1745, E1750, Feb. 2005
  English
• Crystalline Mg2SiO4 and amorphous Mg-bearing silicate grain formation by coalescence and growth
  K Kamitsuji; H Suzuki; Y Kimura; T Sato; Y Saito; C Kaito, ASTRONOMY & ASTROPHYSICS, 429, 1, 205, 208, Jan. 2005
  English
• Transition temperature to crystal phase of Al86Mn14 quasicrystal ultrafine particles determined by direct observation and characterization of surface oxide layer
  O Kido; H Suzuki; Y Kimura; T Sato; Y Saito; C Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 25, 4, 619, 624, Jan. 2005
  English
• Direct observation of the formation of alumina phase by metallic Al solid-SiO(2) solid reaction
  S Sasaki; H Suzuki; Y Kimura; T Sato; T Tanigaki; O Kido; K Kamitsuji; M Kurumada; C Kaito, EARTH PLANETS AND SPACE, 57, 5, 399, 401, 2005
  English
• Direct observation of the metamorphism of silicon oxide grains
  K Kamitsuji; S Ueno; H Suzuki; Y Kimura; T Sato; T Tanigaki; O Kido; M Kurumada; C Kaito, ASTRONOMY & ASTROPHYSICS, 422, 3, 975, 979, Aug. 2004
  English
• Growth of diamond from Si-containing amorphous carbon film using synchrotron radiation
  Y Kimura; O Kido; M Oomoto; K Ogawa; H Namba; C Kaito, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 43, 7A, L888, L890, Jul. 2004
  English
• Phase transition temperature of gamma-Fe2O3 ultrafine particle
  O Kido; Y Higashino; K Kamitsuji; M Kurumada; T Sato; Y Kimura; H Suzuki; Y Saito; C Kaito, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73, 7, 2014, 2016, Jul. 2004
  English
• Correlations between crystallite size, shape, surface, and infrared spectra using the Ti-C system
  Y Kimura; A Ikegami; M Kurumada; K Kamitsuji; C Kaito, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 152, 2, 297, 301, Jun. 2004
  English
• TEM study of early Ni4Ti3 precipitation and R-phase in Ni-rich NiTi nanoparticles
  M Kurumada; Y Kimura; H Suzuki; O Kido; Y Saito; C Kaito, SCRIPTA MATERIALIA, 50, 11, 1413, 1416, Jun. 2004
  English
• Growth and structure of Ge clusters produced by Ge-C co-evaporation
  S Tanaka; O Kida; M Kurumada; K Kamitsuji; Y Kimura; H Suzuki; Y Saito; C Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 23, 1-2, 108, 113, Jun. 2004
  English
• Pentagonal configuration in GaP ultrafine particle
  T Tanigaki; Y Kimura; H Suzuki; M Kurumada; C Kaito, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 73, 5, 1375, 1376, May 2004
  English
• Novel method of doping tungsten into zinc oxide ultrafine particle using RF plasma system
  T Sato; H Suzuki; O Kido; M Kurumada; K Kamitsuji; Y Kimura; A Takeda; S Kaneko; Y Saito; C Kaito, JOURNAL OF CRYSTAL GROWTH, 265, 1-2, 149, 153, Apr. 2004
  English
• 28pYE-9 Production of diamond nanoparticles by the simultaneous evaporation of C and Si in plasma field
  Kimura Y.; Sato T.; Suzuki H.; Kaito C., Meeting abstracts of the Physical Society of Japan, 59, 1, 920, 920, 03 Mar. 2004
  The Physical Society of Japan (JPS), Japanese
• 28pYE-11 Morphology and structure of WO_3 ultrafine particles and their sublimation process
  Kurumada M; Kido O; Kamitsuji K; Kimura Y; Sato T; Suzuki H; Saito Y; Kaito C, Meeting abstracts of the Physical Society of Japan, 59, 1, 921, 921, 03 Mar. 2004
  The Physical Society of Japan (JPS), Japanese
• 28pYE-12 Forsterite(Mg_2SiO_4) particle formation and crystallization
  Kamitsuji K.; Sato T.; Kimura Y.; Suzuki H.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 59, 1, 921, 921, 03 Mar. 2004
  The Physical Society of Japan (JPS), Japanese
• 28pYE-7 Transition temperature from δ- to α-Cr and the size dependence
  Kido Osamu; Suzuki Hitoshi; Kamitsuji Katsuya; Kurumada Mami; Soto Takeshi; Kimura Yuki; Saito Yoshio; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 59, 1, 920, 920, 03 Mar. 2004
  The Physical Society of Japan (JPS), Japanese
• 28pYE-8 Size control and sublimation process of CdS ultrafine particles
  Kinuta Y.; Suzuki H.; Kodama S.; Kurumada M.; Kido O.; Tanigaki T.; Kimura Y.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 59, 1, 920, 920, 03 Mar. 2004
  The Physical Society of Japan (JPS), Japanese
• 28pYE-10 Solid reaction between Sn-Pb mixed particle and metal
  Shintaku M.; Suzuki H.; Kimura Y.; Tanigaki T.; Kido O.; Sato T.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 59, 1, 921, 921, 03 Mar. 2004
  The Physical Society of Japan (JPS), Japanese
• Production and structural characterization of carbon soot with narrow UV absorption feature
  Y Kimura; T Sato; C Kaito, CARBON, 42, 1, 33, 38, 2004
  English
• Direct observation of sublimation process on a CdTe(111) surface using an ultrafine particle
  T Tanigaki; Y Kimura; H Suzuki; C Kaito, JOURNAL OF CRYSTAL GROWTH, 260, 3-4, 298, 303, Jan. 2004
  English
• Mechanism of copper selenide growth on copper-oxide-selenium system
  Y Ishikawa; O Kido; Y Kimura; M Kurumada; H Suzuki; Y Saito; C Kaito, SURFACE SCIENCE, 548, 1-3, 276, 280, Jan. 2004
  English
• Effect of RF plasma field on the growth of C-60 crystals
  T Sato; O Kido; M Kurumada; Y Kimura; H Suzuki; Y Saito; C Kaito, CARBON, 42, 8-9, 1875, 1877, 2004
  English, Report scientific journal
• Structure and thickness of natural oxide layer on ultrafine particle
  K Tamura; Y Kimura; H Suzuki; O Kido; T Sato; T Tanigaki; M Kurumada; Y Saito; C Kaito, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 42, 12, 7489, 7492, Dec. 2003
  English
• 非晶質シリケイトの高温での挙動の直接観察
  上辻勝也; かい内千尋; 木村勇気; 鈴木仁志; 佐藤岳志; 谷垣俊明; 城戸修; 車田真実; 塚本勝男, 日本岩石鉱物鉱床学会学術講演会講演要旨集, 2003, 144, 28 Sep. 2003
  Japanese
• プラズマ中でのカーボングレインの挙動
  佐藤岳志; 上辻勝也; 木村勇気; 鈴木仁志; 谷垣俊明; 城戸修; 車田真実; かい内千尋; 塚本勝男, 日本岩石鉱物鉱床学会学術講演会講演要旨集, 2003, 143, 28 Sep. 2003
  Japanese
• Dynamic behavior of SiO- and SiO2-coated ZnO ultrafine particles and growth mechanism of Zn2SiO4 crystal
  T Tanigaki; H Suzuki; Y Kimura; O Kido; Y Saito; C Kaito, JOURNAL OF CRYSTAL GROWTH, 256, 3-4, 317, 323, Sep. 2003
  English
• Structural control of silicon oxide particles by oxygen partial pressure in RF plasma
  T Sato; A Takeda; Y Kimura; H Suzuki; Y Saito; C Kaito, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 42, 9A, 5896, 5897, Sep. 2003
  English
• Solid reaction between Sn-Zn mixed particle and metal particle
  Shintaku Masayuki; Suzuki Hitoshi; Kimura Yuki; Sato Takeshi; Kido Osamu; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 58, 2, 767, 767, 15 Aug. 2003
  The Physical Society of Japan (JPS), Japanese
• Transition Temperature from γ-to α-phase on Cr nano-particles
  Kido Osamu; Suzuki Hitoshi; Nakashima Yasuko; Kamitsuji Katsuya; Ikegami Akimi; Kurumada Mami; Sato Takeshi; Kimura Yuki; Saito Yoshio; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 58, 2, 767, 767, 15 Aug. 2003
  The Physical Society of Japan (JPS), Japanese
• Production of BaTiO_3 ultrafine particles and their structures
  Kodama S.; Suzuki H.; Kido O.; Kamitsuji K.; Kurumada M.; Tanigaki T.; Kimura Y.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 58, 2, 768, 768, 15 Aug. 2003
  The Physical Society of Japan (JPS), Japanese
• Production of InN and In_2O_3 ultrafine particles using RF plasma field in gas atmosphere
  Kuga T.; Sato T.; Suzuki H.; Kido O.; Kurumada M.; Kimura Y.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 58, 2, 768, 768, 15 Aug. 2003
  The Physical Society of Japan (JPS), Japanese
• Titanium carbide particles as pre-solar grains
  Y Kimura; C Kaito, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 343, 2, 385, 389, Aug. 2003
  English
• Dynamic behavior of Au cluster on the surface of silicon nanoparticles
  Y Kimura; H Ueno; H Suzuki; T Tanigaki; T Sato; Y Saito; C Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 19, 3, 298, 302, Aug. 2003
  English
• Growth process of TiC clusters from Ti nanoparticles with evaporated carbon layer
  A Ikegami; Y Kimura; H Suzuki; T Sato; T Tanigaki; O Kido; M Kurumada; Y Saito; C Kaito, SURFACE SCIENCE, 540, 2-3, 395, 400, Aug. 2003
  English
• Structure and optical spectrum of ZnO nanoparticles produced in RF plasma
  T Sato; T Tanigaki; H Suzuki; Y Saito; O Kido; Y Kimura; C Kaito; A Takeda; S Kaneko, JOURNAL OF CRYSTAL GROWTH, 255, 3-4, 313, 316, Aug. 2003
  English
• Crystallization of carbon film containing metal atoms by vacuum heating
  KIMURA Y.; TANIGAKI T.; SUZUKI H.; SATO T.; KAITO C., Journal of the Japanese Association of Crystal Growth, 30, 3, 16, 16, 05 Jul. 2003
  Generally, several metals, such as Ni, Fe, Co and Mo, were doped as the catalysis on the production of diamond, fullerene and carbon nanotube. In the present method, heat treated carbon films containing such metale were analyzed based on transmission electron microscope technique. The difference of crystallization by doped metal has been elucidated. Present result will give the development to a wide range of new opportunities for research and applications in the field of nanotechnology., The Japanese Association for Crystal Growth (JACG), Japanese
• Properties and structure studies of R-phase on NiTi shape memory alloy nanoparticle
  KURUMADA Mami; KIMURA Yuki; SUZUKI Hitoshi; KIDO Osamu; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 30, 3, 40, 40, 05 Jul. 2003
  NiTi shape memory alloy nanoparticles were produced by the flash gas evaporation from the 50 at.% Ni-Ti mixture powder. The superlattice image of B2-phase that is called as the characteristic structure of R-phase has been captured by the high resolution electron microscopic image. The core of particle was R-phase and the mantle layer was B2-phase. These particles were heated directly in the electron microscope. It became evidently that R-phase has never changed to B2-phase, although the temperature has been much higher than the bulk's transition temperature. Therefore the R-phase is one of the stable phase at high temperature., The Japanese Association for Crystal Growth (JACG), Japanese
• Forsterite particle formation by coalescence growth of MgO and SiO_2 smoke particles
  KAMITSUJI Katsuya; SUZUKI Hitoshi; KIMURA Yuki; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 30, 3, 34, 34, 05 Jul. 2003
  In order to find the forsterite formation condition of crystalline grain, we achieved the coalescence experiment between MgO and SiO_2 smokes. It was found that foresterite spherical particles with the size of a few hundred nm in diameter were produced by the coalescence between cubic-shaped MgO particles and spherical SiO_2 particles., The Japanese Association for Crystal Growth (JACG), Japanese
• Dynamics of Al clusters on SiO_2 nanoparticles by in situ observation
  SASAKI S.; KIMURA Y.; SAITO Y.; TAKEDA A.; KAITO C., Journal of the Japanese Association of Crystal Growth, 30, 3, 35, 35, 05 Jul. 2003
  In order to clarify the characteristic of nanoparticle, temperature dependence of SiO_2 particle deposited Al clusters have been analyzed by transmission electron microscope. We produced Al clusters deposited SiO_2 nanoparticles. We found that a part of Al clusters changed to ν-Al_2O_3 crystalline phase at 600℃ and SiO_2 nanoparticles started to sublimate as SiO gas at 800℃., The Japanese Association for Crystal Growth (JACG), Japanese
• Structure of Copper Oxide Ultrafine Particles Produced in an Electric Field
  SUZUKI Hitoshi; SATO Takeshi; KIMURA Yuki; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 30, 3, 36, 36, 05 Jul. 2003
  Our developed method to separate oxide ultrafine particles in smoke has been used on the formation of copper oxide particles produced by the evaporation of metallic copper in a mixture gas. Yellow and white spherical particles were gathered on the negative and positive electrode . The yellow particles were crystalline particle of cuprite and paramelaconite. The white particles were amorphous, Since the white particles were gathered on the positive electrode, the oxide is excess oxygen particles. The detail analysis on these white cupper oxide particles is under way., The Japanese Association for Crystal Growth (JACG), Japanese
• Production of TiC nanocrystallites correlation between its size and infrared spectra
  IKEGAMI A.; KIMURA Y.; SUZUKI H.; SAITO Y.; KAITO C., Journal of the Japanese Association of Crystal Growth, 30, 3, 41, 41, 05 Jul. 2003
  Present TiC crystallites with the size of less than 3 nm were shown at 14 μm absorption feature. This 14 μm absorption was hardly seen from the bulk to 50 nm size. The absorption feature at 14 μm was weakening due to the growth of TiC crystallites by the heat treatment. Moreover the absorption intensity was depended on the grain surface, i.e., if the carbide grains were covered with carbon layer as is observed in the meteorite, the absorption peaks were remarkably weakening., The Japanese Association for Crystal Growth (JACG), Japanese
• In situ observation of silicon carbide formation process using electron microscope
  M Ishikawa; Y Kimura; H Suzuki; O Kida; T Tanigaki; T Sato; Y Saito; C Kaito, JOURNAL OF CRYSTAL GROWTH, 254, 1-2, 131, 136, Jun. 2003
  English
• Dynamic behavior of a silicon oxide layer on silicon ultrafine particles
  Y Kimura; H Ueno; H Suzuki; T Sato; T Tanigaki; O Kido; C Kaito; Y Saito, SURFACE REVIEW AND LETTERS, 10, 2-3, 361, 364, Apr. 2003
  English
• Atomic observation of the sublimation process of the Pb (111) surface
  T Tanigaki; H Suzuki; Y Kimura; C Kaito; Y Saito, SURFACE REVIEW AND LETTERS, 10, 2-3, 455, 459, Apr. 2003
  English
• Dynamic process of crystallization of Sb2Se3 from Sb50Se50 amorphous film
  M Kurumada; H Suzuki; Y Kimura; Y Saito; C Kaito, JOURNAL OF CRYSTAL GROWTH, 250, 3-4, 444, 449, Apr. 2003
  English
• High-temperature behavior of an amorphous carbon layer on SiC particles
  Yuki Kimura; Yoshio Saito; Chihiro Kaito, Surface Science, 527, 1-3, L219, L221, 10 Mar. 2003
  English
• Crystallization on mixture film of silicon and carbon
  Kimura Yuki; Ishikawa Manabu; Tanigaki Toshiaki; Suzuki Hitoshi; Saito Yoshio; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 58, 1, 835, 835, 06 Mar. 2003
  The Physical Society of Japan (JPS), Japanese
• Production of ZnO particle produced by flash evaporation in RF plasma
  Sato Takeshi; Tanigaki Toshiaki; Suzuki Hitoshi; Saito Yoshio; Kimura Yuki; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 58, 1, 835, 835, 06 Mar. 2003
  The Physical Society of Japan (JPS), Japanese
• In situ observation of dendrite growth from ZnO whisker
  Suzuki Hitoshi; Tanigaki Toshiaki; Kimura Yuki; Saito Yoshio; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 58, 1, 834, 834, 06 Mar. 2003
  The Physical Society of Japan (JPS), Japanese
• The shapes and structure of the ultrafine particles in Ni-Ti alloy system
  Kurumada M.; Suzuki H.; Kimura Y.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 58, 1, 835, 835, 06 Mar. 2003
  The Physical Society of Japan (JPS), Japanese
• in situ observation of the dynamic behavior of GaP ultra fine particles at high temperature
  Tanigaki Toshiaki; Kimura Yuki; Suzuki Hitoshi; Kido Osamu; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 58, 1, 835, 835, 06 Mar. 2003
  The Physical Society of Japan (JPS), Japanese
• Novel method for the preparation of silicon oxide layer on TiO2 particle and dynamic behavior of silicon oxide layer on TiO2 particle
  Y Atou; H Suzuki; Y Kimura; T Sato; T Tanigaki; Y Saito; C Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 16, 2, 179, 189, Feb. 2003
  English
• Characteristic crystal growth from amorphous WO3 film by vacuum heating
  Y. Kimura; C. Kaito, Journal of Crystal Growth, 250, 3-4, 450, 457, 2003
• Production of nanodiamond from carbon film containing silicon
  Y. Kimura; C. Kaito, Journal of Crystal Growth, 255, 3-4, 282, 285, 2003
• Infrared spectra of ZrC presolar grain analogues
  Y. Kimura; C. Kaito, Astronomy and Astrophysics, 409, 159, 161, 2003
• Characteristic behavior of Bi clusters and growth process to the continuous film
  C Kaito; Y Kimura; S Tominaga; S Kimura; T Nakada; Y Saito, PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 5-6, 1, 7, 2003
  English
• Are TiC grains a carrier of the 21-μm emission band observed around the post-AGB objects?
  T. Chigai; T. Yamamoto; C. Kaito; Y. Kimura, The Astrophysical Journal, 587, 2, 771, 776, 2003
• Demonstration of crystalline forsterite grain formation due to coalescence growth of Mg and SiO smoke particles
  C Kaito; Y Ojima; K Kamitsuri; O Kido; Y Kimura; H Suzuki; T Sato; T Nakada; Y Saito; C Koike, METEORITICS & PLANETARY SCIENCE, 38, 1, 49, 57, Jan. 2003
  English
• Alteration of interstellar organic materials in meteorites' parent bodies: a novel route for diamond formation
  H Nakano; A Kouchi; M Arakawa; Y Kimura; C Kaito; H Ohno; T Hondoh, PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES, 78, 9, 277, 281, Nov. 2002
  English
• Fabrication of an amorphous carbon tube from copper oxide whisker
  H Suzuki; N Fukuzawa; T Tanigaki; T Sato; O Kido; Y Kimura; C Kaito, JOURNAL OF CRYSTAL GROWTH, 244, 2, 168, 172, Oct. 2002
  English
• In-situ Observation of Phase Transition on Quasicrystal Ultrafine Particles in Transmission Electron Microscope
  Kido O.; Suzuki H.; Kimura Y.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 57, 2, 769, 769, 13 Aug. 2002
  The Physical Society of Japan (JPS), Japanese
• High-temperature behavior of PbTe particles
  Kaito C.; Tanigaki T.; kimura Y.; Suzuki H., Meeting abstracts of the Physical Society of Japan, 57, 2, 768, 768, 13 Aug. 2002
  The Physical Society of Japan (JPS), Japanese
• Production of presolar grains and its infrared spectra
  Kimura Yuki; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 57, 2, 768, 768, 13 Aug. 2002
  The Physical Society of Japan (JPS), Japanese
• In-situ observation of TiC production process on solid reaction.
  Ikegami A.; Kimura Y.; Suzuki H.; Saito Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 57, 2, 768, 768, 13 Aug. 2002
  The Physical Society of Japan (JPS), Japanese
• Irradiation effect of synchrotron radiation on crystallization of thin amorphous WO3 film
  Y Kimura; K Hanamoto; Y Nakayama; C Kaito, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 194, 2, 187, 192, Aug. 2002
  English
• Process of crystallization in thin amorphous tin oxide film
  T Kobayashi; Y Kimura; H Suzuki; T Sato; T Tanigaki; Y Saito; C Kaito, JOURNAL OF CRYSTAL GROWTH, 243, 1, 143, 150, Aug. 2002
  English
• Mechanism of spontaneous copper selenide formation
  ISHIKAWA Yohsuke.; KIMURA Yuki; SUZUKI Hitoshi; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 29, 2, 165, 165, 01 Jul. 2002
  Spontaneous copper selenide formation was studied by the use of Cu particles which were partly deposited Se amorphous films. The selenide crystals were formed in both selenium films and Cu particles. If the surface of Cu particles were covered with Cu2O thin layer, the direction of Se atoms was changed by the Cu particle size. In large size (130nm), selenide was formed in both Cu particle and Se film. In small size (40nm), selenide was formed in Cu particle by the diffusion of Se atoms passed through the Cu2O layer., The Japanese Association for Crystal Growth (JACG), Japanese
• Production of carbon grains by RF plasma
  SATO T.; SAITO Y.; KIMURA Y.; SUZUKI H.; KAITO C., Journal of the Japanese Association of Crystal Growth, 29, 2, 159, 159, 01 Jul. 2002
  In order to elucidate the correlation between production of carbon grains and plasma effect, carbon smoke was passed through the plasma field. Characteristic structure changes have been observed by passing through the plasma region., The Japanese Association for Crystal Growth (JACG), Japanese
• In-situ observation of Silicon Carbide formation process by ACCM.
  ISHIKAWA Manabu.; KIMURA Yuki; SUZUKI Hitoshi; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 29, 2, 161, 161, 01 Jul. 2002
  By heating of the silicon core-carbon mantle particles produced by ACCM (Advanced Carbon Coating Method), formation process of α-SiC particles by the solid reaction between carbon and silicon have been observed by the use of electron microscopic heating stage. α-SiC particles were produced at 500℃. The diffusion of silicon into carbon mantle and carbon into silicon crystal has been observed. Two processes on the formation of silicon carbide are discussed as the size effect of silicon particles., The Japanese Association for Crystal Growth (JACG), Japanese
• Production of presolar grains by the gas evaporation method
  KIMURA Yuki; KAITO Chihiro., Journal of the Japanese Association of Crystal Growth, 29, 2, 106, 106, 01 Jul. 2002
  In spite of the increasing interest on the carbide grain formation by the identification as the pre-solar grain, the laboratory experiments on the carbide were hardly achieved. A new attempt has been made for carbide core (SiC, TiC, ZrC etc.)-carbon mantle grains. Using the noble gas evaporation method, we succeeded in producing carbide core-carbon mantle grains with the same size as carbide core of pre-solar grains., The Japanese Association for Crystal Growth (JACG), Japanese
• The structure and growth mechanism of rod shaped Mn ultrafine particles
  KIDO Osamu.; SHINTAKU Masayuki; KIMURA Jun.; KIMURA Yuki; SUZUKI Hitoshi; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 29, 2, 164, 164, 01 Jul. 2002
  Mn ultrafine particles prepared by gas evaporation method consist of mainly α-Mn particles and p-Mn particles, which have the habits of tristetrahedron and rhombic dodecahedron. But the structure of the rod shaped Mn ultrafine particles was unknown. The structure and morphology of this particle have been elucidated on the basis of selected area electron diffraction. The planer defects along to <110> direction have been included predominately for the rod shaped particle., The Japanese Association for Crystal Growth (JACG), Japanese
• Iron silicate formation by coalescence growth of Fe and SiO particles
  KAMITSUJI Katsuya; SAITO Yoshio; SUZUKI Hitoshi; KIMURA Yuki; KAITO Chihiro., Journal of the Japanese Association of Crystal Growth, 29, 2, 107, 107, 01 Jul. 2002
  With the increasing interest of crystalline silicate grains, smoke experiment on the formation of FeSiO_3 grains have been done by the coalescence growth between Fe and SiO particles. In addition to FeSiO_3 crystal grains, FeSi_2 grains were produced even in the present method. FeSi_2 and FeSiO_3 growth have been discussed as the problem of Si and O rich conditions., The Japanese Association for Crystal Growth (JACG), Japanese
• Structure and formation of Ge cluster produced by Ge-C co-evaporation
  TANAKA Shuji; KIMURA Yuki; SUZUKI Hitoshi; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 29, 2, 160, 160, 01 Jul. 2002
  Structures of Ge clusters covered with carbon have been studied by high resolution electron microscopy. The Ge clusters of diamond structure have been produced in carbon particles. Twin or Pentagonal decahedron of germanium with the size of 10nm was produced. The growth process of Ge clusters from the Ge-C mixture film at 500℃ is also shown., The Japanese Association for Crystal Growth (JACG), Japanese
• Growth process of carbyne crystals by synchrotron irradiation
  Yuki Kimura; Chihiro Kaito; Katsumi Hanamoto; Muneo Sasaki; Seiji Kimura; Toshitaka Nakada; Yoshio Saito; Yasuyuki Nakayama, Carbon, 40, 7, 1043, 1050, Jun. 2002
  English
• Effects of SR irradiation on tin-doped indium oxide thin film prepared by rf magnetron sputtering
  M Sasaki; K Hanamoto; Y Kimura; C Kaito; H Miki; Y Nakayama, REVIEW OF SCIENTIFIC INSTRUMENTS, 73, 3, 1384, 1386, Mar. 2002
  English
• Spontaneous mixing of binary alkali halide crystal by successive evaporation
  Y Kimura; Y Saito; T Nakada; C Kaito, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 13, 1, 11, 23, Jan. 2002
  English
• Crystallization and selective growth of amorphous Y-Ba-Cu-O film
  T. Tanigaki; S. Ariumi; H. Suzuki; Y. Kimura; S. Kimura; T. Sato; N. Tsuda; T. Nakada; Y. Saito; C. Kaito, Physics of Low-Dimensional Structures, 11/12, 77, 84, 2002
• Ordered alloy formation by the use of reaction between ultrafine particle and cluster
  T Tsurusako; T Tanigaki; H Suzuki; Y Kimura; T Sato; O Kido; Y Saito; C Kaito, PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 7-8, 77, 86, 2002
  English
• A new-attempt on reduction of ultrafine oxide particles
  H Suzuki; T Tanigaki; T Sato; O Kido; Y Atou; Y Kimura; C Kaito, PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 7-8, 99, 105, 2002
  English
• 放射光表面励起反応を用いた新素材創製の研究
  佐々木宗生; 花元克巳; 木村勇気; かい内千尋; 中山康之, 滋賀県工業技術総合センター研究報告, 15, 46, 49, Aug. 2001
  Japanese
• Effect of SR irradiation on crystallization of amorphous tin oxide film
  Y Kimura; T Kobayashi; K Hanamoto; M Sasaki; S Kimura; T Nakada; Y Nakayama; C Kaito, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1221, 1224, Jul. 2001
  English
• Carbyne formation by synchrotron radiation
  C Kaito; Y Kimura; K Hanamoto; M Sasaki; S Kimura; T Nakada; Y Saito; C Koike; Y Nakayama, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1217, 1220, Jul. 2001
  English
• Effect of SR irradiation on In2O3 film
  K Hanamoto; A Hirai; M Sasaki; Y Kimura; K Miyatani; C Kaito; Y Nakayama, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1213, 1216, Jul. 2001
  English
• Photo-stimulated luminescence of Alkali-borate glasses containing halogen ions
  Ogawa A.; Yamagishi Y.; Kimura Y.; Handa K.; Harami T., Meeting abstracts of the Physical Society of Japan, 56, 1, 853, 853, 09 Mar. 2001
  The Physical Society of Japan (JPS), Japanese
• Crystallization of WO_3 thin film
  Kimura Yuki; Hanamoto Katsumi; Nakada Toshitaka; Nakayama Yasuyuki; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 56, 1, 782, 782, 09 Mar. 2001
  The Physical Society of Japan (JPS), Japanese
• Carbynes Formation by Synchrotron Radiation
  Kimura Y.; Hanamoto K.; Sasaki M.; Kimura S.; Nakada T.; Saito Y.; Koike C.; Nakayama Y.; Kaito C., Meeting abstracts of the Physical Society of Japan, 55, 2, 745, 745, 10 Sep. 2000
  The Physical Society of Japan (JPS), Japanese
• Topotactical growth of indium sulfide by evaporation of metal onto molybdenite
  C Kaito; A Ito; S Kimura; Y Kimura; Y Saito; T Nakada, JOURNAL OF CRYSTAL GROWTH, 218, 2-4, 259, 264, Sep. 2000
  English
• Structure of II-VI semiconductor ultra-fine particles covered with SiO or carbon layer
  TANIGAKI Toshiaki; KIMURA Yuki; KIMURA Seiji; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 27, 1, 171, 171, 01 Jul. 2000
  ZnTe, CdTe, ZnSe and ZnS nanocrystals were prepared by simultaneously evaporation of II-VI compounds and carbon or SiO in Ar gas (80 torr). It has been found that zinc-blende particle covered with oxide or carbon layer has been produced predominantly., The Japanese Association for Crystal Growth (JACG), Japanese
• Crystallization of vacuum evaporated amorphous SnO_2 film
  KOBAYASHI Takahito; KIMURA Yuki; HANAMOTO Katsumi; NAKAYAMA Yasuyuki; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 27, 1, 144, 144, 01 Jul. 2000
  こばやし,たかひと / きむら,ゆき / はなもと,かつみ / なかやま,やすゆき / かいと,ちひろCrystallization process of amorphous tin oxide film have been studied by the heating in vacuum. The crystallization of SR irradiation was also observed. The difference of SR irradiation and the vacuum heating have been discussed on the grown crystal structure., The Japanese Association for Crystal Growth (JACG), Japanese
• Crystallization of WO_3 thin film
  KIMURA Yuki; HANAMOTO Katsumi; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 27, 1, 143, 143, 01 Jul. 2000
  Crystallization of thin amorphous film prepared by vacuum evaporation of WO_3 powder has been done by means of the SR white beam irradiation. The crystallization and crystal structure have been discussed with the results on electron beam irradiation and vacuum heating results., The Japanese Association for Crystal Growth (JACG), Japanese
• Characterization of indium tin oxide film and practical ITO film by electron microscopy
  T Nakao; T Nakada; Y Nakayama; K Miyatani; Y Kimura; Y Saito; C Kaito, THIN SOLID FILMS, 370, 1-2, 155, 162, Jul. 2000
  English
• Formation of carbide particles by the advanced gas evaporation method
  Kimura Yuki; Kimura Seiji; Nakada Toshitaka; Saito Yoshio; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 55, 1, 766, 766, 10 Mar. 2000
  The Physical Society of Japan (JPS), Japanese
• Structure of thin Cr film prepared by the vacuum evaporation method
  C. Kaito; H. Nakamura; S. Kimura; Y. Kimura; T. Nakada; Y. Saito, Thin Solid Films, 359, 2, 283, 287, 31 Jan. 2000
  Elsevier Sequoia SA, English
• Spontaneous Alkali Halide Formation by the Use of KBr-KCl System
  Y. Kimura; Y. Saito; T. Nakada; C. Kaito, Physics of Low-Dimensional Structures, 1/2, L1-L7, 2000
• 24pZ-3 Formation of NaBr layer at the interface of KBr-NaCl system by Successive Evaporation
  Kimura Yuki; Kimura Seiji; Nakada Toshitaka; Saito Yoshio; Kaito Chihiro, Meeting abstracts of the Physical Society of Japan, 54, 2, 796, 796, 03 Sep. 1999
  The Physical Society of Japan (JPS), Japanese
• Spontaneous Growth of Binary Alkali Halide Crystal by Successive Evaporation
  KIMURA Yuki; KIMURA Seiji; NAKADA Toshitaka; SAITO Yoshio; KAITO Chihiro, Journal of the Japanese Association of Crystal Growth, 26, 2, 35, 35, 01 Jul. 1999
  It has been found that KBr-KCl binary alkali halide crystals can be produced at room temperature by successive evaporation of KCl and/or KBr on KBr and/or KCl particles in spite of large particles (200nm). The results on KCl-NaCl, NaCl-NaBr and KBr-NaCl have been shown., The Japanese Association for Crystal Growth (JACG), Japanese
• 30p-N-6 Spontaneous Growth of Binary Alkali Halide Crystal by Successive Evaporation
  Kimura Yuki; Kimura Seiji; Saito Yoshio; Kaito Chihiro; Nakada Toshitaka, Meeting abstracts of the Physical Society of Japan, 54, 1, 94, 94, 15 Mar. 1999
  The Physical Society of Japan (JPS), Japanese
• On the spectral index of amorphous carbon grains in the mid infrared region
  KAITO Chihiro; KIMURA Seiji; SATO Kengo; KIMURA Yuki; OJIMA Yuki; HERRMANN Rudolf; KOIKE Chiyoe, Memoirs of the Research Institute of Science & Engineering, Ritumeikan University, 58, 11, 21, 1999
  Ritsumeikan University, English
• Surface oxide on tin and indium ultrafine particles and their oxidation process
  C Kaito; T Nakao; Y Ato; Y Kimura; S Kimura; T Nakada; Y Saito, PHYSICS OF LOW-DIMENSIONAL STRUCTURES, 12, 53, 60, 1999
  English

• Nanodust in the Solar System: Discoveries and Interpretations (Astrophysics and Space Science Library)
  Ingrid Mann; Nicole Meyer-Vernet; Andrzej Czechowski
  Springer, 11 Jun. 2014, 3642436439, 222

  
• 1.シリーズ現代の天文学 第６巻「星間物質と星形成」
  日本評論社, 2008

• Formation experiments of cosmic dust analogues in microgravity environments
  KIMURA Yuki
  33rd Grain Formation Workshop, 12 Dec. 2016, Japanese, Oral presentation
  [Domestic Conference]
• 航空機を用いた微小重力実験
  木村勇気; 斎藤史明; 佐藤陽亮; 中坪俊一; 石塚紳之介; 山﨑智也
  第22回 低温科学研究所 技術部 技術報告会, 02 Dec. 2016, Japanese, Oral presentation
  [Domestic Conference]
• 鉄ニッケル合金基板を用いた FT 型触媒反応実験
  KIMURA Yuki
  科研費新学術領域 分子進化 第12回ワークショップ, 03 Oct. 2016, Japanese, Oral presentation
  [Domestic Conference]
• In-situ TEM Observation Reveals Early Stages of Crystallization Governed by Singular Phenomena of Nanoparticles
  Yuki Kimura; Tomoya Yamazaki
  The 18th International Conference on Crystal Growth and Epitaxy, 11 Aug. 2016, English, Oral presentation
  [International presentation]
• In-situ observation studies of nucleation and dissolution processes
  KIMURA Yuki
  The 16th International Summer School on Crystal Growth, 02 Aug. 2016, English, Poster presentation
  [International presentation]
• 雪の昇華過程のその場観察と水・氷の均質核生成実験に向けて
  KIMURA Yuki
  低温物質の界面・ナノ現象ワークショップ2016, 13 Jul. 2016, Japanese, Oral presentation
  [Domestic Conference]
• Advanced TEM studies give us new perspectives in water-mineral reactions
  KIMURA Yuki
  International Workshop on Water-mineral Interactions, 04 Jul. 2016, English, Oral presentation
  [International presentation]
• Elucidating the early stages of protein crystallization by TEM
  KIMURA Yuki
  Goldschmidt 2016, 29 Jun. 2016, English, Oral presentation
  [International presentation]
• Temperature dependence of reaction efficiency in the Fischer-Tropsh-type catalytic reaction on an iron substrate
  KIMURA Yuki
  日本地球惑星科学連合2016年大会, 25 May 2016, Japanese, Oral presentation
  [Domestic Conference]
• Nucleation experiment of alumina and silica from vapor phase using the sounding rocket S-520-30
  木村勇気; 石塚紳之介; 山﨑智也; 左近樹; 田中今日子; 竹内伸介; 稲富裕光
  日本地球惑星科学連合2016年大会, 22 May 2016, Japanese, Poster presentation
  [Domestic Conference]
• Nucleation of interstellar dust
  KIMURA Yuki
  International School of Crystallography for Space Sciences, 25 Apr. 2016, English, Invited oral presentation
  [Invited], [International presentation]
• 鉄基板を触媒としたFT 反応の温度依存性
  KIMURA Yuki
  科研費新学術領域 分子進化 第７回ワークショップ, 30 Mar. 2016, Japanese, Oral presentation
  [Domestic Conference]
• 透過電子顕微鏡を用いた溶液からの核生成の“その場”観察
  KIMURA Yuki
  日本物理学会 第71回年次大会, 21 Mar. 2016, Japanese, Oral presentation
  [Domestic Conference]
• Nucleation experiment to understand formation of cosmic dust
  KIMURA Yuki
  Astrophysical Ices in the Lab, 08 Mar. 2016, English, Keynote oral presentation
  [Invited], [International presentation]
• 観測ロケットS-520-30号機を用いた宇宙ダストの再現実験
  木村勇気; 石塚紳之介; 中坪俊一; 斎藤史明; 山﨑智也; 左近樹; 田中今日子; 竹内伸介; 稲富裕光
  第30回宇宙環境利用シンポジウム, 20 Jan. 2016, Japanese, Oral presentation
  [Domestic Conference]
• Microgravity experiments using S-520 sounding rockets to elucidate formation process of cosmic dust
  KIMURA Yuki
  第16回宇宙科学シンポジウム, 07 Jan. 2016, Japanese, Oral presentation
  [Domestic Conference]
• 木村勇気、中坪 俊一、斎藤 史明、石塚 紳之介、山﨑 智也、稲富 裕光
  木村勇気; 中坪 俊一; 斎藤 史明; 石塚 紳之介; 山﨑 智也; 稲富 裕光
  第21回 低温科学研究所 技術部 技術報告会, 11 Dec. 2015, Japanese
  [Domestic Conference]
• Nucleation experiments under microgravity condition
  KIMURA Yuki
  32nd Grain Formation Workshop, 09 Dec. 2015, Japanese
  [Domestic Conference]
• Nucleation from a supersaturated vapor
  Yuki Kimura; Kyoko K. Tanaka; Kouchi Akira; Naoki Watanabe; Shunichi Nakatsubo; Shinnosuke Ishizuka; Yuko Inatomi
  ILTS International Symposium on Low Temperature Science, 01 Dec. 2015, English, Oral presentation
  [International presentation]
• In-situ observation of nucleation from solution phase
  KIMURA Yuki
  Japan-Slovenia Bilateral Symposium of Transmission Electron Microscopy, 25 Nov. 2015, English, Oral presentation
  [International presentation]
• Experimental results of sounding rocket S-520-30 and future plan
  KIMURA Yuki
  大気球シンポジウム, 05 Nov. 2015, Japanese, Oral presentation
  [Domestic Conference]
• ナノ粒子～小さな結晶の不思議な振る舞い～
  木村 勇気
  平成2７年度低温科学研究所公開講座, 02 Nov. 2015, Japanese, Public discourse
  [Invited], [Domestic Conference]
• Homogeneous nucleation experiments reveal formation process of cosmic dust particles
  KIMURA Yuki
  第45回結晶成長国内会議, 21 Oct. 2015, Japanese, Invited oral presentation
  [Invited], [Domestic Conference]
• Nucleation and dissolution processes studied by in-situ observation using transmission electron microscopy
  KIMURA Yuki
  Department lecture of Jozef Stefan Institute, 01 Oct. 2015, English, Public discourse
  [Invited], [International presentation]
• Nucleation processes studied by in-situ observation using transmission electron microscopes
  KIMURA Yuki
  International Discussion Meeting on Crystal Growth (39th Toronkai), 26 Sep. 2015, English, Invited oral presentation
  [Invited], [International presentation]
• Assembling interferometers and in-situ observation of ambient phases and solid-liquid interfaces
  KIMURA Yuki
  International Discussion Meeting on Crystal Growth (39th Toronkai), 25 Sep. 2015, English, Public discourse
  [Invited], [International presentation]
• Gravity Effects on the Formation of Ultrafine Particles by the Gas Evaporation Method
  KIMURA Yuki
  The Joint Conference of 6th International Symposium on Physical Science in Space (ISPS-6) and 10th International Conference on Two-Phase Systems for Space and Ground Applications (ITTW2015), 16 Sep. 2015, English, Oral presentation
  [International presentation]
• Electron Holography Unveiled Formation Process of Extraterrestrial Magnetite
  Yuki Kimura; Kazuo Yamamoto; Takeshi Sato
  Microscopy & Microanalysis, 06 Aug. 2015, English, Invited oral presentation
  [Invited], [International presentation]
• Direct Liquid In Situ TEM Obseration of a Libing Protein Crystal
  KIMURA Yuki
  Microscopy & Microanalysis, 03 Aug. 2015, English, Public discourse
  [Invited], [International presentation]
• Nucleation governing mineral evolution in space
  KIMURA Yuki
  Space Science Colloquium, 22 Jul. 2015, Japanese, Public discourse
  [Invited], [Domestic Conference]
• ナノ粒子の生成過程と溶解過程
  木村 勇気
  低温研セミナー, 25 Jun. 2015, Japanese, Public discourse
  [Invited], [Domestic Conference]
• Reproduction experiment of molecular formation based on Fischer-Tropsh-type catalytic reaction in the early solar nebula
  KIMURA Yuki; YAMAZAKI Tomoya; TSUCHIYAMA Akira; NAGAHARA Hiroko; HAMA Tetsuya; HIDAKA Hiroshi; WATANABE Naoki; KOUCHI Akira
  JPGU meeting 2015, 27 May 2015, Japanese, Oral presentation
  [Domestic Conference]
• TEM observation of dissolution process of sodium chlorate nanocrystals
  KIMURA Yuki; YAMAZAKI Tomoya; SATO Hisao
  JPGU meeting 2015, 27 May 2015, Japanese, Oral presentation
  [Domestic Conference]
• 新星周囲でのダスト形成過程の理解
  左近樹; 酒向重行; 大澤亮; 中村友彦; 下西隆; 宮田隆志; 高橋英則; 島本早也佳; 尾中敬; 野沢貴也; 木村勇気; 小笹隆司; 藤吉拓哉; 植村誠; 新井彰
  日本天文学会年会講演予稿集, 20 Feb. 2014, Japanese
• 酸素に富むAGB星周における高温凝縮ダスト形成過程解明への赤外分光スペクトルその場計測実験
  石塚紳之介; 木村勇気; 中村智樹
  日本天文学会年会講演予稿集, 20 Aug. 2013, Japanese
• 観測ロケットS‐520‐28号機を用いた微小重力実験
  稲富裕光; 木村勇気; 塚本勝男; 竹内伸介; 石井信明
  応用物理学会春季学術講演会講演予稿集(CD-ROM), 11 Mar. 2013, Japanese
• NaClO₃溶液成長におけるアキラルな準安定相の溶解度測定
  新家寛正; 原田俊太; 宇治原徹; 三浦均; 木村勇気; 上羽牧夫; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2013, Japanese
• 結晶成長過程の解明に向けた三次元干渉計の開発と応用
  村山健太; 塚本勝男; 木村勇気
  結晶成長国内会議予稿集(CD-ROM), 2013, Japanese
• 観測ロケット“S‐520‐28号機”を用いた微小重力実験から探る鉄微粒子の生成過程
  木村勇気; 田中今日子; 塚本勝男; 竹内伸介; 稲富裕光
  日本惑星科学会秋季講演会予稿集, 2013, Japanese
• NaClO₃溶液成長におけるアキラルな準安定相を介したキラル結晶形成過程
  新家寛正; 原田俊太; 宇治原徹; 三浦均; 木村勇気; 栗林貴弘; 上羽牧夫; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2013, Japanese
• 観測ロケットS‐520‐28号機を用いた微小重力環境での鉄の均質核生成実験
  木村勇気; 田中今日子; 竹内伸介; 塚本勝男; 三浦均; 稲富裕光
  結晶成長国内会議予稿集(CD-ROM), 2013, Japanese
• 観測ロケットS-520-28号機を用いた微小重力環境における鉄蒸気からの均質核生成実験
  日本地球惑星科学連合2013年大会, 2013, Poster presentation
• Nucleation and growth take into account physical properties of nanoparticles
  The 2013 Collaborative Conference on Crystal Growth (3CG), 2013
• Nucleation experiments of iron dust under microgravity
  Cosmic Dust VI, 2013
• Nucleation experiment in vapor phase under microgravity using the sounding rocket S-520-28
  17th International Conference on Crystal Growth and Epitaxy, 2013
• Nucleation and growth of cosmic nanominerals based on size effects in mesoscale
  17th International Conference on Crystal Growth and Epitaxy, 2013
• Microgravity experiment using the sounding rocket S-520-28 for understanding a formation process of cosmic dust
  3rd International Conference on Crystallogenesis and Mineralogy, 2013
• 観測ロケットS-520-28号機を用いた微小重力環境における鉄蒸気からの均質核生成実験
  日本地球惑星科学連合2013年大会, 2013, Poster presentation
• Nucleation and growth take into account physical properties of nanoparticles
  The 2013 Collaborative Conference on Crystal Growth (3CG), 2013
• Nucleation experiments of iron dust under microgravity
  Cosmic Dust VI, 2013
• Nucleation experiment in vapor phase under microgravity using the sounding rocket S-520-28
  17th International Conference on Crystal Growth and Epitaxy, 2013
• Nucleation and growth of cosmic nanominerals based on size effects in mesoscale
  17th International Conference on Crystal Growth and Epitaxy, 2013
• Microgravity experiment using the sounding rocket S-520-28 for understanding a formation process of cosmic dust
  3rd International Conference on Crystallogenesis and Mineralogy, 2013
• 赤外線継続観測に基づく新星V1280Sco周囲でのダスト形成史(2)
  左近樹; 酒向重行; 大澤亮; 中村友彦; 下西隆; 宮田隆志; 高橋英則; 尾中敬; 野沢貴也; 木村勇気; 小笹隆司; 藤吉拓哉; 植村誠; 新井彰
  日本天文学会年会講演予稿集, 20 Aug. 2012, Japanese
• メゾスコピック領域の物性を考慮した宇宙ダストの結晶成長
  木村勇気
  日本物理学会講演概要集, 05 Mar. 2012, Japanese
• S‐520観測ロケットを用いた宇宙ダストの核生成実験にむけて:WG初年度活動報告
  木村勇気; 稲富裕光; 三浦均; 田中今日子; 左近樹; 野沢貴也; 中村智樹; 塚本勝男
  宇宙利用シンポジウム, Mar. 2012, Japanese
• 赤外線継続観測に基づく新星V1280Sco周囲でのダスト形成史
  左近樹; 酒向重行; 大澤亮; 下西隆; 宮田隆志; 高橋英則; 尾中敬; 野沢貴也; 木村勇気; 小笹隆司; 藤吉拓哉; 植村誠; 新井彰
  日本天文学会年会講演予稿集, 20 Feb. 2012, Japanese
• 微小重力環境利用に向けた宇宙ダスト生成の“その場”観察実験
  木村勇気; 稲富裕光; 田中今日子; 真木孝雄; 三浦均; 左近樹; 野沢貴也; 塚本勝男
  日本結晶成長学会誌, 2012
• バテライト形成過程における結晶質の前駆体
  杉浦悠紀; 小沼一雄; 木村勇気; 門馬綱一; 塚本勝男; 山崎淳司
  結晶成長国内会議予稿集(CD-ROM), 2012, Japanese
• 針状アラゴナイト結晶の成長メカニズム
  小隅誠司; 塚本勝男; 木村勇気; 三浦均
  結晶成長国内会議予稿集(CD-ROM), 2012, Japanese
• 炭酸水中におけるCa(OH)₂/CaCO₃のdissolution/precipitation反応の“その場”観察
  大島嘉文; 三浦均; 木村勇気; 佐藤久夫; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2012, Japanese
• メゾスコピック領域の物性を考慮した宇宙ダストの結晶成長
  日本物理学会2012年春季大会, 2012
• 宇宙ダストを模擬した核生成の“その場”観察実験
  文部科学省 先端研究施設共用イノベーション創出事業ナノテクノロジー・ネットワーク 中部地区ナノテク総合支援：ナノ材料創製加工と先端機器分析 平成23年度成果報告会, 2012
• Formation process of colloidal magnetite in the Tagish Lake meteorite
  Workshop on Minerals-Water-Organics in the Early Solar System, 2012
• 航空機による微小重力環境を利用した核生成の“その場”観察実験
  日本地球惑星科学連合2012年大会, 2012
• 溶液成長における核生成と溶解過程のＴＥＭ中“その場”観察
  日本地球惑星科学連合2012年大会, 2012, Poster presentation
• Simultaneous determination of sticking probability and surface free energy by the homogeneous nucleation experiment
  3rd Workshop of Nucleation Related to Cosmic Dust & its contribution to the organic formation in 4.6 billion years ago, 2012
• Simultaneous determination of surface free energy and sticking probability based on formation experiment of cosmic dust and nucleation theories
  The 5th meeting on Cosmic Dust, 2012
• 宇宙における微粒子生成
  平成24年度東北大通研共同プロジェクト研究会プログラム、微粒子プラズマの応用に関する基礎研究, 2012
• ダスト生成に重要な吸着係数と表面自由エネルギーの同時決定
  日本惑星科学会 2012年秋季講演会, 2012
• In-situ observation of nucleation and growth environment of cosmic dust analogues using an interferogram in laboratory
  Achievements of G-COE Program for Earth and Planetary Dynamics and the Future Perspectives, 2012
• Dual-wavelength interferometric observation of homogeneous nucleation from supercooled vapor under 1G and μG
  9th China-Japan-Korea Workshop on Microgravity Sciences, Asian Microgravity Pre-Symposium, 2012
• メゾスコピック領域の物性を考慮した宇宙ダストの結晶成長
  日本物理学会2012年春季大会, 2012
• 宇宙ダストを模擬した核生成の“その場”観察実験
  文部科学省 先端研究施設共用イノベーション創出事業ナノテクノロジー・ネットワーク 中部地区ナノテク総合支援：ナノ材料創製加工と先端機器分析 平成23年度成果報告会, 2012
• Formation process of colloidal magnetite in the Tagish Lake meteorite
  Workshop on Minerals-Water-Organics in the Early Solar System, 2012
• 航空機による微小重力環境を利用した核生成の“その場”観察実験
  日本地球惑星科学連合2012年大会, 2012
• 溶液成長における核生成と溶解過程のＴＥＭ中“その場”観察
  日本地球惑星科学連合2012年大会, 2012, Poster presentation
• Simultaneous determination of sticking probability and surface free energy by the homogeneous nucleation experiment
  3rd Workshop of Nucleation Related to Cosmic Dust & its contribution to the organic formation in 4.6 billion years ago, 2012
• Simultaneous determination of surface free energy and sticking probability based on formation experiment of cosmic dust and nucleation theories
  The 5th meeting on Cosmic Dust, 2012
• 宇宙における微粒子生成
  平成24年度東北大通研共同プロジェクト研究会プログラム、微粒子プラズマの応用に関する基礎研究, 2012
• ダスト生成に重要な吸着係数と表面自由エネルギーの同時決定
  日本惑星科学会 2012年秋季講演会, 2012
• In-situ observation of nucleation and growth environment of cosmic dust analogues using an interferogram in laboratory
  Achievements of G-COE Program for Earth and Planetary Dynamics and the Future Perspectives, 2012
• Dual-wavelength interferometric observation of homogeneous nucleation from supercooled vapor under 1G and μG
  9th China-Japan-Korea Workshop on Microgravity Sciences, Asian Microgravity Pre-Symposium, 2012
• 二波長干渉計による気相からの均質核生成のその場観察実験
  木村勇気; 田中今日子; 三浦均; 稲富裕光; 塚本勝男
  日本物理学会講演概要集, 24 Aug. 2011, Japanese
• 光ピンセットを利用したコロイド結晶の核形成制御
  仙波稔己; 三浦均; 木村勇気; 塚本勝男
  コロイドおよび界面化学討論会講演要旨集, 22 Aug. 2011, Japanese
• 低温氷表面に吸着した水素原子の拡散メカニズム
  羽馬哲也; 渡部直樹; 香内晃; 木村勇気; PIRRONELLO V
  日本物理学会講演概要集, 03 Mar. 2011, Japanese
• 宇宙ダスト生成過程の解明に向けた気相からの均質核形成のその場観察実験
  木村勇気; 田中今日子; 三浦均; 塚本勝男; 稲富裕光
  宇宙利用シンポジウム, Mar. 2011, Japanese
• JEM内での溶液からの結晶成長“その場”観察用セル
  山崎智也; 三浦均; 木村勇気; 吉崎泉; 福山誠二郎; 真木孝雄; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• 金平糖の角(つの)の数
  塚本勝男; 三浦均; 木村勇気; 伊藤正憲; 佐藤久夫
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• 二酸化炭素固定化に向けた水酸化カルシウム結晶の面溶解・成長速度測定
  大島嘉文; 三浦均; 木村勇気; 佐藤久夫; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• 光ピンセットを利用した二次元コロイド結晶の核形成制御
  仙波稔己; 三浦均; 木村勇気; 石川正道; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• TEMを用いた液中“その場”観察:塩素酸ナトリウムの核生成
  木村勇気; 新家寛正; 三浦均; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• リン酸第8カルシウム(OCP)モルフォロジー形成時における中間相の役割
  杉浦悠紀; 小沼一雄; 木村勇気; 三浦均; 塚本勝男
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• 隕石中のマグネタイトコロイド結晶
  野澤純; 塚本勝男; 木村勇気; 三浦均
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• アラゴナイト形成過程原子分解能その場観察
  荒木優希; 木村勇気; 塚本勝男; 高木良介; 宮下知幸; 大藪範昭; 小林圭; 山田啓文
  結晶成長国内会議予稿集(CD-ROM), 2011, Japanese
• 超高過飽和ガスから生成するダスト類似物の均質核形成と接合成長
  日本地球惑星科学連合2011年大会, 2011
• 高速“その場”観察による気相中でのパルス的均質核形成プロセス
  日本地球惑星科学連合2011年大会, 2011
• Separate process of nucleation, coalescence and growth in vapor phase
  International conference on materials for advanced teqhunologies (ICMAT) Symposium DD: CGCT-5-Fundamentals of Crystallization and Low Dimensional Crystalization, 2011, Poster presentation
• Condensation of Cosmic Dust far from equilibrium condition
  Asia Oceania Geosciences Society 8th Annual Meeting, 2011
• Agreement of experiment and theory in homogeneous nucleation
  74th Annual Meeting of the Meteoritical Society, 2011
• Double Wavelength Interferometry for Direct Observation of Homogeneous Nucleation in Vapor Phase
  XXII Congress and General Assembly International Union of Crystallography (IUCr2011), 2011
• 二波長干渉計による気相からの均質核生成のその場観察実験
  日本物理学会2011年秋季大会, 2011
• Homogeneous nucleation and growth of nanoparticles in vapor phase
  BIT’s 1st Annual World Congress of Nano-Science & Technology, 2011
• TEMを用いた液中“その場”観察：塩素酸ナトリウムの核生成
  第41回結晶成長国内会議, 2011
• Interferometric Direct Observation of Nanocrystal Formation via Homogeneous Nucleation in Vapor Phase
  The 20th Nisshin Engineering Particle Technology International Seminar (NEPTIS-20), Modeling of Nucleation and Growth on Crystallization Processes, 2011
• 超高過飽和ガスから生成するダスト類似物の均質核形成と接合成長
  日本地球惑星科学連合2011年大会, 2011
• 高速“その場”観察による気相中でのパルス的均質核形成プロセス
  日本地球惑星科学連合2011年大会, 2011
• Separate process of nucleation, coalescence and growth in vapor phase
  International conference on materials for advanced teqhunologies (ICMAT) Symposium DD: CGCT-5-Fundamentals of Crystallization and Low Dimensional Crystalization, 2011, Poster presentation
• Condensation of Cosmic Dust far from equilibrium condition
  Asia Oceania Geosciences Society 8th Annual Meeting, 2011
• Agreement of experiment and theory in homogeneous nucleation
  74th Annual Meeting of the Meteoritical Society, 2011
• Double Wavelength Interferometry for Direct Observation of Homogeneous Nucleation in Vapor Phase
  XXII Congress and General Assembly International Union of Crystallography (IUCr2011), 2011
• 二波長干渉計による気相からの均質核生成のその場観察実験
  日本物理学会2011年秋季大会, 2011
• Homogeneous nucleation and growth of nanoparticles in vapor phase
  BIT’s 1st Annual World Congress of Nano-Science & Technology, 2011
• TEMを用いた液中“その場”観察：塩素酸ナトリウムの核生成
  第41回結晶成長国内会議, 2011
• Interferometric Direct Observation of Nanocrystal Formation via Homogeneous Nucleation in Vapor Phase
  The 20th Nisshin Engineering Particle Technology International Seminar (NEPTIS-20), Modeling of Nucleation and Growth on Crystallization Processes, 2011
• Calcite(100)面におけるOCPエピタキシャル成長
  杉浦悠紀; 木村勇気; 三浦均; 小沼一雄; 塚本勝男
  無機リン化学討論会講演予稿集, 07 Oct. 2010, Japanese
• ナノ粒子に現れる準安定相
  木村勇気; 塚本勝男
  日本物理学会講演概要集, 18 Aug. 2010, Japanese
• 水素原子のアモルファス氷表面拡散と水素分子生成
  HAMA Tetsuya; KIMURA Yuki; KOUCHI Akira; WATABE Naoki
  原子衝突研究協会年会講演概要集, 09 Aug. 2010, English
• A terminal of PAH evolution
  215th Meeting of the American Astronomical Society, 2010
• Synthesis of organic hollow globules based on singular phenomena of nanoparticles
  The 41th Lunar and Planetary Science Conference, 2010
• 干渉法を用いたナノ粒子凝縮過程の観察
  日本地球惑星科学連合2010年大会, 2010
• プラズマを用いた宇宙固体微粒子の再現実験
  日本地球惑星科学連合2010年大会, 2010
• Silicate Condensation Experiments in a Hydrogen Dominant Gas and Its Thermal History
  73rd Annual Meeting of the Meteoritical Society, 2010
• Condensation Takes Place in Far from Equilibrium Condition
  73rd Annual Meeting of the Meteoritical Society, 2010, Poster presentation
• Experimental demonstration of a forsterite cycle from evolved stars to the solar system
  The 20th General Meeting of the International Mineralogical Association, 2010
• In-situ observation by interferometer during condensation of smoke particles
  The 20th General Meeting of the International Mineralogical Association, 2010
• A terminal of PAH evolution
  215th Meeting of the American Astronomical Society, 2010
• Synthesis of organic hollow globules based on singular phenomena of nanoparticles
  The 41th Lunar and Planetary Science Conference, 2010
• 干渉法を用いたナノ粒子凝縮過程の観察
  日本地球惑星科学連合2010年大会, 2010
• プラズマを用いた宇宙固体微粒子の再現実験
  日本地球惑星科学連合2010年大会, 2010
• Silicate Condensation Experiments in a Hydrogen Dominant Gas and Its Thermal History
  73rd Annual Meeting of the Meteoritical Society, 2010
• Condensation Takes Place in Far from Equilibrium Condition
  73rd Annual Meeting of the Meteoritical Society, 2010, Poster presentation
• Experimental demonstration of a forsterite cycle from evolved stars to the solar system
  The 20th General Meeting of the International Mineralogical Association, 2010
• In-situ observation by interferometer during condensation of smoke particles
  The 20th General Meeting of the International Mineralogical Association, 2010
• 晩期星周囲でPAHから作られる炭素質粒子
  齊藤碧; 木村勇気
  日本天文学会年会講演予稿集, 20 Aug. 2009, Japanese
• 実験から導かれたシリケイト微粒子の新しい生成過程
  木村勇気; NUTH Joseph A.,III
  日本天文学会年会講演予稿集, 20 Aug. 2009, Japanese
• 低温アモルファス氷表面における水素原子の拡散・脱離
  渡部直樹; 香内晃; 木村勇気
  日本物理学会講演概要集, 18 Aug. 2009, Japanese
• 隕石中のマグネタイトのコロイド結晶
  野澤純; 塚本勝男; 木村勇気; 甲野藤真
  日本物理学会講演概要集, 18 Aug. 2009, Japanese
• Colloidal crystallization of magnetite particles in the meteorite
  NOZAWA JUN; TSUKAMOTO KATSUO; KONOTO MAKOTO; KIMURA YUKI
  結晶成長国内会議予稿集, 2009, Japanese
• Origin of forsterite cosmic dust particles based on vapor phase condensation experiment
  KIMURA YUKI; NUTH JOSEPH A.,III
  結晶成長国内会議予稿集, 2009, Japanese
• 水素原子の表面拡散は速いか？：CO固体表面の場合
  日本地球惑星科学連合2009年大会, 2009
• Crystallization of silicate nanoparticles at lower temperature
  International School of Crystallization, 2009, Poster presentation
• Formation of Magnesium Silicates is Limited around Evolved Stars
  The 214th Meeting of the American Astronomical Society, 2009
• 実験から導かれたシリケイト微粒子の新しい生成過程
  日本天文学会2009年秋季年会, 2009
• ケイ酸塩ダストの新しい生成シナリオ
  日本惑星科学会2009年秋季講演会, 2009
• 晩期星における珪酸塩ダスト生成の再現実験
  第27回Grain Formation Workshop / 平成21年度銀河のダスト研究会, 2009
• 気相実験が示す“かんらん石”宇宙ダスト粒子の起源
  第39回結晶成長国内会議, 2009
• 水素原子の表面拡散は速いか？：CO固体表面の場合
  日本地球惑星科学連合2009年大会, 2009
• Crystallization of silicate nanoparticles at lower temperature
  International School of Crystallization, 2009, Poster presentation
• Formation of Magnesium Silicates is Limited around Evolved Stars
  The 214th Meeting of the American Astronomical Society, 2009
• 実験から導かれたシリケイト微粒子の新しい生成過程
  日本天文学会2009年秋季年会, 2009
• ケイ酸塩ダストの新しい生成シナリオ
  日本惑星科学会2009年秋季講演会, 2009
• 晩期星における珪酸塩ダスト生成の再現実験
  第27回Grain Formation Workshop / 平成21年度銀河のダスト研究会, 2009
• 気相実験が示す“かんらん石”宇宙ダスト粒子の起源
  第39回結晶成長国内会議, 2009
• 晩期星に見られる結晶質シリケイトの生成過程に対する再現実験
  木村勇気; 宮下徹平; 熊本明仁; 齊藤碧; 墻内千尋
  日本天文学会年会講演予稿集, 20 Feb. 2008, Japanese
• 原始太陽系星雲中での物質進化に関わるダストの振る舞い
  木村勇気
  日本惑星科学会秋季講演会予稿集, 2007, Japanese
• Structure of ZrO2 nanoparticles produced by the advanced gas evaporation method
  YANAGA HIDEOMI; KUMAMOTO AKIHITO; KIMURA YUKI; KAITO CHIHIRO
  結晶成長国内会議予稿集, 2007, Japanese
• PAHクラスターの成長に及ぼすプラズマ効果
  齊藤碧; 木村勇気; 墻内千尋
  日本惑星科学会秋季講演会予稿集, 2007, Japanese
• Stricture of thin iron-nickel film produced simultaneous evaporation of iron and nickel and formation condition of tetrataenite phase
  YAMASHITA TEPPEI; KIMURA YUKI; KIDO OSAMU; KUMAMOTO AKIHITO; KAITO CHIHIRO
  結晶成長国内会議予稿集, 2007, Japanese
• Structural alteration of Magnesium particles in a nitrogen plasma
  NIINA KENJI; KUMAMOTO AKIHITO; KIMURA YUKI; KAITO CHIHIRO
  結晶成長国内会議予稿集, 2007, Japanese
• In-situ Observation for formation Process of Al Vacancy Clusters
  KUMAMOTO AKIHITO; KIMURA YUKI; KAITO CHIHIRO; SAITO YOSHIO
  結晶成長国内会議予稿集, 2007, Japanese
• Effects of oxygen gas during a formation of CaS grains in early solar nebula
  YOKOYAMA KAORI; YAMASHITA TEPPEI; KUMAMOTO AKIHITO; KIMURA YUKI; KOIKE CHIYOE; KAITO CHIHIRO
  結晶成長国内会議予稿集, 2007, Japanese
• Electric field effect on the growth of metallic and polar crystal particles
  ADACHI SHUNSUKE; KUMAMOTO AKIHITO; SHINTAKU MASAYUKI; KIMURA YUKI; KINUTA YASUHIKO; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Nov. 2006, Japanese
• Growth of TiO and TiO2 Smoke Particles from TiC Smoke
  KUMAMOTO AKIHITO; SHINTAKU MASAYUKI; KURUMADA MAMI; KIDO OSAMU; KIMURA YUKI; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Nov. 2006, Japanese
• Silicate Grain Formation with Non-Mass Dependent Oxygen Isotopic Fractionation
  KIMURA YUKI; NUTH JOSEPH A; III; CHAKRABORTY SUBRATA; THIEMENS MARK H
  日本結晶成長学会誌, 01 Nov. 2006, Japanese
• 異なる環境下でのシリケイトグレインの合成実験と赤外スペクトル
  木村勇気; NUTH Joseph A.,III
  日本天文学会年会講演予稿集, 20 Aug. 2006, Japanese
• 質量に依存しない酸素同位体分別を示す難揮発性微粒子の生成実験
  木村勇気; NUTH Joseph; A. III; CHAKRABORTY Subrata; THIEMENS Mark H
  日本惑星科学会秋季講演会予稿集, 2006, Japanese
• マグネシウムシリケイトダストの結晶化
  宮崎悠; 木村勇気; 新宅正行; 車田真実; 熊本明仁; 墻内千尋
  日本惑星科学会秋季講演会予稿集, 2006, Japanese
• カーボン‐シリコン系からのナノダイヤモンドの生成
  木村勇気; 佐藤岳志; 墻内千尋
  日本天文学会年会講演予稿集, 2004, Japanese
• C‐Si混合膜からのナノダイヤモンドの成長
  木村勇気; かき内千尋
  日本惑星科学会秋季講演会予稿集, 08 Oct. 2003, Japanese
• TiCナノ微結晶と赤外線吸収スペクトルとの相関
  木村勇気; 池上亜紀美; 鈴木仁志; かき内千尋
  日本惑星科学会秋季講演会予稿集, 08 Oct. 2003, Japanese
• 216.5‐224.5nm減光ピークを示す煤の選択生成,及びピーク位置とグラファイト構造との関係
  木村勇気; 佐藤岳志; かき内千尋
  日本惑星科学会秋季講演会予稿集, 08 Oct. 2003, Japanese
• プラズマ中でのカーボングレインの挙動
  佐藤岳志; 上辻勝也; 木村勇気; 鈴木仁志; 谷垣俊明; 城戸修; 車田真実; かい内千尋; 塚本勝男
  日本岩石鉱物鉱床学会学術講演会講演要旨集, 28 Sep. 2003, Japanese
• 非晶質シリケイトの高温での挙動の直接観察
  上辻勝也; かい内千尋; 木村勇気; 鈴木仁志; 佐藤岳志; 谷垣俊明; 城戸修; 車田真実; 塚本勝男
  日本岩石鉱物鉱床学会学術講演会講演要旨集, 28 Sep. 2003, Japanese
• Structure of Copper Oxide Ultrafine Particles Produced in an Electric Field
  SUZUKI HITOSHI; SATO TAKESHI; KIMURA YUKI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 05 Jul. 2003, Japanese
• Phase transition temperature from Al-Cr quasicrystal to stable crystal phase on nano-particle by direct observation
  KIDO OSAMU; SASAKI SHIN'ICHI; KURUMADA MAMI; SUZUKI HITOSHI; KIMURA YUKI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 05 Jul. 2003, Japanese
• Production of TiC nanocrystallites and corre1ation between its size and infrared spectra
  IKEGAMI AKIMI; KIMURA YUKI; SUZUKI HITOSHI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 05 Jul. 2003, Japanese
• Crystallization of carbon film containing metal atoms by vacuum heating
  KIMURA YUKI; TANIGAKI TOSHIAKI; SUZUKI HITOSHI; SATO TAKESHI; KAITO CHIHIRO
  日本結晶成長学会誌, 05 Jul. 2003, Japanese
• Forsterite particle formation by coalescence growth of MgO and SiO2 smoke particles
  KAMITSUJI KATSUYA; SUZUKI HITOSHI; KIMURA YUKI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 05 Jul. 2003, Japanese
• Dynamics of Al clusters on SiO2 nanoparticles by in situ observation
  SASAKI SHIN'ICHI; KIMURA YUKI; SAITO YOSHIO; TAKEDA ATSUSHI; KAITO CHIHIRO
  日本結晶成長学会誌, 05 Jul. 2003, Japanese
• Properties and structure studies of R-phase on NiTi shape memory alloy nanoparticle
  KURUMADA MAMI; KIMURA YUKI; SUZUKI HITOSHI; KIDO OSAMU; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 05 Jul. 2003, Japanese
• 星間雲での光化学反応によるプレソーラーダイヤモンドの生成
  香内晃; 木村勇気; かい内千尋
  日本惑星科学会秋季講演会予稿集, 02 Oct. 2002, Japanese
• モデル星間有機物の水質・熱変成実験
  中野英之; 香内晃; 荒川政彦; 木村勇気; かい内千尋; 大野浩; 本堂武夫
  日本惑星科学会秋季講演会予稿集, 02 Oct. 2002, Japanese
• ガス中同時蒸発によるSi‐Ti‐C微粒子の作製と赤外スペクトル
  木村勇気; かい内千尋
  日本惑星科学会秋季講演会予稿集, 02 Oct. 2002, Japanese
• 微粒子創製に及ぼすプラズマ効果
  佐藤岳志; 斎藤嘉夫; 木村勇気; 鈴木仁志; かい内千尋
  日本惑星科学会秋季講演会予稿集, 02 Oct. 2002, Japanese
• Iron silicate formation by coalescence growth of Fe and SiO particles.
  KAMITSUJI KATSUYA; SAITO YOSHIO; SUZUKI HITOSHI; KIMURA YUKI; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 2002, Japanese
• Mechanism of spontaneous copper selenide formation.
  ISHIKAWA YOSUKE; KIMURA YUKI; SUZUKI HITOSHI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 2002, Japanese
• Production of presolar grains by the gas evaporation method.
  KIMURA YUKI; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 2002, Japanese
• The structure and growth mechanism of rod shaped Mn ultrafine particles.
  KIDO OSAMU; SHINTAKU MASAYUKI; KIMURA JUN; KIMURA YUKI; SUZUKI HITOSHI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 2002, Japanese
• Production of carbon grains by RF plasma.
  SATO TAKASHI; SAITO YOSHIO; KIMURA YUKI; SUZUKI HITOSHI; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 2002, Japanese
• In-situ observation of Silicon Carbide formation process by ACCM.
  ISHIKAWA MANABU; KIMURA YUKI; SUZUKI HITOSHI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 2002, Japanese
• Structure and formation of Ge cluster produced by Ge-C co-evaporation.
  TANAKA SHUJI; KIMURA YUKI; SUZUKI HITOSHI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 2002, Japanese
• Infrared spectra of TiC, SiC and (Si,Ti)-C grains
  KIMURA YUKI; KAITO CHIHIRO
  日本天文学会年会講演予稿集, 2002, Japanese
• シリコン‐カーボン系における構造とスペクトルの相関
  木村勇気; 中尾智子; 上野洋; 斎藤嘉夫; かき内千尋
  日本惑星科学会秋季講演会予稿集, 06 Oct. 2001, Japanese
• ITO透明導電膜への放射光照射効果
  佐々木宗生; 花元克巳; 木村勇気; 三木秀二郎; 墻内千尋; 中山康之
  応用物理学関係連合講演会講演予稿集, 28 Mar. 2001, Japanese
• 放射光照射による非晶質カーボン膜からのカルビン結晶の生成
  木村勇気; 花本克巳; 佐々木宗生; 木村誠二; 中田俊隆; 斎藤嘉夫; 小池千代枝; 中山康之; しょう内千尋
  日本惑星科学会秋季講演会予稿集, 31 Oct. 2000, Japanese
• Structure of II-VI semiconductor ultra-fine particles covered with SiO or carbon layer.
  TANIGAKI TOSHIAKI; KIMURA YUKI; KIMURA SEIJI; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 26 Jul. 2000, Japanese
• Crystallization of WO3 thin film.
  KIMURA YUKI; HANAMOTO KATSUMI; NAKAYAMA YASUYUKI; KAITO CHIHIRO
  日本結晶成長学会誌, 26 Jul. 2000, Japanese
• Crystallization of vacuum evaporated amorphous SnO2 film.
  KOBAYASHI TAKAHITO; KIMURA YUKI; HANAMOTO KATSUMI; NAKAYAMA YASUYUKI; KAITO CHIHIRO
  日本結晶成長学会誌, 26 Jul. 2000, Japanese
• KBr‐NaCl逐次蒸着膜におけるNaBr層の形成
  木村勇気; 木村誠二; 中田俊隆; 斎藤嘉夫; かい内千尋
  日本物理学会講演概要集, 03 Sep. 1999, Japanese
• Spontaneous Growth of Binary Alkali Halide Crystal by successive Evaporation.
  KIMURA YUKI; KIMURA SEIJI; NAKADA TOSHITAKA; SAITO YOSHIO; KAITO CHIHIRO
  日本結晶成長学会誌, 01 Jul. 1999, Japanese
• KBr‐KCl蒸着膜による二元アルカリハライド化合物
  木村勇気; 木村誠二; 斎藤嘉夫; かい内千尋; 中田俊隆
  日本物理学会講演概要集, 15 Mar. 1999, Japanese
• 有機分子進化におけるFT反応の寄与
  KIMURA Yuki
  新学術領域「宇宙分子進化」全体集会, Japanese, Oral presentation
  [Domestic Conference]

• 宇宙理学入門, 2024年, 修士課程, 理学院

• 2021 - Present
  Microscopy Society of America
• 2016 - Present
  THE JAPAN SOCIETY OF MICROGRAVITY APPLICATION
• 2005 - Present
  アメリカ天文学会
• JAPAN GEOSCIENCE UNION
• 日本天文学会
• 日本物理学会
• 日本惑星科学会
• 結晶成長学会

• 気相からの核形成と宇宙ダスト
  2013 - 2014
• 気相からの核形成と宇宙ダスト
  2013 - 2014
• 気相からの核形成と宇宙ダスト
  2012 - 2013
• 気相からの核形成と宇宙ダスト
  2012 - 2013
• 宇宙の塵（ちり）の不思議なでき方
  2011 - 2012
• 気相からの核形成と宇宙ダスト
  2011 - 2012
• 宇宙の塵（ちり）の不思議なでき方
  2011 - 2012
• 気相からの核形成と宇宙ダスト
  2011 - 2012
• 液体のように振舞う固体：ナノ領域の拡散現象と天文学
  2009 - 2012
• 液体のように振舞う固体：ナノ領域の拡散現象と天文学
  2009 - 2012
• 月面基地建設の為の月資源からの酸素抽出とセメント製造、セメントペーストの流動性予測及び月コンクリート迅速評価の基礎的研究
  2009 - 2010
• 原始惑星系円盤における低温結晶成長過程
  2009 - 2010
• ナノ粒子の特異現象を取り入れたその場観察実験による宇宙ダスト生成過程の解明
  2009 - 2010
• 液体のように振舞う固体：ナノ領域の拡散現象と天文学
  2009 - 2010
• Nano Dust in the Solar System: Formation, Interactions and Detection
  2009 - 2010
• 月面基地建設の為の月資源からの酸素抽出とセメント製造、セメントペーストの流動性予測及び月コンクリート迅速評価の基礎的研究
  2009 - 2010
• 原始惑星系円盤における低温結晶成長過程
  2009 - 2010
• ナノ粒子の特異現象を取り入れたその場観察実験による宇宙ダスト生成過程の解明
  2009 - 2010
• 液体のように振舞う固体：ナノ領域の拡散現象と天文学
  2009 - 2010
• Nano Dust in the Solar System: Formation, Interactions and Detection
  2009 - 2010

• 生体ライブTEMイメージング法の開発による微生物のナノ粒子合成過程の可視化
  科学研究費助成事業
  01 Apr. 2025 - 31 Mar. 2029
  木村 勇気; 山崎 智也
  日本学術振興会, 基盤研究(A), 北海道大学, 25H00825
• In-situ nano-scale observation of the water-ice phase transition processes using transmission electron microscopy
  Grants-in-Aid for Scientific Research
  28 Jun. 2024 - 31 Mar. 2027
  木村 勇気
  Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Research (Exploratory), Hokkaido University, 24K21738
• Exploring new indicators representing the hygroscopicity of atmospheric organic aerosol
  Grants-in-Aid for Scientific Research
  01 Apr. 2023 - 31 Mar. 2027
  持田 陸宏; 佐藤 圭; 石塚 紳之介; 木村 勇気; 松井 仁志; 宮崎 雄三; 大畑 祥
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Nagoya University, 23H00515
• 水/氷界面に生成する同素不混和水の構造多様性の解明
  北海道大学低温科学研究所共同研究(開拓型)
  Apr. 2024 - Mar. 2027
  新家寛正; 木村勇気; 灘浩樹; 羽馬哲也
  Competitive research funding, 24K001
• 原始太陽系星雲内における分子生成効率の理解に向けた氷ナノ粒子の核生成実験
  科学研究費助成事業
  Apr. 2023 - Mar. 2025
  木村 勇気
  日本学術振興会, 学術変革領域研究(A), 北海道大学, 23H03981
• Paradigm shift in the method for observing non-equilibrium processes in real space: Elucidation of nucleation processes from solution by TEM
  Grants-in-Aid for Scientific Research
  Aug. 2020 - Mar. 2025
  木村 勇気; 瀧川 一学; 川野 潤; 田中 今日子
  本研究課題は、水溶液からの核生成の透過型電子顕微鏡“その場”観察実験を軸に、水和層の役割を理解するために、水和層の無い気相からの核生成実験などを対照実験として実施する。水溶液からの核生成の透過型電子顕微鏡“その場”観察実験では、溶液試料を観察できる3つの手法（窓板ホルダー、溶液セル、グラフェン膜）から、核生成のその場観察に最も適した手法として初年度に選定を行った窓板ホルダーを用いて、機械学習による核生成の予測に必須の教師データの取得を行った。その結果、低電子線画像と高電子線画像をそれぞれ1,000枚取得して教師画像セットを準備することで低電子線量で得た暗い像を電子線量にして1万倍程度明るくすることに成功した。さらに、溶液から核生成する粒子を早期に検出することにも成功した。また、電子線が溶媒である水を放射性分解することで、結晶化条件が変化してしまうことをできるだけ避けるために、電子線をパルス化するシステムを導入した。テスト試料としてステアリン酸結晶の電子線損傷を調べた結果、照射時間が10%になるようにパルス幅を調整した所、結晶の寿命は10倍以上に延びる結果が得られており、想定以上に効果があることが分かった。
  溶液からの核生成では、水和層が重要な役割を果たしていると考えられている。そこで、初年度に引き続き、水和層のない気相からの核生成実験を行い、その過程を干渉計でその場観察して核生成時の温度、圧力と過飽和度増加の時間スケールから核生成理論式に必須の物理量を炭素、チタン、炭化チタンに対して求めて論文を投稿した。
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), Hokkaido University, 20H05657
• 結晶成長過程における相転移機構の解明
  Apr. 2023 - Mar. 2024
  釣優香; 木村勇気; 山﨑智也
  北海道大学低温科学研究所, 一般共同研究, 北海道大学低温科学研究所, 23G042
• Discovery of key factors in nucleation processes from aqueous solution by direct TEM observation
  Grants-in-Aid for Scientific Research
  01 Apr. 2020 - 31 Mar. 2021
  木村 勇気; 瀧川 一学; 川野 潤; 田中 今日子
  核生成は物質形成の最初期のプロセスであり、科学から産業に至る様々な分野の鍵となるにもかかわらず、その理解は極めて限定的である。これは、核生成がナノ領域で高速に、かつ確率的におこる現象で実空間観察が非常に困難なためである。
  本研究では、「安定核の生成までに何が起こっているのか？」、「安定核の生成ルートはどのように決まるのか？」を核心をなす問いに据え、溶液中の核生成に影響する各因子の寄与の程度と物質依存性を明らかにし、核生成ルートを決めるキーファクターに制限を加えることを目的に研究を行った。キーファクターは、核生成理論式に必須の“核と水の界面エネルギー”とカイネティック係数(分子の取り込まれやすさ)、ダイマーの形成、脱水和や粘性、界面近傍のpHやイオン濃度、ナノ粒子特有の物性などである。
  TEM観察では、結晶の成長速度、形、集合、配列、サイズなどを直接観察でき、加えて電子回折パターンで相同定も同時に行えるため、核生成の理解に対して飛躍的な成果が見込める。そのため、目的の達成には溶液から前駆体を経て結晶ができるまでの核生成過程の一部始終をTEMにより実空間で可視化するのが最も近道であると考えている。本研究課題の間には、TEM観察するうえでボトルネックとなっている、確率的な核生成現象を偶然に頼って観察している状況に対し、機械学習を取り入れることで核生成の時間と場所を予測して能動的に核生成の一部始終をTEM観察するという革新的な手法の構築に取り組んだ。その結果、人間の眼で判断するよりも早く核生成を捉えることに成功した。この研究は基盤研究（S）に発展的内容で引き継がれた。
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 20H00323
• Nucleation
  Grants-in-Aid for Scientific Research
  Apr. 2015 - Mar. 2020
  Kimura Yuki
  We established an original experimental system to approach the initial process of crystallization. As a result, we found that the key factors controlling the nucleation from the gas phase are decreasing the melting point and the sticking probability of nanoparticles. We also established a transmission electron microscopy for in-situ observation of the nucleation processes from a solution in nanoscale. Then, we elucidated the role of the hydration layer in protein crystallization. For the first time, we have succeeded in directly demonstrating the relationship between nucleation and precursors in terms of the specificity that appears in the nanoscale by handling both vapor and solution phases. Furthermore, we clarified that the understanding of nucleation requires not only the formation of critical nuclei but also the growth beyond the nano-region to stable bulk crystals. Furthermore, we proposed a nucleation model that takes into account the physical properties of the nano-region.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), Hokkaido University, Principal investigator, Competitive research funding, 15H05731
• Formation and evolution of organic materials in protoplanetary disks
  Grants-in-Aid for Scientific Research
  28 Jun. 2013 - 31 Mar. 2018
  Nagahara Hiroko
  Formation of organic molecules on the surface of solid materials in protoplanetary disks are experimentally performed. Gas species are hydrogen and carbon oxide, the two most abundant species, and the solids are Fe-, Ni-, and FeNi- metals and amorphous silicate. Methane and linear chain compound are formed. The reaction takes place at lower temperatures on ice than that on amorphous silicates.
  Micro-XANES equipment has been developed in a beam line of Spring-8 in order to observe organics formation reactions in situ and analyze the chemical bonds. The new equipment enables us to observe and analyze organic and inorganic materials by using energy edges, which was used for the experimental samples by other teams of the current research project. Theoretical study on the surface of silicates, metals, and amorphous silicate were conducted on the basis of the first principle calcuration. A new physico-chemical model on the solar system evolution has been developed.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), 25108003
• Nanometer-scale paleomagnetism by the electron holography
  Grants-in-Aid for Scientific Research
  Apr. 2016 - Mar. 2018
  Kimura Yuki; YAMAMOTO Kazuo; TANIGAKI Toshiaki; NAKAMURA Norihiro
  We applied well known paleomagnetism to a nanometer-scale mineral in a meteorite for determination of temperature and magnetic field at the time of formation of nano-minerals in a mother asteroid of carbonaceous chondrite 4.6 billion years ago based on magnetic remnant observed using the electron holography. We successfully visualized a magnetic remnant of individual nano-minerals, which has been hidden in a total bulk value in case of traditional bulk analysis. We focused on magnetite particles in a carbonaceous meteorite and successfully determined its formation temperature in their parent body based on in-situ electron holography observation in a heating experiment.
  Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, Hokkaido University, Principal investigator, Competitive research funding, 16K13909
• フルイド反応透過電子顕微鏡を用いた微粒子合成と光触媒活性の溶液中その場観察研究
  日本学術振興会 二国間交流事業共同研究
  Apr. 2015 - Mar. 2017
  木村 勇気
  日本学術振興会, Principal investigator, Competitive research funding
• 気相からの核生成と宇宙ダスト
  平成28年度短時間微小重力実験
  Oct. 2016 - Feb. 2017
  木村 勇気
  国立研究開発法人宇宙航空研究開発機構, Principal investigator, Competitive research funding
• Development of ultrahigh vacuum (UHV) transmission electron microscope for in-situ observation of ice
  Grants-in-Aid for Scientific Research
  21 Oct. 2013 - 31 Mar. 2016
  Kouchi Akira; HIDAKA Hiroshi; OBA Yasuhiro; HAMA Tetsuya; CHIGAI Takeshi; WATANABE Naoki; KIMURA Yuki; TOMARU Takayuki
  An ultrahigh vacuum (UHV) transmission electron microscope for in-situ observation of ice has been developed. We use a single tilt liquid He cooling holder for specimen cooling to 4 K. Two ports are directed to the specimen surface for in-situ studies: gas-inlet, and UV irradiation.
  Results of preliminary observation are as follows: (1) Macroscopic defect structure of vapor-deposited amorphous ice are observed at first time. (2) Formation of ice XI by UV irradiation onto ices Ih and Ic are observed at 75-100 K. On the other hand, no structural change has been observed by UV irradiation onto amorphous ice. (3) Formation of high-density amorphous ice by CO matrix sublimation method has been developed.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 25247086
• Ultra-high Speed Crystallization in the Primitive Solar System
  Grants-in-Aid for Scientific Research
  01 Apr. 2010 - 31 Mar. 2014
  TSUKAMOTO Katsuo; NAKAMURA Tomoki; NAKAMOTO Taishi; INATOMI Yuko; NAKAMURA Norihiro; KIMURA Yuki; MIRUA Hitoshi
  In-situ observations of crystallization from chondrule melts have successfully been conducted using gas get levitation method. It was found that hypercooling of 300-1100K is needed for the reproduction of various chondrule textures and the crystallization finishes within a few seconds. Based on the experimental data, a new kinetic model could be proposed for the chondrule texture formation.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Tohoku University, 22244066
• In-situ observation of nucleation from a solution using an ionic liquid in a TEM
  Grants-in-Aid for Scientific Research
  2013 - 2014
  KIMURA Yuki
  Nucleation via metastable phases has been studied very attractively in recent years. In this study, we succeeded to visualize nucleation process by a novel method, which uses an ionic liquid solution instead of water solution, using in-situ transmission electron microscopy. We observe simultaneous formation of stable and metastable crystals. In addition, metastable crystals are immediately incorporated into a stable crystal, when they contact each other. Although the growth rate of metastable crystal is similar with stable crystal, the dissolution rate of metastable crystal is faster than that of stable crystal suggesting that final crystal is a result of this competition of formation and dissolution.
  Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, 東北大学, Principal investigator, Competitive research funding, 25610068
• Experimental approaches to reveal formation process of cosmic dust taken into account singular properties in mesoscale
  Grants-in-Aid for Scientific Research
  2012 - 2014
  KIMURA Yuki
  We succeeded to measure the temperature and concentration of a vapor at the moments of nucleation using a specially designed interferometer. Surface free energy and sticking probability of nanoparticles can be determined based on nucleation theories. As the result, it has been found that extremely high supersaturation of ten to the power of 4th to 14th has been required and for homogeneous nucleation and then the sticking probability is as small as 0.01%. In addition, the nuclei form as a liquid phase and crystallize as temperature drops and, therefore, structure of nuclei does not determine at the time of initial nucleation.
  Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (A), 東北大学, Principal investigator, Competitive research funding, 24684033
• Research of IR spectral features caused by nanoparticle surfaces and metastable crystal structure
  Grants-in-Aid for Scientific Research(挑戦的萌芽研究)
  2010 - 2011
  Yuki KIMURA; Itsuki SAKON
  There are a lot of unidentified infrared (UIR)features in the astronomical spectra. We assumed the reason that is characteristic physical parameters of nanoparticles, because no one ever considers the properties of nanoparticle, although cosmic dust has nanometer in size. To identify the UIR features, we constructed a new system, which is able to measure IR spectra of free frying as-grown nanoparticles. Our results showed that the free frying nanoparticles have different features compared with that in the spectra of bulk and nanoparticles embedded into a KBr pellets. UIR features will be identified based on our concept.
  Ministry of Education, Culture, Sports, Science and Technology, 挑戦的萌芽研究, 東北大学, Principal investigator, Competitive research funding, 22654022
• 液体のように振舞うナノ粒子:宇宙ダスト類似物の生成過程を観る“その場"観察実験
  科学研究費補助金(若手研究(A))
  2010 - 2011
  木村 勇気
  惑星系の形成過程に伴う物質進化過程の解明という地球惑星科学の第一級の課題に対して、宇宙固体微粒子(宇宙ダスト)の形成や結晶化過程を実験的に解明する。宇宙ダストは容器の無い宇宙空間で生成する為に、大きな過冷却度がついた後に生成することが容易に想像できる。特に、気相からの凝縮実験(煙の実験)において非接触で生成するナノ粒子の成長過程を干渉計を用いてその場観察することで、気相中でのナノ粒子生成時の核形成温度(過冷却度)や成長速度などを定量化することが目的である。ここで、ナノ粒子の"液体のような"非常に早い拡散現象が鍵になると考えている。物質科学と地球惑星科学分野との境界領域に新たな研究分野を形成する研究課題になる。初年度に組んだ、2波長マッハツェンダー干渉計を用いて、核形成温度と濃度を同時に測定することに成功した。また、凝縮温度と生成粒子のサイズを同時に説明可能なナノ粒子の"実効的な"表面張力と吸着係数を、核生成理論を用いることで同時に決定できることが明らかになり、当初の想定以上の成果を挙げられた。例えば、マンガンに関しては、表面エネルギーはナノ粒子であっても、バルクと同程度の値で、吸着係数は約0.4であった。さらに、ナノ粒子の融点降下や拡散速度の特異現象により液滴状融合成長が頻繁に起こることで核の数を減らす現象を定量的に示した。これにより、実際に宇宙ダストが生成する温度、そのサイズ、数密度などを核生成理論から予測可能になると期待される。
  文部科学省, 若手研究(A), 東北大学, Principal investigator, Competitive research funding, 22684024
• ナノ領域の特異現象と46億年前の微粒子形成
  科学研究費補助金
  2008 - 2011
  Competitive research funding
• Grain formation 4.6 Billion Years Ago based on anomalous phenomena appeared in nano-region
  Grant-in-Aid for Scientific Research
  2008 - 2011
  Competitive research funding
• Experimental approach concerning behavior of cosmic dust particlesboth inorganic and organic in proto Solar nebula
  Grants-in-Aid for Scientific Research(若手研究(スタートアップ))
  2007 - 2008
  Yuki KIMURA
  宇宙固体微粒子(ダスト)の類似物としての微粒子を実際に研究室で合成し、その光学特性や高温での振る舞い等を調べる事で、星・惑星形成過程におけるダストの果たす役割を明らかとする事を目的に研究を展開した。その結果、(1)結晶質珪酸塩微粒子の生成条件と非晶質珪酸塩微粒子の低温での結晶化過程を明らかにした。(2) 質量に依存しない酸素の同位体分別を示す珪酸塩微粒子の生成に世界で初めて成功し、ダストの生成にプラズマが重要であることをしめした。(3) 様々な天体に幅広く分布しているPAH のクラスターを実験室で再現し、その光学特性を明らかにした。
  Ministry of Education, Culture, Sports, Science and Technology, 若手研究(スタートアップ), 立命館大学->北海道大学, Principal investigator, Competitive research funding, 19840048
• 原始太陽系星雲中での無機・有機ダストの振る舞いに関する実験的アプローチ」
  科学研究費補助金
  2007 - 2008
  Competitive research funding
• 宇宙環境下でのダストの創製・変成・挙動に関する実験的アプローチ
  科学研究費補助金
  2004 - 2006
  Competitive research funding
• ナノ構造粒子の創製および特異現象の解明実験
  科学研究費補助金
  2002 - 2003
  木村 勇気
  ナノ領域で見られる特異現象が半導体やナノチューブなども含めて今後のナノ機能性物質創製のキーポイントになる。そこで、昨年度研究費にて購入した動的観察画像処理装置を活用し、我々の研究室に設置されている高分解能電子顕微鏡とを結びつけることで、ナノ粒子の動的挙動をシステマティックに明らかにしてきた。ここでの成果は、物性分野から天文分野に広く展開され、研究費を使用して国内外問わず、種々の分野(Astrophysics of Dust Symposium、惑星科学会、結晶成長学会、日本物理学会、月・惑星シンポジウム、微粒子プラズマ研究会、天文学会(3月23日発表予定))で公表した。
  動的観察画像処理装置を活用する事で、様々な元素を含んだカーボン薄膜における触媒効果の特異性、及び高温度領域における動的現象を原子オーダーで明らかにした。特にシリコンを含んだカーボン膜においてはナノダイヤモンドが優先的に生成する事を見出し、Journal of Crystal Growthに論文として発表した。また、チタンを含んだカーボン膜においては、真空加熱によりナノチューブが生成する事を電子顕微鏡中加熱による直接観察から明らかとした。さらに、触媒として鉄やコバルトといった遷移金属を用いる事で、カーボン膜中からカルビン、グラファイト、炭化物が加熱温度を調節する事により選択的に生成できることを見出した。これらの結果は論文としてまとめ、現在投稿中である。本研究は、元素を選ぶ事でカーボンの持つ多系をコントロール出来る画期的な成果といえる。
  また、宇宙塵として注目を集めているSi、Ti、Zrの炭化物を作成し、構造と赤外吸収を結びつけた手法を用いることで惑星科学の観測の分野とも連携して研究を展開した。研究費を活用して5月にアメリカのデンバーで開かれたダストに関する国際会議に出席し、成果の公表を行なうとともに、論文としてまとめ、Monthly Notices、A&Aに掲載された。また、TiCグレインに関する研究の発展的内容がApJ Supplement Seriesに掲載の運びとなった。
  今年度の成果として、投稿論文20編が発表された。
  日本学術振興会, 特別研究員奨励費, 立命館大学, Competitive research funding, 02J05808

• ナノ粒子特有の振る舞いから宇宙の謎に迫る
  11 Nov. 2017 - 11 Nov. 2017
  Lecturer
  第26回先端科学移動大学2017（市民講座）
  旭川市科学館「サイパル」
  General
• 煙ってなあに
  10 Nov. 2017 - 10 Nov. 2017
  Lecturer
  第26回先端科学移動大学2017（高等学校訪問授業）
  旭川南高等学校