研究者データベース

小野 円佳(オノ マドカ)
電子科学研究所 附属グリーンナノテクノロジー研究センター
准教授

基本情報

所属

  • 電子科学研究所 附属グリーンナノテクノロジー研究センター

職名

  • 准教授

学位

  • 学士(東京大学工学部物理工学科)
  • 修士(東京大学新領域創生科学研究科 物質系専攻)
  • 博士(東京大学新領域創生科学研究科 物質系専攻)

J-Global ID

研究キーワード

  • 熱特性   機械物性   光物性   無機材料   ガラス   

研究分野

  • ナノテク・材料 / 無機物質、無機材料化学 / ガラス・セラミクス

職歴

  • 2019年08月 - 現在 北海道大学 電子科学研究所 准教授
  • 2004年04月 - 現在 AGC株式会社

学歴

  • 2001年04月 - 2004年03月   東京大学   新領域創成科学研究科   物質系専攻 博士課程
  • 1999年04月 - 2001年03月   東京大学   新領域創成科学研究科   物質系専攻 修士課程
  • 1997年04月 - 1999年03月   東京大学   工学部   物理工学科
  • 1995年04月 -   東京大学   理科I類

所属学協会

  • 米国セラミックス協会   応用物理学会フォトニクス分科会   応用物理学会   

研究活動情報

論文

  • Hongyeun Kim, Yongjian Yang, Hirofumi Tokunaga, Akio Koike, Madoka Ono, John C. Mauro
    Journal of the American Ceramic Society 2022年09月
  • Madoka Ono, Junji Nishii
    Journal of the Ceramic Society of Japan 130 8 558 - 562 2022年08月01日
  • Madoka Ono, Kenji Shinozaki, Jumpei Ueda, Ryohei Oka, Tetsuo Kishi, Sunao Kurimura, Yoshihiro Takahashi, Tomoharu Hasegawa, Yoshimasa Matsushita, Takahiro Murata, Yoshiki Yamazaki
    Journal of the Ceramic Society of Japan 130 8 509 - 511 2022年08月01日 [査読有り]
  • Jayani Kalahe, Yohei Onodera, Yasuyuki Takimoto, Hiroyuki Hijiya, Madoka Ono, Katsuaki Miyatani, Shinji Kohara, Shingo Urata, Jincheng Du
    Journal of Non-Crystalline Solids 588 121639 - 121639 2022年07月 [査読有り][通常論文]
  • Katelyn A. Kirchner, Daniel R. Cassar, Edgar D. Zanotto, Madoka Ono, Seong H. Kim, Karan Doss, Mikkel L. Bødker, Morten M. Smedskjaer, Shinji Kohara, Longwen Tang, Mathieu Bauchy, Collin J. Wilkinson, Yongjian Yang, Rebecca S. Welch, Matthew Mancini, John C. Mauro
    Chemical Reviews 2022年05月05日 [査読有り]
  • Suguru Iwasaki, Mihiro Hoshino, Haruhiko Morito, Masaya Kumagai, Yukari Katsura, Melbert Jeem, Madoka Ono, Junji Nishii, Masaya Fujioka
    Inorganic Chemistry 2022年03月01日
  • Takahisa Omata, Aman Sharma, Issei Suzuki, Tomohiro Ishiyama, Shinji Kohara, Koji Ohara, Madoka Ono, Yang Ren, Khurelbaatar Zagarzusem, Masaya Fujioka, Gaoyang Zhao, Junji Nishii
    ChemPhysChem 2021年12月18日
  • Madoka Ono
    Journal of Lightwave Technology 39 16 5258 - 5262 2021年08月 [査読有り][招待有り]
  • Rebecca S. Welch, Kuo‐Hao Lee, Collin J. Wilkinson, Madoka Ono, Caio B. Bragatto, John C. Mauro
    Journal of the American Ceramic Society 104 6183 - 6193 2021年07月27日 [査読有り]
  • Lu Deng, Katsuaki Miyatani, Michinori Suehara, Shin-ichi Amma, Madoka Ono, Shingo Urata, Jincheng Du
    npj Materials Degradation 5 1 2021年04月 [査読有り][通常論文]
     
    AbstractThe ion-exchange and associated interfacial reaction mechanisms of silicate glasses are critical in elucidating their aqueous corrosion behaviors, surface modification and property changes, hence have potential impact on both science and technology. This work reports findings of the atomic and nanoscale details of the glass–water interfacial reactions revealed by applying reactive force field (ReaxFF) based molecular dynamics (MD) simulations, from which the key mechanisms of the ion exchange, as well as the kinetics of associated interfacial reactions, are elucidated. It was found that the Na+ and H+ ion exchange can happen between two oxygen ions on a single silicon oxygen tetrahedron or adjacent tetrahedra. In addition, the clustered reaction of two non-bridging oxygens mediated by an adjacent water molecule was also identified. The latter reaction might be the main mechanism of water transport after initial surface reactions that consume the non-bridging oxygen species on the surface. Water molecules thus can play two roles: as an intermediate during the proton transfer processes and as a terminator of the clustered reactions. Statistical analyses were performed to obtain reaction kinetics and the results show that silanol formation is a more favored process than the silanol re-formation within the first 3 ns of interfacial reactions. The results obtained thus shed lights on the complex ion-exchange mechanisms during glass hydration and enable more detailed understanding of the corrosion and glass–water interactions of silicate glasses.
  • Madoka Ono, Satoshi Miyasaka, Yoichi Takato, Shingo Urata, Yasuo Hayashi
    Journal of the American Ceramic Society 104 5341 - 5353 2021年02月24日
  • Takahisa Omata, Aman Sharma, Takuya Kinoshita, Issei Suzuki, Tomohiro Ishiyama, Shinji Kohara, Koji Ohara, Madoka Ono, Tong Fang, Yang Ren, Masaya Fujioka, Gaoyang Zhao, Junji Nishii
    Journal of Materials Chemistry A 9 36 20595 - 20606 2021年 
    In this study, the effect of GeO2 on the thermal stability and proton mobility (μH) of proton-conducting phosphate glasses was experimentally investigated using 22HO1/2–3NaO1/2–(12 − x)LaO3/2xGeO2–63PO5/2 glasses.
  • Yongjian Yang, Osamu Homma, Shingo Urata, Madoka Ono, John C. Mauro
    npj Computational Materials 6 1 2020年12月 [査読有り][通常論文]
     
    Abstract Silica glass is the most indispensable material in optical communication applications due to its superior optical properties. The transmission loss of silica glass has been reduced over the past 30 years by continuous efforts toward decreasing density fluctuations by lowering of fictive temperature, e.g., through improvements in processing or doping. A recent study has shown that shrinkage of structural voids by hot compression is a promising way to further decrease the loss. However, an atomic understanding of the pressure effect is still lacking. Here, using molecular simulations, we connect the void shrinkage to topological pruning of silica network. Two physical models predict that the Rayleigh scattering loss of pressure-quenched silica glass can be reduced by >50% when the glass is quenched at an appropriate pressure (4 GPa in our simulation). Our studies are consistent with available experimental results and demonstrate topologically optimized structure can give desirable properties for optical applications of silica as well as other glasses with similar network structure.
  • Khurelbaatar Zagarzusem, Masaya Fujioka, Taizo Shibuya, Satoshi Demura, Shintaro Adachi, Yoshihiko Takano, Melbert Jeem, Madoka Ono, Hideo Kaiju, Junji Nishii
    2D Materials 8 1 015007 - 015007 2020年10月15日 [査読有り][通常論文]
  • Yongjian Yang, Hirofumi Tokunaga, Kazutaka Hayashi, Madoka Ono, John C. Mauro
    Journal of the American Ceramic Society 104 114 - 127 2020年09月07日 [査読有り][通常論文]
  • Yongjian Yang, Hirofumi Tokunaga, Madoka Ono, Kazutaka Hayashi, John C. Mauro
    Journal of the American Ceramic Society 103 8 4256 - 4265 2020年08月 [査読有り][通常論文]
  • 低損失ファイバーレーザーに向けたシリカガラスの空隙制御
    小野 円佳
    レーザー研究 48 7 339 - 343 2020年07月 [査読有り][招待有り]
  • Madoka Ono, Satoshi Miyasaka, Yoichi Takato, Shingo Urata, Haruhiko Yoshino, Ryota Ando, Yasuo Hayashi
    Scientific Reports 9 1 2019年12月 [査読有り][通常論文]
  • Lu Deng, Katsuaki Miyatani, Shin-ichi Amma, Michinori Suehara, Madoka Ono, Yuichi Yamamoto, Shingo Urata, Jincheng Du
    The Journal of Physical Chemistry C 123 35 21538 - 21547 2019年08月 [査読有り][通常論文]
  • Yang Yongjian, Tokunaga Hirofumi, Ono Madoka, Hayashi Kazutaka, Mauro John C
    SCRIPTA MATERIALIA 166 1 - 5 2019年06月 [査読有り][通常論文]
  • Urata Shingo, Yoshino Haruhiko, Ono Madoka, Miyasaka Satoshi, Ando Ryota, Hayashi Yasuo
    JOURNAL OF PHYSICAL CHEMISTRY C 122 49 28204 - 28214 2018年12月13日 [査読有り][通常論文]
  • Shingo Urata, Ryota Ando, Madoka Ono, Yasuo Hayashi
    Journal of the American Ceramic Society 101 6 2266 - 2276 2018年06月01日 [査読有り][通常論文]
     
    Energy release rate and fracture toughness of amorphous aluminum nanoparticles reinforced soda-lime silica glass (SLSG) were measured by performing fracture simulations of a single-notched specimen via molecular dynamics simulations. The simulation procedure was first applied to conventional oxide glasses and the accuracy was verified with comparing to experimental data. According to the fracture simulations on three models of SLSG/-Al2O3 composite, it was found that the crack propagation in the composites is prevented through following remarkable phenomena one is that a-Al2O3 nanoparticles increase fracture surface area by disturbing crack propagation. The other is that the deformation of a-Al2O3 nanoparticle dissipates energy through cracking. Moreover, one of the models shows us that the crack cannot propagate if the initial notch is generated inside a-Al2O3 nanoparticle. Such strengthening is partly due to the fact that the strength of the interface between nanoparticle and SLSG matrix is comparable to that of SLSG matrix, implying that their interface does not reduce crack resistance of the oxide glass.
  • Madoka Ono, Shuhei Aoyama, Masanori Fujinami, Setsuro Ito
    Optics Express 26 7 7942 - 7948 2018年04月02日 [査読有り][通常論文]
     
    We propose the formation of silica glass with improved optical transport properties by compressing its melted phase with a hot isostatic pressure machine at high pressure and temperature. The lowest Rayleigh scattering loss was obtained for the glass held at 200 MPa and 2073 K for 4 h. The observed loss corresponds to 0.07 dB/Km at 1.55 μm, which is about half of the loss in conventional silica glass fiber. The decrease in the loss was well explained in terms of the decrease in the size of the sub-nanometer-sized structural voids observed by positron annihilation lifetime spectroscopy in silica glass. The achievement of high transparency and strong confinement of light represents a promising result for the development of future fiber-core media.
  • 小野 円佳
    New Glass 32 3 3 - 6 ニューガラスフォーラム 2017年 [査読無し][通常論文]
  • 電子消滅分光法を用いた金属の照射損傷
    藤浪 真紀, 小野 円佳, 伊藤 節郎
    日本陽電子科学会会報「陽電子科学」 8 2017年 [査読有り][通常論文]
  • A. Yagmur, K. Uchida, K. Ihara, I. Ioka, T. Kikkawa, M. Ono, J. Endo, K. Kashiwagi, T. Nakashima, A. Kirihara, M. Ishida, E. Saitoh
    Applied Physics Letters 109 24 2016年12月12日 [査読有り][通常論文]
     
    © 2016 Author(s). Thermoelectric devices based on the spin Seebeck effect (SSE) were irradiated with gamma (γ) rays with the total dose of around 3 × 105 Gy in order to investigate the γ-radiation resistance of the devices. To demonstrate this, Pt/Ni0.2Zn0.3Fe2.5O4/Glass and Pt/Bi0.1Y2.9Fe5O12/Gd3Ga5O12 SSE devices were used. We confirmed that the thermoelectric, magnetic, and structural properties of the SSE devices are not affected by the γ-ray irradiation. This result demonstrates that SSE devices are applicable to thermoelectric generation even in high radiation environments.
  • Setsuro Ito, Taketoshi Taniguchi, Madoka Ono, Ken Uemura
    JOURNAL OF NON-CRYSTALLINE SOLIDS 358 24 3453 - 3458 2012年12月 [査読有り][通常論文]
     
    To clarify the nanoscale deformation and fracture behaviors of glass under stress, changes in the network and void structures of xNa(2)O-(1 - x)SiO2 glasses are investigated at a constant strain rate via molecular dynamics (MD) simulation and volume rendering methods. Glasses with higher Na2O contents have lower polymerized network structures and lower Young's moduli, but exhibit smaller total void volumes and void sizes. Under tension, network breakdown increases the total void volume and void size of SiO2 glass. Hence, SiO2 glass breaks at a relatively small strain due to decreased flow. In contrast, network rearrangement slightly increases the void volume and void size of Na2O-containing glass. Consequently, Na2O-containing glass breaks at a larger strain due to increased flow. Under compression, SiO2 glass shows a larger densification than Na2O-containing glasses, because densification is attributed to crushing larger voids into smaller voids. These results indicate that controlling the structure is crucial to suppress crack formation because the network and void structures strongly affect deformation and fracture. (c) 2012 Elsevier B.V. All rights reserved.
  • Madoka Ono, Kenta Hara, Masanori Fujinami, Setsuro Ito
    APPLIED PHYSICS LETTERS 101 16 2012年10月 [査読有り][通常論文]
     
    We examine voids in silica glasses with different fictive temperatures using positron annihilation lifetime spectroscopy. The pick-off annihilation lifetime of ortho-positronium increases with the fictive temperature, T-f, indicating that the void size increases. High T-f leads to high density and low degree of network polymerization so that increasing void size means that the density fluctuation of the silica glass increases with high T-f. Assuming that such density fluctuation causes light scattering, the previously reported T-f dependence of the Rayleigh scattering coefficient can be well explained by the change in void size. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4761982]
  • 小野 円佳, 藤浪 眞紀, 伊藤 節郎
    New Glass 27 1 41 - 44 ニューガラスフォーラム 2012年 [査読無し][通常論文]
  • 小野 円佳
    New Glass 26 4 47 - 49 ニューガラスフォーラム 2011年 [査読無し][通常論文]
  • Madoka Ono, Akio Koike, Kaname Okada, Tomonori Ogawa, Sinya Kikugawa
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 116 1358 1126 - 1129 2008年10月 [査読有り][通常論文]
     
    Fluorine-doped silica glass fiber was fabricated as fiber-core for transmittance of deep ultraviolet wavelength region. By examining the effect of oxyhydrogen flame onto the core-glass (conventional cleaning process called fire-polishing process), it was found to create oxygen-deficiency centers. Additionally, fire-polishing process changes the distribution of fluorine concentration near core-cladding interface and leads to the deterioration of the optical characteristics of the fiber. By conducting preform fabrication without fire-polishing, the obtained fluorine-doped silica glass fiber showed high transmittance of more than 92% m(-1) at 266 nm and excellent durability after 4 G pulses of 7 mJcm(-2) laser irradiation. (C)2008 The Ceramic Society of Japan. All rights reserved.
  • M Ono, H Kishida, H Okamoto
    PHYSICAL REVIEW LETTERS 95 8 87401  2005年08月 [査読有り][通常論文]
     
    The third-harmonic-generation (THG) spectrum was measured for a NiBr-chain compound, which is a one-dimensional Mott insulator, in a reflection configuration. A sharp peak and a shoulder structure in the THG spectrum are attributed to three-photon resonance to an exciton and a continuum, respectively. The band-edge energy, the exciton binding energy, and the spectral weights for the exciton and the continuum were determined from comparative studies of linear absorption, THG, and electroreflectance spectra. The excitonic effect is more pronounced in the NiCl chain than in the NiBr chain.
  • S Iwai, Y Okimoto, M Ono, H Matsuzaki, A Maeda, H Kishida, H Okamoto, Y Tokura
    ULTRAFAST PHENOMENA XIV 79 340 - 342 2005年 [査読有り][通常論文]
     
    We demonstrated the ultrafast photoinduced Mott transition from a charge transfer (CT) insulator to a metal in a halogen-bridged Ni chain compound by visible-mid IR pump-probe reflection spectroscopy. Upon the excitation of the CT band, the spectral weight of the gap transition is transferred to the inner-gap region. When the excitation density exceeds 0.1 per Ni site, the Drude-like high-reflection band appears in the infrared region, indicating the formation of a metallic state. The photogeneration of the metallic state and the subsequent recovery of the original insulating state occur within a few picoseconds.
  • A Maeda, M Ono, H Kishida, T Manako, A Sawa, M Kawasaki, Y Tokura, H Okamoto
    PHYSICAL REVIEW B 70 12 125117  2004年09月 [査読有り][通常論文]
     
    We measured the Imchi((3))(-omega;omega,-omega,omega) spectrum associated with two-photon absorption in the CuO-chain compound Sr2CuO3 using the Z-scan method. The maximum value of Imchi((3))(-omega;omega,-omega,omega) is fairly large, reaching 8x10(-10) esu. A simple three-level model can explain both the absolute value and spectral shape of Imchi((3))(-omega;omega,-omega,omega), consistently with those of \chi((3))(-3omega;omega,omega,omega)\ and Imchi((3))(-omega;0,0,omega) previously obtained by third harmonic generation and electroreflectance spectroscopy, respectively. The difference in the Imchi((3))(-omega;omega,-omega,omega) spectra between Sr2CuO3 and another CuO-chain compound Ca2CuO3 and a two-dimensional cuprate Nd2CuO4 is discussed considering excitonic effect and dimensionality of electronic structures.
  • M Ono, K Miura, A Maeda, H Matsuzaki, H Kishida, Y Taguchi, Y Tokura, M Yamashita, H Okamoto
    PHYSICAL REVIEW B 70 8 85101  2004年08月 [査読有り][通常論文]
     
    We studied the linear and nonlinear optical responses in the one-dimensional (1D) Mott insulators of the halogen (X)-bridged nickel compounds (the NiX-chain compounds), [Ni(chxn)(2)X]Y-2 [X,Y=Cl; X,Y=Br; X=Cl, Y=NO3: (chxn)=cyclohexanediamine] and the copper oxide (CuO) chain compounds, A(2)CuO(3) (A=Sr and Ca). The excitation profiles of the photoconductivity as well as the photoluminescence efficiency measurements show that charge-transfer (CT) excited states in the NiX-chain compounds form excitonic bound states, while the excitonic effect is relatively small in Sr2CuO3 and negligible in Ca2CuO3. The relatively large excitonic effect in the NiX-chain compounds is attributable to the strong 1D confinement of the electronic states. The temperature dependence of the epsilon(2) spectra reveals that the spectral widths Gamma(CT) of the CT bands are dominated mainly by the electron-lattice interaction, which is smaller in the NiX-chain compounds than in the CuO-chain ones. The chi((3))(-omega;0,0,omega) spectra of the 1D Mott insulators were obtained by the electroreflectance spectroscopy. The maximum values of \Imchi((3))(-omega;0,0,omega)\ in the 1D Mott insulators(similar to10(-5)-10(-8) esu) were considerably larger than those in other 1D semiconductors such as 1D band insulators of silicon polymers, and 1D Peierls insulators of pi-conjugated polymers and halogen-bridged Pt compounds (similar to10(-8)-10(-10) esu). To elucidate the enhancement of \Imchi((3))(-omega;0,0,omega)\ in the 1D Mott insulators, we have compared the nature of the photoexcited states of the 1D Mott insulators with those of the 1D band and Peierls insulators. In the 1D Mott insulators, the odd and even CT excited states are nearly degenerate. This degeneracy induces the large transition dipole moment between these two states and then leads to the enhancement of chi((3)). Such a feature in the 1D Mott insulators is independent of the magnitude of the excitonic effect, although the excitonic effect sharpens the chi((3)) spectrum and enhances the maximum value of \chi((3))\. In the 1D band and Peierls insulators, on the other hand, the splitting between the lowest excited state with odd parity and the second-lowest one with even parity is as large as the exciton binding energy. It leads to the diminution of the transition dipole moment between these two excited states and hence of chi((3)). These differences of the photoexcited states between the 1D Mott insulators and others have been explained in terms of the 1D extended Peierls-Hubbard model.
  • H Matsuzaki, K Iwano, T Aizawa, M Ono, H Kishida, M Yamashita, H Okamoto
    PHYSICAL REVIEW B 70 3 35204  2004年07月 [査読有り][通常論文]
     
    The electronic structures of one-dimensional (1D) halogen-bridged mixed-metal compounds, [Ni1-xPdx(chxn)(2)X]X-2 (chxn= cyclohexanediamine; X=Cl,Br; 0less than or equal toxless than or equal to1), are investigated through optical and magnetic measurements. The results reveal that the system changes from charge-transfer (CT) insulator to Mott-Hubbard (MH) insulator at around xsimilar to0.3, and from MH insulator to Peierls insulator at xsimilar to0.9 with increasing x. From the analysis of optical conductivity spectra using the 1D two-band extended Peierls-Hubbard model, electronic parameters such as Coulomb repulsion energy, pd hybridization, CT energy, and electron-lattice interaction are determined.
  • S Iwai, M Ono, A Maeda, H Matsuzaki, H Kishida, H Okamoto, Y Tokura
    PHYSICAL REVIEW LETTERS 91 5 57401  2003年08月 [査読有り][通常論文]
     
    We demonstrate the ultrafast photoinduced Mott transition from a charge transfer insulator to a metal in a halogen-bridged Ni-chain compound by pump-probe reflection spectroscopy. Upon the irradiation of a 130-femtosecond laser pulse, the spectral weight of the gap transition is transferred to the inner-gap region. When the photoexcitation density exceeds 0.1/Ni site, the Drude-like high-reflection band appears in the infrared region, signaling the formation of a metallic state. The photogeneration of the metallic state and the subsequent recovery to the original gapped state occur within a few picoseconds.
  • H Kishida, M Ono, A Sawa, M Kawasaki, Y Tokura, H Okamoto
    PHYSICAL REVIEW B 68 7 2003年08月 [査読有り][通常論文]
     
    We have measured third-order nonlinear susceptibility (chi((3))) spectra of the two-dimensional (2D) cuprates La2CuO4 and Nd2CuO4 by third-harmonic generation. The \chi((3))\ spectra exhibit broad peaks with maximum values of 0.6x10(-10) esu in La2CuO4 and 2x10(-10) esu in Nd2CuO4. These peaks are attributable to three-photon resonance to the charge transfer (CT) excited state. The chi((3)) phase spectrum of Nd2CuO4 has revealed that the two-photon resonance to the even CT state are hidden on the high-energy side of the chi((3)) peak. The difference in chi((3)) values between the 2D and 1D cuprates is discussed by considering differences in spin-charge coupling and in charge configurations between the 2D and 1D cases.
  • H Kishida, M Ono, H Matsuzaki, M Yamashita, Y Taguchi, Y Tokura, H Okamoto
    SYNTHETIC METALS 135 1-3 315 - 316 2003年04月 [査読有り][通常論文]
     
    Third-order optical nonlinearity has been studied in one-dimensional Mott insulators, Sr2CuO3, Ca2CuO3, and halogen-bridged Ni compounds [Ni(chxn)(2)X]Y-2 (X=Br,Cl; Y=Br,Cl,(NO3)), by electroreflectance (ER) spectroscopy. Im chi((3))(-omega;0,0,omega) (ER) is evaluated to be chi((3))= 10(-8) to 10(-5)esu, which is significantly larger than those of conjugated polymers, 10(-10similar to)10(-8)esu. An analysis of the ER spectral shape reveals that the strong enhancement of nonlinear optical response originates from the large transition dipole moments between nearly degenerate odd and even states.
  • M Ono, H Kishida, H Okamoto, T Manako, M Izumi, A Sawa, M Kawasaki, Y Tokura
    SYNTHETIC METALS 135 1-3 313 - 314 2003年04月 [査読有り][通常論文]
     
    Spectra of third-order nonlinear susceptibility \chi((3))\ have been investigated for 1D Mott insulators (MIs), Sr2CuO3 and Ca2CuO3 and 2D MIs, Nd2CuO4 and La2CuO4, by using third-harmonic generation (THG) spectroscopy. The three-photon resonance to the odd-charge-transfer (CT) state enhances \chi((3))\. The maximum values of \chi((3))\ in the 2D MIs (similar to10(-10) esu) are one order smaller than those in the 1D MIs(similar to10(-9)esu). The difference of the magnitudes and spectral shapes of \chi((3))\ between the 1D and 2D MIs can be explained by taking account of the concept of spin-charge separation.
  • K Iwano, M Ono, H Okamoto
    PHYSICAL REVIEW B 66 23 235103  2002年12月 [査読有り][通常論文]
     
    We performed luminescence measurements in one-dimensional Mott insulators of halogen(X)-bridged Ni compounds: [Ni(chxn)(2)X]Y-2((X,Y)=(Br,Br),(Cl,Cl),(Cl,NO3)). For all three compounds, we observe luminescence bands that have a small Stokes shift E-S of less than 0.05 eV. To understand such small values of E-S, we applied an extended Peierls-Hubbard model to investigate lattice relaxation in the photoexcited states. The results demonstrate a different mechanism: a strong effective suppression of the electron-lattice interaction can occur by combining a basic property of Mott insulators and the present type of electron-lattice interaction. We argue that the negligible values of E-S and the small widths of the absorption spectra can be explained by this mechanism.
  • H Kishida, M Ono, K Miura, H Okamoto, M Izumi, T Manako, M Kawasaki, Y Taguchi, Y Tokura, T Tohyama, K Tsutsui, S Maekawa
    PHYSICAL REVIEW LETTERS 87 17 177401  2001年10月 [査読有り][通常論文]
     
    Spectra of the third-order nonlinear susceptibility chi ((3)) have been investigated for one-dimensional Mott insulators, Sr2CuO3 and Ca2CuO3, by applying the third-harmonic generation (THG) spectroscopy on their single-crystalline thin films. The three-photon resonance to the lowest charge-transfer (CT) state with odd parity strongly enhances chi ((3)), which is of the order of 10(-9) esu. The two-photon resonant structure unravels the even-CT state, located close to the odd-CT state. Two types of chi ((3)) spectra obtained from THG and the electroreflectance measurements are explained based on the concept of spin-charge separation.
  • H Okamoto, H Kishida, M Ono, H Matsuzaki, M Yamashita, T Manabe
    JOURNAL OF LUMINESCENCE 87-9 204 - 206 2000年05月 [査読有り][通常論文]
     
    To study nature of photo-excited states in one-dimensional (1D) strongly correlated electron systems, we have synthesized the halogen(X)-bridged Ni compounds, [Ni(chxn)(2)X]Y-2 (X = Cl or Br; Y = Cl, Br, NO3 or ClO4; (chxn) = cyclohexanediamine), which have 1D Ni-X chains. These Ni compounds are charge-transfer (CT) insulators, showing strong C-T transitions from the occupied halogen p band to the Ni d upper Hubbard band. The CT transition energies can be systematically controlled from 1.3 to 2.0 eV by the choice of the bridging-halogen ions X and the counter ions Y. From the excitation profiles of the photoconductivities. excitonic effects in the Ni-X chains have been found to depend strongly on the degree of pd hybridization. (C) 2000 Elsevier Science B.V. All rights reserved.
  • M Ono, K Matsuda, T Saiki, K Nishi, T Mukaiyama, M Kuwata-Gonokami
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 38 12A L1460 - L1462 1999年12月 [査読有り][通常論文]
     
    We study time-resolved emission from self-assembled single InGaAs/GaAs quantum dots by the time-correlated single photon counting method using near-field optical microscopy. The decay time of the emission fi um discrete levels of a single quantum dot increases with the decrease in the emission energy and with the increase in the excitation intensity. We develop a rate equation model which accounts for the initial filling of the states, cascade relaxation, state filling and carrier feeding from a wetting layer. High collection efficiency of a double-tapered-type fiber probe enables us to study the emission even at very weak excitation intensities. The direct excitation into a single dot is dominant at this excitation level, State filling, cascade relaxation and extra carrier feeding from the wetting layer become pronounced when the excitation intensity increases.
  • 空隙構造制御によるシリカガラスの超低損失化
    小野円佳, 青山周平, 藤浪眞紀, 伊藤節郎
    「光学」特集号「2018年 日本の光学研究」 48 6 [査読有り][通常論文]

書籍

  • (担当:編者(編著者)範囲:企画・制作チーム 代表)
    文部科学省 2022年04月
  • 細野 秀雄, 平野 正浩 (担当:分担執筆範囲:“エレクトライドの用途 冷電子発生とFED”「透明酸化物機能材料の開発と応用」細野秀雄、平野正浩 監修、シーエムシー出版 2006年初版 2011年普及版, 第III編 第5章, 4 p. 213-223.小野円佳、ウェブスター暁、伊藤節郎)
    シーエムシー出版 2011年 (ISBN: 9784781303345)

講演・口頭発表等

  • 小野 円佳
    日本分光学会 紫外フロンティア分光シンポジウム 2022年03月
  • 小野円佳
    電子情報通信学会(OCS研究会) 2022年02月 口頭発表(招待・特別)
  • 小野 円佳
    第35回日本放射光学会年会・放射光科学合同シンポジウム 2022年01月 口頭発表(招待・特別)
  • 小野 円佳
    2021 RIES-CEFMS on-line symposium (webinar) 2021年12月 口頭発表(招待・特別)
  • Madoka Ono, Y. Tanabe, Y. Yong, J. C. Mauro, M. Jeem, M. Fujioka, J. Nishii
    PACRIM 14 / GOMD '21 2021年12月 口頭発表(一般)
  • Ono, Madoka, Miyasaka Satoshi, Yoichi Takato, Urata Shingo, Yasuo Hayashi
    PACRIM 14 / GOMD '21 口頭発表(一般)
  • 小野 円佳
    「先進・機能性材料」(AIMS-JUTEM共催)講演会 2021年11月 口頭発表(招待・特別)
  • 小野 円佳
    日本セラミックス協会 第34回秋季シンポジウム 2021年09月
  • Void-Engineering in Silica Glass for Fibers with Ultralow Optical Scattering Loss  [招待講演]
    小野 円佳
    ECOC 2020 2020年12月 口頭発表(招待・特別)
  • Pressure Control of Fluctuation in Glass  [招待講演]
    小野 円佳
    Glass Meeting 2020 2020年12月 口頭発表(招待・特別)
  • Suppression of optical loss in pressure-quenched silica glass: University Modeling and experimental results  [通常講演]
    小野 円佳
    Virtual Glass Summit 2020 2020年08月 口頭発表(一般)
  • Mechanical toughness of the metal-nanoparticle-implanted glass, its mechanical strength and the dependence on the preparation conditions  [招待講演]
    小野 円佳
    Virtual Glass Summit 2020 2020年08月 口頭発表(招待・特別)
  • 高温高圧処理を用いたシリカガラスの超低損失化  [招待講演]
    小野円佳
    The 30th Meeting on Glasses for Photonics 2020年01月 シンポジウム・ワークショップパネル(指名)
  • 高温高圧処理を用いたシリカガラスの超低損失化  [招待講演]
    小野 円佳
    レーザー学会学術講演会第 40 回年次大会 2020年01月 口頭発表(招待・特別)
  • 高温高圧処理を用いたシリカガラスの超低損失化  [招待講演]
    小野 円佳
    筑波大学セミナー(物質科学セミナー) 2019年11月 公開講演,セミナー,チュートリアル,講習,講義等
  • 圧力を利用した空隙制御による 超低損失シリカガラスの実現  [招待講演]
    小野 円佳
    レーザー学会 第538回研究会 「ファイバレーザー技術」 2019年11月 口頭発表(招待・特別)
  • Void and optical property in silica glass  [招待講演]
    小野 円佳, 藤浪 眞紀, 伊藤 節郎
    14th International Conference of Non-Crystalline Materials 2019年11月 口頭発表(招待・特別)
  • Significant suppression of Rayleigh scattering loss in silica glass formed by the compression of its melted phase  [招待講演]
    小野 円佳, 原 健太, 藤浪眞紀, 伊藤 節郎
    International Summit on Optics, Photonics and laser technologies 2019年06月 口頭発表(招待・特別)
  • Significant suppression of Rayleigh scattering loss in silica glass formed by the compression of its melted phase  [招待講演]
    小野 円佳
    10th international Conference and Exibition on Lasers, Optics & Photonics 2018年11月 口頭発表(招待・特別)
  • Void structure in silica glass observed with positron annihilation lifetime spectroscopy – the effect on its optical properties  [招待講演]
    M. Ono, M. Fujinami, S. Ito
    International Congress on Glass 2018 2018年 口頭発表(招待・特別)
  • Thermally tempered Soda-Borosilicate glasses and their frangibility  [通常講演]
    小野 円佳
    Glass & Optical Materials Division Annual Meeting 2018 2018年 口頭発表(一般)
  • ガラスのミラー定数と破砕特性  [通常講演]
    小野 円佳
    ガラス&フォトニクス討論会 2017年11月 ポスター発表
  • 陽電子消滅法によるシリカガラスの空隙の観測  [招待講演]
    小野 円佳
    日本セラミックス協会 第30回秋季シンポジウム 2017年09月 シンポジウム・ワークショップパネル(指名)
  • Thermal tempering of Soda-Borosilicate glasses and the fracture patterns of the tempered glasses  [通常講演]
    小野 円佳
    The 58th symposium on glasses and Photonic Materials 2017年 口頭発表(一般)
  • Void structure in silica glass observed with positron annihilation lifetime spectroscopy the effect on its optical properties  [通常講演]
    M. Ono, M. Fujinami, S. Ito
    Glass & Optical Materials Division Annual Meeting 2017 2017年 口頭発表(一般)
  • Progress of the Strengthened Glass and Its Applications  [招待講演]
    小野 円佳
    International Symposium on Future Innovative and Reliable Materials 2017年 口頭発表(招待・特別)
  • Anomaly of thermal expansion coefficient above Tg in soda-borosilicate glass system  [通常講演]
    小野 円佳, 宮嶋 哲也, 伊藤 節郎
    GOMD-JCRS joint sympo-2016 2016年11月 口頭発表(一般)
  • Void Structure and Mechanical Properties of Corona-Discharged Glasses  [通常講演]
    M. Ono, M. Fujinami, S. Ito
    Glass & Optical Materials Division Annual Meeting 2016 2016年 口頭発表(一般)
  • Stress relaxation of chemically tempered glass  [通常講演]
    Naoki Fujii, Madoka Ono, Yasumasa Kato
    International Congress on Glass 2016 2016年 口頭発表(一般)
  • Investigation of Void Structure in Silica-based Glass using Positron Annihilation Spectroscopy  [通常講演]
    M. Ono, T. Taniguchi, K. Uemura, S. Ito, K. Hara, M. Fujinami
    PACRIM 2011 2011年 ポスター発表
  • Observation of ArF Laser induced Structural Defects in Highly Transparent Synthetic Silica glass  [通常講演]
    M. Ono, A. Koike, K. Iwata, M. Takata
    CLEO/QELS 2010 2010年05月 ポスター発表
  • Detection of Structural Defects of Extremely Low Concentrations in Commercial Synthetic Silica Glass  [招待講演]
    M. Ono, T. Ogawa, A. Koike, M. Takata
    International Symposium of Optical Memory 2010 2010年 口頭発表(招待・特別)
  • Detection of Structural Defects of Extremely Low Concentrations in Commercial Synthetic Silica glass  [通常講演]
    M. Ono, A. Koike, T. Ogawa, M. Takata, S. Kikugawa
    CLEO/QELS 2009 2009年06月 口頭発表(一般)
  • Fluorine-Doped Silica Fiber with High Transparency and Resistivity to Deep Ultra Violet Light  [通常講演]
    M. Ono, A. Koike, K. Okada, T. Ogawa
    Conference on Lasers and Electro-Optics 2008 2008年 ポスター発表
  • Electron emission characteristics of hydrogen doped 12CaO·7Al2O3 electride for PDP  [通常講演]
    S. Webster, M. Ono, S. Ito, H. Kajiyama, T. Shinoda, H. Hosono
    The 14th International Display Workshop (IDW'07) 2007年11月 口頭発表(一般)
  • Highly efficient field emission from a spin-coated electride powder  [通常講演]
    M. Ono, S. Narushima, S. Ito, H. Hosono
    Society of Information Display '06 2006年05月 口頭発表(一般)
  • Large Optical Nonlinearity in 1D and 2D Cuprates Investigated by Third Harmonic Generation Spectroscopy  [通常講演]
    小野 円佳
    Synthetic Metals 2003年 口頭発表(一般)
  • Gigantic Optical Nonlinearity In One-Dimensional Mott Insulators  [通常講演]
    Hiroshi Okamoto, H. Kishida, Madoka Ono, M. Yamashita
    Nonlinear Optics 2002年 口頭発表(一般)

その他活動・業績

受賞

  • 2022年03月 応用物理学会 第12回(2021年度)女性研究者研究業績賞(小舘香椎子賞)
     酸化物ガラスの構造制御による高機能化 
    受賞者: 小野 円佳
  • 2021年09月 日本セラミクス協会 ナノスケール原子相関セッション セッション奨励賞
     高温高圧処理したシリカガラスの高エネルギーX線を用いた構造解析 
    受賞者: 田邊泰人;Khurelbaatar Zagarzusem,Melbert Jeem;藤岡正弥;小野円佳;西井準治;赤塚公章;小野円佳;小原真司
  • 2019年09月 日本光学会 2018年日本の光学研究(雑誌「光学」2019、9月号)
     高温高圧処理したシリカガラスのレイリー散乱抑制に関する研究 
    受賞者: Madoka Ono, Shuhei Aoyama, Masanori Fujinami, and Setsuro Ito
  • 2019年05月 一般社団法人 レーザー学会 第43回レーザー学会奨励賞
     
    受賞者: 小野 円佳
  • 2001年03月 東京大学新領域創成科学研究科 修士論文優秀講演賞
     
    受賞者: 小野 円佳

共同研究・競争的資金等の研究課題

教育活動情報

主要な担当授業

  • 物質化学(ナノフォトニクス材料論)
    開講年度 : 2021年
    課程区分 : 修士課程
    開講学部 : 総合化学院
    キーワード : フォトニクス材料、フォトニクスデバイス、サプ波長光学、プラズモニクス、光波解析、微細加工技術、ナノ分光技術、電子顕微鏡解析
  • 大学院共通授業科目(一般科目):自然科学・応用科学
    開講年度 : 2021年
    課程区分 : 修士課程
    開講学部 : 大学院共通科目
    キーワード : Science education, materials science, chemistry, physics, molecular science, nanoscience, nanotechnology, energy harvesting
  • ナノ物性化学
    開講年度 : 2021年
    課程区分 : 学士課程
    開講学部 : 理学部
    キーワード : 超伝導、ナノ空間、電子スピン、化学反応、選択性と統計性、数理科学、機械学習、情報理論、力学系

大学運営

委員歴

  • 2021年06月 - 現在   International Congress of Glass 2022 symposium chair
  • 2020年12月 - 現在   国際ガラス年日本実行委員会   国際ガラス年日本実行委員会 実行委員 (フォトニクス分科会 会長)
  • 2017年04月 - 現在   光産業技術振興会 光材料・応用技術研究会   幹事
  • 2020年04月 - 2020年09月   日本セラミックス協会第33回秋季シンポジウム   開催地実行委員
  • 2018年04月 - 2020年03月   応用物理学会 フォトニクス分科会   幹事・フォトニクスニュース編集長
  • 2018年04月 - 2019年07月   International Congress on Glass   International Program Committe member
  • 2015年03月 - 2017年12月   日本セラミックス協会   Journal of the Ceramics Society of Japan Editorial board

社会貢献活動

  • 【Live配信(リアルタイム配信)】 ガラスの光学特性・熱物性・機械特性の基礎
    期間 : 2021年10月15日 - 2021年10月15日
    役割 : 出演
    主催者・発行元 : サイエンス&テクノロジー
    イベント・番組・新聞雑誌名 : https://www.science-t.com/seminar/B211015.html


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