Research activity information

• Market declines triggered by the deviation from the random walk
  Mieko Tanaka-Yamawaki; Yumihiko S. Ikura
  Evolutionary and Institutional Economics Review, 21, 2, 217, 225, Springer, Sep. 2024, [Peer-reviewed], [International Magazine]
• Erratum: Oscillation and Synchronization in the Combustion of Candles (J. Phys. Chem. A (2009) 113:29 (8164-8168) DOI: 10.1021/jp901487e)
  Hiroyuki Kitahata; Junji Taguchi; Masaharu Nagayama; Tatsunari Sakurai; Yumihiko Ikura; Atsushi Osa; Yutaka Sumino; Masanobu Tanaka; Etsuro Yokoyama; Hidetoshi Miike
  Journal of Physical Chemistry A, 126, 41, 7557, 20 Oct. 2022, [Peer-reviewed]
  Scientific journal
• Tracking the Annual Changes of Statistical Property of a Stock Index in the Arrowhead Market
  Mieko Tanaka-Yamawaki; Yumihiko S. Ikura
  Procedia Computer Science, 176, 1626, 1632, Elsevier, Sep. 2020, [Peer-reviewed], [International Magazine]
• Dynamical Quorum Sensing in Non-Living Active Matter
  Yui Matsuda; Kota Ikeda; Yumihiko Ikura; Hiraku Nishimori; Nobuhiko J. Suematsu
  Journal of the Physical Society of Japan, 88, 093002, Aug. 2019, [Peer-reviewed]
  English, Scientific journal
• Relaxation dynamics of the Marangoni convection roll structure induced by camphor concentration gradient
  Hiroyuki Kitahata; Hiroya Yamamoto; Misato Hata; Yumihiko S. Ikura; Satoshi Nakata
  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 520, 436, 441, May 2017, [Peer-reviewed]
  English, Scientific journal
• Periodic Oscillatory Motion of a Self-Propelled Motor Driven by Decomposition of H2O2 by Catalase
  Satoshi Nakata; Mio Nomura; Hiroya Yamamoto; Shunsuke Izumi; Nobuhiko J. Suematsu; Yumihiko Ikura; Takashi Amemiya
  ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 56, 3, 861, 864, Jan. 2017, [Peer-reviewed]
  English, Scientific journal
• Tough Physical Double-Network Hydrogels Based on Amphiphilic Triblock Copolymers.
  Zhang HJ; Sun TL; Zhang AK; Ikura Y; Nakajima T; Nonoyama T; Kurokawa T; Ito O; Ishitobi H; Gong JP
  Advanced materials (Deerfield Beach, Fla.), 28, 24, 4884, 4890, Jun. 2016, [Peer-reviewed]
• Acceleration or deceleration of self-motion by the Marangoni effect
  Yui Matsuda; Nobuhiko J. Suematsu; Hiroyuki Kitahata; Yumihiko S. Ikura; Satoshi Nakata
  CHEMICAL PHYSICS LETTERS, 654, 16, 92, 96, Jun. 2016, [Peer-reviewed]
  English, Scientific journal
• Coupled instabilities of surface crease and bulk bending during fast free swelling of hydrogels
  Riku Takahashi; Yumihiko Ikura; Daniel R. King; Takayuki Nonoyama; Tasuku Nakajima; Takayuki Kurokawa; Hirotoshi Kuroda; Yoshihiro Tonegawa; Jian Ping Gong
  SOFT MATTER, 12, 23, 5081, 5088, 2016, [Peer-reviewed]
  English, Scientific journal
• Bifurcation phenomena of two self-propelled camphor disks on an annular field depending on system length
  Kei Nishi; Ken Wakai; Tomoaki Ueda; Miyu Yoshii; Yumihiko S. Ikura; Hiraku Nishimori; Satoshi Nakata; Masaharu Nagayama
  PHYSICAL REVIEW E, 92, 2, 022910 1, 10, Aug. 2015, [Peer-reviewed]
  English, Scientific journal
• Motion with Memory of a Self-Propelled Object
  Satoshi Nakata; Misato Hata; Yumihiko S. Ikura; Eric Heisler; Akinori Awazu; Hiroyuki Kitahata; Hiraku Nishimori
  JOURNAL OF PHYSICAL CHEMISTRY C, 117, 46, 24490, 24495, Nov. 2013, [Peer-reviewed]
  English, Scientific journal
• Chemical Wave Propagation Preserved on an Inhibitory Field in the Ruthenium-Catalyzed Belousov-Zhabotinsky Reaction
  Satoshi Nakata; Takato Ezaki; Yumihiko S. Ikura; Hiroyuki Kitahata
  JOURNAL OF PHYSICAL CHEMISTRY A, 117, 41, 10615, 10618, Oct. 2013, [Peer-reviewed]
  English, Scientific journal
• Collective motion of symmetric camphor papers in an annular water channel
  Yumihiko S. Ikura; Eric Heisler; Akinori Awazu; Hiraku Nishimori; Satoshi Nakata
  PHYSICAL REVIEW E, 88, 1, 012911 1, 5, Jul. 2013, [Peer-reviewed]
  English, Scientific journal
• Reciprocating Motion of a Self-Propelled Object on a Molecular Layer with a Local Minimum and a Local Maximum Isotherm
  Satoshi Nakata; Tatsuya Miyaji; Tomoaki Ueda; Taisuke Sato; Yumihiko S. Ikura; Shunsuke Izumi; Masaharu Nagayama
  JOURNAL OF PHYSICAL CHEMISTRY C, 117, 12, 6346, 6352, Mar. 2013, [Peer-reviewed]
  English, Scientific journal
• Oscillation of a Polymer Gel Entrained with a Periodic Force
  Takaya Shiota; Yumihiko S. Ikura; Satoshi Nakata
  JOURNAL OF PHYSICAL CHEMISTRY B, 117, 7, 2215, 2220, Feb. 2013, [Peer-reviewed]
  English, Scientific journal
• Reciprocating Motion of a Self-Propelled Object on a Molecular Layer
  Satoshi Nakata; Tatsuya Miyaji; Taisuke Sato; Miho Hoshikawa; Yumihiko S. Ikura; Shunsuke Izumi
  CHEMPHYSCHEM, 13, 18, 4129, 4133, Dec. 2012, [Peer-reviewed]
  English, Scientific journal
• Mode Change in the Self-Motion of a Benzoquinone Disk Coupled with a NADPH System
  Satoshi Nakata; Yui Matsuda; Yumihiko S. Ikura; Akira Takeda; Shunsuke Izumi
  CHEMPHYSCHEM, 13, 2, 520, 524, Feb. 2012, [Peer-reviewed]
  English, Scientific journal
• Suppression and Regeneration of Camphor-Driven Marangoni Flow with the Addition of Sodium Dodecyl Sulfate
  Yumihiko S. Ikura; Ryoichi Tenno; Hiroyuki Kitahata; Nobuhiko J. Suematsu; Satoshi Nakata
  JOURNAL OF PHYSICAL CHEMISTRY B, 116, 3, 992, 996, Jan. 2012, [Peer-reviewed]
  English, Scientific journal
• Mode-selection and mode-switching of an autonomous motor composed of a camphor rotor and a mobile loop
  Satoshi Nakata; Ryoichi Tenno; Yumihiko S. Ikura
  CHEMICAL PHYSICS LETTERS, 514, 1-3, 159, 163, Sep. 2011, [Peer-reviewed]
  English, Scientific journal
• Mode-Switching of the Self-Motion of a Camphor Boat Depending on the Diffusion Distance of Camphor Molecules
  Suematsu; Nobuhiko J; Ikura, Yumihiko; Nagayama, Masaharu; Kitahata, Hiroyuki; Kawagishi, Nao; Murakami, Mai; Nakata, Satoshi
  JOURNAL OF PHYSICAL CHEMISTRY C, 114, 21, 9876, 9882, AMER CHEMICAL SOC, 03 Jun. 2010, [Peer-reviewed]
  Scientific journal, We demonstrated mode-switching of self-motion coupled with diffusion of molecules at a solid/liquid interface. A camphor boat moved spontaneously on water and the mode of self-motion depended on the setup of the boat. When a camphor disk was connected to the center of a larger plastic plate, intermittent motion (alternating between rest and rapid motion) was observed. When the position of the camphor disk was changed from the center to one of its edges, the period of intermittent motion decreased, and intermittent motion changed to continuous motion. The features of this self-motion and mode-switching were qualitatively reproduced by a numerical calculation using a mathematical model that incorporates the distribution of camphor molecules at the solid/liquid interface.
• Oscillation and Synchronization in the Combustion of Candles
  Kitahata Hiroyuki; Taguchi Junji; Nagayama Masaharu; Sakurai Tatsunari; Ikura Yumihiko; Osa Atsushi; Sumino Yutaka; Tanaka Masanobu; Yokoyama Etsuro; Miike Hidetoshi
  JOURNAL OF PHYSICAL CHEMISTRY A, 113, 29, 8164, 8168, 23 Jul. 2009, [Peer-reviewed]