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2007 Fiscal Year Annual Research Report

ゲスト成分が誘起するソフトマターメン構造の相転移ダイナミクス

Planned Research

Project AreaCreation of non-equilibrium soft matter physics: Structure and dynamics of mesoscopic systems
Project/Area Number 18068007
Research InstitutionOchanomizu University

Principal Investigator

今井 正幸  Ochanomizu University, 大学院・人間文化創成科学研究科, 教授 (60251485)

Co-Investigator(Kenkyū-buntansha) 中谷 香織  お茶の水女子大学, 大学院・人間文化創成科学研究科, 助教 (50323861)
田中 肇  東京大学, 生産技術研究所, 教授 (60159019)
奥村 剛  お茶の水女子大学, 大学院・人間文化創成科学研究科, 教授 (80271500)
Keywordsソフトマター / モデル生体膜 / 両親媒性分子膜とヌロイド複合系 / 構造化表面 / 接着 / 両親媒性分子膜と高分子複合系 / 濡れ転移 / シミュレーション
Research Abstract

本グループは、異種なソフトマターを混合するなど系をエキゾチックな状態において、その状態で観察される特異な現象の理解とそれを用いたメソ構造の制御を目指すものである。以下の3つのテーマについて研究を進めた。
1.脂質複合膜の非平衡ダイナミクス
生体膜の重要な機能の一つである接着について、膜の自発曲率を制御することによりリガンドやレセプター等を外部から加えずに制御できる事を見いだした。脂質の負の自発曲率をもつ領域同士の接着により、曲げ弾性エネルギーと界面エネルギーの減少により接着状態が安定化されるモデルを提案し、蛍光脂質のベシクル間移動実験によりその正当性を実験的に示した。
2.両親媒性分子膜とコロイド粒子の静的及び動的結合
クサビセル中のラメラ相の秩序化キネティクスを詳細に調べたところ、相転移開始後からラメラ相形成のキネティクスに起因した階段状の線欠陥が形成されるが、非常に長い時間にわたり弾性エネルギーを下げるために欠陥構造の幾何学的組み換えが起き、階段構造の周期間隔も変化していく様が観察された。
3.複合表面等での濡れの非平衡ダイナミクス
表面に凸凹などの構造がある構造化表面での撥水性の転移について、核生成の場合に、接触角履歴の効果を取り入れ、状態間遷移にかかわるエネルギーランドスケープを計算した。実験で発見された目玉焼きのような滴の状態を理論的に予言できるようになった。

  • Research Products

    (31 results)

All 2008 2007 Other

All Journal Article (20 results) (of which Peer Reviewed: 20 results) Presentation (9 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Linear Viscoelasticity of Entangled Wormlike Micelles Bridged by Telechelic Polymers: An Experimental Model for a Double Transient Network2008

    • Author(s)
      K. Nakaya-Yaegashi, L. Ramos, H. Tabuteau and C. Ligoure
    • Journal Title

      J. Rheology 52

      Pages: 359-377

    • Peer Reviewed
  • [Journal Article] Repulsive inter-lamellar interaction induced by addition of colloidal particles2007

    • Author(s)
      Y. Suganuma, M. Imai, and K. Nakaya
    • Journal Title

      J. Applied Crystallography 40

      Pages: 303-306

    • Peer Reviewed
  • [Journal Article] Generic kinetic pathway of phase separation of deeply quenched polymer solutions: Transient gelation2007

    • Author(s)
      T. Konishi and H. Tanaka
    • Journal Title

      Phys. Rev. B 76

      Pages: 220201(1-4)

    • Peer Reviewed
  • [Journal Article] Generic kinetic pathway of phase separation of deeply quenched polymer solutions: Transient gelation2007

    • Author(s)
      T. Koyama and H. Tanaka
    • Journal Title

      Europhys. Lett. 80

      Pages: 68002(1-6)

    • Peer Reviewed
  • [Journal Article] Correlation between Dynamic Heterogeneity and Medium-Range Order in Two-Dimensional Glass-Forming Liquids2007

    • Author(s)
      T. Kawasaki, T. Araki, and H. Tanaka
    • Journal Title

      Phys. Rev. Lett. 99

      Pages: 215701(1-4)

    • Peer Reviewed
  • [Journal Article] The Ulriafast Dynamics of Hydrogen-Bonded Liquids: Molecular Structure-Depement Occurrence of Normal Arrhenius of Fractional Stokes-Einstein-Debye Rotational Diffusive Relaxation2007

    • Author(s)
      N.T. Hunt, A.R. Turner, H. Tanaka, and K. Wynne
    • Journal Title

      J. Phys. Chem. B 111

      Pages: 9634-9643

    • Peer Reviewed
  • [Journal Article] Nucleation of lamellar domains from a sponge phase under shear flow: Shape selection of nuclei in a nonequilibrium steady state2007

    • Author(s)
      H.Miyazawa and H. Tanaka
    • Journal Title

      Phys. Rev. B 76

      Pages: 011513(1-9)

    • Peer Reviewed
  • [Journal Article] Measuring colloidal interactions with confocal microscopy2007

    • Author(s)
      C, P. Royall, A.A. Louis and H. Tanaka
    • Journal Title

      J. Chem. Phys. 127

      Pages: 58003(1-8)

    • Peer Reviewed
  • [Journal Article] Spontaneous coarsening of a colloidal network driven by self-generated mechanical stress2007

    • Author(s)
      H. Tanaka and T. Araki
    • Journal Title

      Europys. Lett. 79

      Pages: 58003(1-6)

    • Peer Reviewed
  • [Journal Article] Bridging length scales in colloidal liquids and interfaces from near-critical divergence to single partcles2007

    • Author(s)
      C. Royall, D.G.A.L Aarts, and H. Tanaka
    • Journal Title

      Nature Phys. 9

      Pages: 636-640

    • Peer Reviewed
  • [Journal Article] Control of the Liquid-Liquid Transition in a Molecular Liquid by Spatial confinement2007

    • Author(s)
      R. Kurita and H. Tanaka
    • Journal Title

      Phys. Rev. Lett. 98

      Pages: 235701(1-4)

    • Peer Reviewed
  • [Journal Article] Phase-ordering kinetics of the liquid-liquid transition in single-component molecular liquids2007

    • Author(s)
      R. Kurita and H. Tanaka
    • Journal Title

      J. Chem, Phys. 126

      Pages: 204505(1-8)

    • Peer Reviewed
  • [Journal Article] Microscopic structural evolution during the liquid-liquid transition in triphenyl phosphite2007

    • Author(s)
      R, Kurita, Y. Shinohara, Y. Amemiya, and H. Tanaka
    • Journal Title

      J. Phys, : Condens. Matter 19

      Pages: 152101(1-8)

    • Peer Reviewed
  • [Journal Article] Spontaneous Onion-Structure Formation from Planar Lamellar Nuclei2007

    • Author(s)
      Y. Iwashita and H, Tanaka
    • Journal Title

      Phys. Rev. Lett. 98

      Pages: 145703(1-4)

    • Peer Reviewed
  • [Journal Article] Lifetime of a two-dimensional air bubble2007

    • Author(s)
      A. Eri and K. Okumura
    • Journal Title

      Phys. Rev. E(Rapid Communications) 76

      Pages: 060601(1-4)

    • Peer Reviewed
  • [Journal Article] An inversion method based on the Legendre transformation applied to discontinuous phase transitions2007

    • Author(s)
      N. Sato and K. Okumura
    • Journal Title

      J. Phys. Soc. Jpn. 76

      Pages: 114008(1-4)

    • Peer Reviewed
  • [Journal Article] Crack-tip stress concentriation and mesh size in networks2007

    • Author(s)
      S. Nakagawa and K. Okumura
    • Journal Title

      J. Phys. Soc. Jpn. 76

      Pages: 114801(1-4)

    • Peer Reviewed
  • [Journal Article] Wicking in a forest of micro-pillars2007

    • Author(s)
      C. Ishino, M. Reyssat, E. Reyssat, K. Okumura, and David Quere
    • Journal Title

      Europhys. Lett. 79

      Pages: 560050(1-5)

    • Peer Reviewed
  • [Journal Article] Shape deformation of ternary vesicles coupled with phase separation

    • Author(s)
      M. Yanagisawa, M. Imai, and T. Taniguchi
    • Journal Title

      Phys. Rev. Lett. 印刷中

    • Peer Reviewed
  • [Journal Article] Adhesion of Binary Giant Vesicles Containing Negative Spontaneous Curvatrue Lipids Induced by Phase Separation

    • Author(s)
      Y. Sakuma, M. Imai, M. Yanagisawa and S, Komura
    • Journal Title

      European Physical Journal E 印刷中

    • Peer Reviewed
  • [Presentation] Nature of Liquid-Liquid Transition in Single-Component Molecular Liquids2007

    • Author(s)
      Hajime Tanaka
    • Organizer
      Joint Conference of JELG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry of Japan-Molecular Approaches to complex Liquids System
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      20071121-25
  • [Presentation] Mechanical instability in phase separation. fracture, and cavitation2007

    • Author(s)
      Hajime Tanaka
    • Organizer
      International Soft Matter Conference
    • Place of Presentation
      Aachen, Germany
    • Year and Date
      20071001-04
  • [Presentation] Isotropic-Nematic Transition of Microemulsion Spheres Induced by Polymer Confinement2007

    • Author(s)
      Kaori Nakaya
    • Organizer
      International Soft Matter Conference
    • Place of Presentation
      Aachen, Germany
    • Year and Date
      20071001-04
  • [Presentation] Domain growth on deformed vesicles2007

    • Author(s)
      Masayuki Imai
    • Organizer
      International Soft Matter Conference 2007
    • Place of Presentation
      Aachen, Germany
    • Year and Date
      20071001-04
  • [Presentation] Kinetics and Control of Liquid-Liquid Transition2007

    • Author(s)
      Hajime Tanaka
    • Organizer
      The 5th International Workshop on Complex Systems
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      20070925-28
  • [Presentation] Shape Deformation of Vesicles Coupled with Phase separation2007

    • Author(s)
      Masayuki Imai
    • Organizer
      The 5th International Workshop on Complex Systems
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      20070925-28
  • [Presentation] Many body hydrodynamic interactions in colloidal suspensions studied by a fluid particle dynamics method2007

    • Author(s)
      Hajime Tanaka
    • Organizer
      Mesoscale Modelling for Complex Fluids and Flows
    • Place of Presentation
      Oxford, United Kingdom
    • Year and Date
      20070725-27
  • [Presentation] Analytical solution of crack problems in nacre2007

    • Author(s)
      Ko Okumura
    • Organizer
      6th International Congress on Industrial and Applied Mathematics 2007
    • Place of Presentation
      Zurich, Switzerland
    • Year and Date
      20070716-20
  • [Presentation] Wetting on textured surfaces and fate of a two-dimensional bubble2007

    • Author(s)
      Ko Okumura
    • Organizer
      Internatinal mini-symposium on liquids
    • Place of Presentation
      Okayama, Japan
    • Year and Date
      2007-05-11
  • [Book] ソフトマターの秩序形成2007

    • Author(s)
      今井正幸
    • Total Pages
      399
    • Publisher
      シュプリンガー・ジャパン
  • [Remarks]

    • URL

      http://softmatter.jp/

URL: 

Published: 2010-02-04   Modified: 2016-04-21  

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