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複雑液体の物理-A03 計算機シミュレーションによる解析-

Research Project

Project/Area Number 07236102
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionNagoya University

Principal Investigator

土井 正男  名古屋大学, 工学研究科, 教授 (70087104)

Co-Investigator(Kenkyū-buntansha) 星野 公三  広島大学, 総合科学部, 教授 (30134951)
藤原 毅夫  東京大学, 工学部, 教授 (90011113)
樋渡 保秋  金沢大学, 理学部, 教授 (20019491)
高野 宏  慶応義塾大学, 理工学部, 助教授 (90154806)
川勝 年洋  東京都立大学, 理学部, 助教授 (20214596)
Project Period (FY) 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥69,800,000 (Direct Cost: ¥69,800,000)
Fiscal Year 1997: ¥11,000,000 (Direct Cost: ¥11,000,000)
Fiscal Year 1996: ¥27,800,000 (Direct Cost: ¥27,800,000)
Fiscal Year 1995: ¥31,000,000 (Direct Cost: ¥31,000,000)
Keywords動的平均場近似 / ミセル形式 / 自己組織構造 / 界面活性剤 / 高分子緩和 / ガラス状態 / 第一原理分子動力学 / 超臨界状態 / ブロック高分子 / 自己組織・構造 / 排除体積効果 / 炭素クラスター / ガラス転移 / 擬ポテンシャル
Research Abstract

土井は昨年に引き続いて、動的平均場法の拡張を行った。稀簿溶液における高分子のミセル形式を扱うために、高分子セグメントの座標の時間変化を記述する新しい動的平均場法を開発した。また壁にグラフトされた高分子について、平均場の計算とモンテカルロ法の計算を比較し、xパラメータをどのように決めるべきかを検討した。
川勝は、高分子界面活性剤(ブロック共重合体)を含む高分子混合系における相分離過程のモデルを提案し、界面活性剤の吸着した界面が相分離動力学に及ぼす影響を数値的に明らかにした。また、動的平均場理論に応力場を導入することで、非平衡な鎖配位をもつ高分子濃厚系の粘弾性効果を記述するモデルを提案した。
高野は、ランダム媒質中の1本の高分子鎖の緩和、濃厚高分子系中の1本の高分子鎖の緩和をシミュレーションを用いて調べた。緩和現象に関してレプテーション的挙動が見えるのに必要なセグメント数が、重心拡散に関するそれより大きいことを示唆する結果を得た。
樋渡は、水(氷)、セレニウム元素系等の複雑な系について、主として分子動力学シミュレーションの方法を用いて考察した。簡単なモデル系の過冷却液体やガラス状態についてもダイナミカルな問題を考察した。
藤原は、Mauri-Galliの変分関数と局在基底関数を用いて第一原理分子動力学法におけるオーダーN法のアルゴリズムを提案した。局在基底関数に関しては窓関数の方法を用いる。
星野は、第一原理分子動力学シミュレーションにより、(1)超臨界領域における流体セレンの半導体・金属転移の微視的機構を解明した、(2)液体Li-Na合金の相分離の微視的機構を解明した。また、大規模分子動力学シミュレーションにより、液体水銀の音速の密度依存性の起源を解明した。

Report

(3 results)
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (62 results)

All Other

All Publications (62 results)

  • [Publications] T.Kawakatsu: "Effects of changes in the chain conformation on the Kinetics of Order-Disorder Transitions in Blockcopolymer Melts" Rhys,Rev.E. 56・NO3. 3240-3250 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] N.Torikai: "Neutron Reflection Studies on Segment Distribution of Block Chains in Lamellar Microphase-Separated Structures" Macromolecules. 30. 2907- (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Koseki: "Monte Carlo Study of Relaxation Modes of a Single Polymer Chain" J.Phys.Soc.Jpn.66・No6. 1631-1637 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] H.Hirao: "Molecular Dynamics Study of Relaxation Modes of a Single Polymer Chain" J.Phys.Soc.Jpn.66・NO11. 3399-3405 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] R.Hasegawa: "Adsorption Dynamics-Extension of the Self-Consistent Field Theory to Dynamics Problem" Macromolecules. 30・No10. 3086-3089 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] R.Hasegawa: "Dynamical Mean Field Calculation of Grafting Reaction of End-functionalized Poly" Macromolecules. 30・No18. 5490-5493 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Hoshi: "Towards lange-scale fully-selfconsistent LDA-electronic Structure calculations cOrder-N Method" in "Physics in Complex Liquids",Edited by F.Yonezawa.K.Tsuji,K.Kaji,M.Doi and J.Fujiwara World Scientific. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] F.Shimojo: "First-principles molecular-dynamics simulation of liquid rubidium under high pressure" Phys Rev.B. 55.No9. 5708-5711 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.Ogawa: "Viscosity equation for concentrated suspension of charged colloidal particles" J.Rheology. 41.NO3. 769-785 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Doi: "Dynamics of Domains and Textures" in "Theoretical challenges in the Dynamics of Complex Fluiols". 293-314 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Jajiri: "Electrorheological effect in immiscible polymer blends" T.Rheology. 41. 335-341 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] R.Hasegawa: "Mesoscopic Models for Polymer Dynamics" Paper presented at International symposium on physics of Complex Liquids. (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Hashimoto: "Structural Transformations of Ice at High Pressures via Molecular Dynamics Simulations II" Mol.Sim.18. 395-406 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Uehara: "First-Principles Molecular Dynamics Simulations for \Se-{8}\ and \Se-8^rt\ Culsters" Mol.Sim.19. 75-84 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Muranaka: "Structualheterogeneity in supertoled liquids and glasses" Proceeding of Vigo '97. 387-397 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Fujiwara: "Optimized Ultrasoft Pseudopotentials" J.Phys.Soc.Jpn.66・NO6. 1723-1729 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Hoshi: "Fully-Selfconsistent Electronic-Structure Calculation using Nororthogonal Localized Orbitals within a Finite-Difference Real-Space Scheme and Ultrasoft pseudopotential" J.Phys.Soc.Jpn.66・NO12. (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Hoshi: "Electronic structure calculations and molecular dynamics using real-space method and optimized ultra-soft pseudopotential" "Frontier in Material Modeling and Design"edited by B.Raj and V.Kumar Springer-verlug Heidelberg. 51-58 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.Ogawa: "Forced Periodic and Qiasi-Periodic Patterns in Anisotropic Systems" J.de Physique II(France). 6.NO.2. 305-328 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Kawakatsu: "Computer Simulations of Phase Separations in Surfactant Solutions" Mol.Sin.16. 47-57 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T,Maeda: "Mean Field Monte Carlo Methods : Application to Nematic Transitions" J.Phys.Soc.Jpn.65・9. 2895-2899 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] R,Hasegawa: "Optimum Graft Density for Dispersing Particles in Palymer Melts" Macronolecules. 29・20. 6656-6662 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Masubuchi: "Conformational Dynamics of DNA during Biased Sionsoidal Field Gel Electrophoresis" Electrophoresis. 17. 1065-1074 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Kodama: "Shear Induced Instability of Lumellar Phase of Block Copolymer" Macromolecules. 29・7. 2652-2658 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T,Muranaka: "Study on the β Peak of X" for a Two-Dimensional Supercooled Fluid State via Molecular Dynamics Simulation" J.Molecular Simulation. 16. 387-397 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Muranaka: "Coupling between Jump Motion and Correlated Motions" Proceeding of YKIS 96. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Hashimoto: "Structural Transformations of Ice at High Pressures via Molecular Dynamics Simulations" J.Molecular Simulation. 18. 115-132 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 橋本保: "氷に関する最近の分子動力学シミュレーション-氷の構造相転移-" 日本雪氷学会誌・雪氷. 58・5. 422-424 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Hiwatari: "Molecular-Dynamics Similation for the Formation Process of a Fillerence Molecule" RIKEN Review. 14. 7-8 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Uehara: "First-Principle Molecular Dynamics Calulation of Selenium Clusters" Proceeding of the ISSPIC 8.

    • Related Report
      1996 Annual Research Report
  • [Publications] J,K,Harden: "The Effect of Added Triblock Copolymer on the Nonlinear Rjeology of Ordered Diblock Copolymer Mesophases" J,Rheology. 40・1. 187-197 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.Habasaki: "Fraction Excitation and Levy Flight Dynamics in Alkari Silicate Glasses" Phys.Rev.B. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.Habasaki: "Relaxation Processes and the Mixed Alkali Effect in Alkali Metasilicate Glasses" Presented MRS Fall Meetings invited Talk. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.Habasaki: "MD Study of the Mixed Alkali Effect in Terms of the Potential Surface in the Lithium-Patassium Metasilicate Glass" J.Non-Cryst.Solids. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.Habasaki: "Mixed Alkali Effect in Alkali Metadilicate Glasses" Proceedings of YKIS 96. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中崎潤子: "アルカリケイ酸塩ガラスの構造とダイナミクスガラス転移、緩和現象と混合アルカリ効果" 高分子論文集. 12月号. 1-10 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Fujiwara: "Scaling properties of wave functions and transport coefficients in qiasicrystals" Phys.Rev.B. 53・6. R2910-2913 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Hoshi: "Electric Structure Calculations and Molecular Dynamics using Real-pace Method and Optimized ultra-soft pseudopotential" Frontiers in Materials Modelling and Design (Springer). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Toshihiro Kawakatsu: "Phase Separation dynamics in the presence of surfactant molecules with an asymmetric shape" J.Chem.Phys.102. 2247-2253 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] J.Hendricks: "Confined semiflexible polymerchains" Phys.Rev.E51. 2658-2661 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Toshihiro Kawakatsu: "Computer simulations of phase separations in surfactant solutions"

    • Related Report
      1995 Annual Research Report
  • [Publications] Hiroshi Takano: "Relaxation Modes in Random Spin Systems" J.Phys.Soc.Jpn. 64. 3688-3698 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] J.Habasaki: "MD study of the mixed alkali effect in a lithium-potasium metasilicate glass" J.Non-Crystalline solids. 183. 12-21 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Muranaka: "Brelaxation in a highly supercooled state via molecular dynamics simulation" Phys.Rev.E51. 2735-2738 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Fujiwara: "Electronic Band Structure Properties in Quasicrystals and Approximants" Int.J.Mod.Phys.

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Hoshi: "Density functional molecular dynamics with real-space-finite difference" Phys.Rev.B52. R5459-R5462 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Mikami: "Transferability of Norm-Conserving Pseudopotential Jellium Model Test" J.Phys.Soc.Jpn.64. 1629-1943 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Yamamoto: "Electronic transport of 2-D Penrose lattice with random phason strain" Phys.Rev.B51. 8841-8847 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Arai: "Electronic Structures of Transition-Metal mono-Oxids in the Self-Interaction Corrected Local Spin Density Approximation" Phys.Rev.B51. 1477-1489 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] F.Shimojo: "First-principles molecular-dynamics simulation of expanded liquid rubidium" Phys.Rev.B52. 9320-9329 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Hiwatari: "Slow dynamics in supercooled fluids" J.Mol.Liquids. 65/66. 123-130 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Hiwatari: "Molecular-dynamics study of supercooled liquids and the theory of the glass transition" Phys.Soc.Japan. C3042. 329-339 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Odagaki: "Glass transition singularities and slow relaxation" Mat.Res.Soc.Symp.Proc.367. 337-346 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] J.Habasaki: "Origins of the two-step relaxation and the boson peak in an alkali silicate glass studied by molecular dynan sma" Phys.Rev.E52. 2681-2687 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Fujiwara: "Soaling properties of wave functions and transport coefficients in quasicrystals" Phys.Rev.B53. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Kobayashi: "Role of Canonical Orbital of Self-Interaction Corrected Local Spin Density Approximation in Deped System" Phys.Rev.B52. 13718-13721 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Munejiri: "An Accurate Method of Deriving Effective Pair Po from Structual Data of Liquid Alkali Metals" J.Phys.Soc.Jpn.64. 344-347 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Sonoda: "Screening in Metal Clusters" J.Phys.Soc.Jpn.64. 540-548 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Tsutomu Tomari: "Hysteresis and incubation in the dynamics of volume transition of spherical gels" Macromolecules. 28. 8334-8343 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] James L.Harden: "The Effect of Added Triblock Copolymer on the Nonlinear Rheology of Ordered Diblock Copolymer Mesophases" J.Rheology. 40. 187-197 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Hiroya Kodama: "Shear Induced Instability of Lamellar Phase of Block Copolymer" Macromolecules. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Yuichi Masubuchi: "Conformational Dynamics of DNA during Blased Sinsoidal Field Gel Electrophoresis" Electrophoresis. 1. (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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