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Molecular Dynamics of Enhanced Dynamics in Nanoporous Systems

Research Project

Project/Area Number 17K05570
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical physics/Fundamental condensed matter physics
Research InstitutionTokyo Institute of Technology

Principal Investigator

Habasaki Junko  東京工業大学, 物質理工学院, 助教 (10133331)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords分子動力学 / ナノ多孔質 / シリケートガラス / 拡散係数 / 加速ダイナミクス / ナノポーラス / 分子動力学シミュレーション / ナノイオニクス / 自己修復 / 動的不均一性 / 多孔質 / 自己組織化 / ストレス緩和 / イオニクス / ナノ材料
Outline of Final Research Achievements

Experimentally, it is known that ion dynamics are significantly accelerated in a porous system or a composite system containing a porous matrix. However, mechanism of this was not clear. In this study, molecular dynamics simulations were performed to elucidate the mechanism of accelerated dynamics in nanoporous lithium silicate systems. When the holes were introduced under the condition that the volume was constant, the diffusion coefficient of lithium ions increased with the decrease of the density. It was found that the increase of the diffusion coefficient starts from the short-time region, where the structure (cage) of the coordination polyhedron mainly formed by oxygen around Li becomes loose, and the frequency of the ion ejection motion increases. When the density is further reduced, larger voids develop, and the cage hardens in the remaining part, and with this change the diffusion coefficient decreases again.

Academic Significance and Societal Importance of the Research Achievements

多孔質系は、基礎分野、応用分野の両方でその重要性を増してきており、本研究の成果は、その理解に役立つものである。基礎分野では、物理学上の重要な未解決分野であるガラス転移の理解に寄与した。多孔質系はガラス転移を研究する上での新たな重要なプラットホームとして用いることができる。特に空孔を導入することでイオンダイナミクスの変調や、関連するガラス転移の問題において、配位多面体によるケージングの果たす役割の重要性を浮き彫りにした。応用分野でも、空孔の導入は、ダイナミクスのコントロールに用いることができるので、軽くて伝導性の高い材料の設計やドラッグデリバリー材料の設計などに重要な役割を果たすと考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (29 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (5 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results) Presentation (10 results) (of which Int'l Joint Research: 10 results,  Invited: 10 results) Book (3 results) Remarks (7 results)

  • [Int'l Joint Research] Complutense University of Madrid(スペイン)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Pisa University(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Pisa(イタリア)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Complutense University of Madrid(Spain)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] University of Pisa(Italy)

    • Related Report
      2017 Research-status Report
  • [Journal Article] A Molecular Dynamics Study of Enhanced Dynamics and Self-Healing Processes in Nano-Porous Lithium Metasilicate Systems2020

    • Author(s)
      Junko Habasaki
    • Journal Title

      International Journal of Applied Glass Science,

      Volume: ”00” Issue: 3 Pages: 1-11

    • DOI

      10.1111/ijag.15511

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heterogeneous-homogeneous transition and anomaly of density in SPC/E water examined by molecular dynamics simulations2019

    • Author(s)
      Habasaki Junko
    • Journal Title

      Physica A: Statistical Mechanics and its Applications

      Volume: 527 Pages: 121391-121391

    • DOI

      10.1016/j.physa.2019.121391

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heterogeneous dynamics in nanoporous materials examined by molecular dynamics simulations -effects of modification of caged ion dynamics-2018

    • Author(s)
      Habasaki Junko、Ngai K.L.
    • Journal Title

      Journal of Non-Crystalline Solids

      Volume: 498 Pages: 364-371

    • DOI

      10.1016/j.jnoncrysol.2018.03.026

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nearly Constant Loss (NCL) in Lithium Metasilicate Glass at Low TemperaturesーAnisotropic and Dynamical Caging from Molecular Dynamics Simulations2017

    • Author(s)
      Habasaki Junko、Ngai K. L.
    • Journal Title

      J. Phys. Chem. C

      Volume: 121 Issue: 25 Pages: 13729-13737

    • DOI

      10.1021/acs.jpcc.7b03132

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Self-Organization of Voids and Self-Healing Processes in Porous Lithium Silicate Glasses: A study by Molecular Dynamics Simulations2019

    • Author(s)
      Junko Habasaki
    • Organizer
      5th Global Congress & Expo on Materials Science & Engineering. (GCEMSE-2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Self-organization and self-healing processes in porous silicates examined by molecular dynamics simulations2019

    • Author(s)
      Junko Habasaki
    • Organizer
      Materials Science 2019 Osaka Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A Role of Molecular Dynamics Simulations in Recent Developments of Nanotechnology -Enhanced Dynamics and Self-Healing Processes in Nano-Porous Silicate2019

    • Author(s)
      Junko Habasaki
    • Organizer
      2nd World Congress on Materials Science and Engineering (WCMSE-2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Self-organization and self-healing processes in porous silicates examined by molecular dynamics simulations (Keynote lecture)2018

    • Author(s)
      J. Habasaki
    • Organizer
      Nanotechnology and MaterialScience Congress, Nanotech-2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Heterogeneous Dynamics in porous lithium disilicate systems Examined by Molecular Dynamics Simulations,2018

    • Author(s)
      J. Habasaki
    • Organizer
      3rd Global Congress & Expo on Materials Science & Engineering. (GCEMSE-2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular Dynamics Study of Enhanced and Heterogeneous Dynamics in Porous Lithium Disilicates2018

    • Author(s)
      J. Habasaki
    • Organizer
      The ICG Annual Meeting 2018 (ICG2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On the Mechanism of the Enhanced Dynamics in Porous Lithium Silicates Examined by Molecular Dynamics Simulations2018

    • Author(s)
      Junko Habasaki
    • Organizer
      BIT’s 6th Annual Conference of AnalytiX-2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A Role of Caged Ion Dynamics for the Enhanced Diffusion in Porous Ionic Conductors、Junko Habasaki, San Carlos, Brazil, 9-12th July(2017).2017

    • Author(s)
      Junko Habasaki
    • Organizer
      3rd International Workshop on Molecular Dynamics Simulations of Glasses and Amorphous Materials (San carlos, Brazil)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Long-Range Charge Order and Electrostatic Screening in Ionic Liquids and Concentrated Electrolyte Solutions2017

    • Author(s)
      Anna Gubarevich and Junko Habasaki
    • Organizer
      8th International Discussion Meeting on Relaxations in Complex Systems (IDMRCS8) July23-28 Wisla, Poland
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular Dynamics of Ionic Transport in Nano-porous systems2017

    • Author(s)
      Junko Habasaki
    • Organizer
      8th International Discussion Meeting on Relaxations in Complex Systems (IDMRCS8) July23-28, Wisla, Poland
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] Molecular Dynamics of Nanostructures and Nanoionics: Simulations in Complex Systems2020

    • Author(s)
      Junko Habasaki
    • Total Pages
      400
    • Publisher
      Jenny Stanford Publishing Pte Ltd
    • ISBN
      9789814800778
    • Related Report
      2019 Annual Research Report
  • [Book] Encyclopedia of Glass Science, Technology, History, and Culture 印刷中2019

    • Author(s)
      Edited by P. Richet (Junko Habasaki, An author of a chapter)
    • Total Pages
      1000
    • Publisher
      Wiley
    • ISBN
      1118799429
    • Related Report
      2018 Research-status Report
  • [Book] Dynamics of glassy, crystalline and liquid ionic conductors2017

    • Author(s)
      J. Habasaki, C. Leon and K.L. Ngai
    • Total Pages
      600
    • Publisher
      Springer International
    • Related Report
      2017 Research-status Report
  • [Remarks] Publication list -Junko Habasaki

    • URL

      http://t2r2.star.titech.ac.jp/cgi-bin/researcherpublicationlist.cgi?q_researcher_content_number=CTT100381175&alldisp=1&lv=en

    • Related Report
      2019 Annual Research Report
  • [Remarks] ResearchGate Habasaki

    • URL

      https://www.researchgate.net/profile/Junko_Habasaki2

    • Related Report
      2019 Annual Research Report
  • [Remarks] 多孔質イオン伝導性物質における加速ダイナミクス

    • URL

      https://www.researchgate.net/project/Molecular-Dynamics-Studies-on-the-Enhanced-Dynamics-in-Porous-Ion-Conductors

    • Related Report
      2018 Research-status Report
  • [Remarks] Star search 巾崎 潤子

    • URL

      https://search.star.titech.ac.jp/pursuer.act?k=HpYfkjydgo&ssToken=02b69e019e6d77868d1121baf1ec1476&from=basic&page=&sort=&order=

    • Related Report
      2018 Research-status Report
  • [Remarks] 応化系ニュースー巾崎潤子助教が書籍「Dynamics of Glassy, ---」を出版

    • URL

      https://educ.titech.ac.jp/cap/news/2016_12/053060.html

    • Related Report
      2017 Research-status Report
  • [Remarks] ReserchGate Junko Habasaki

    • URL

      https://www.researchgate.net/profile/Junko_Habasaki2

    • Related Report
      2017 Research-status Report
  • [Remarks] 東工大ニュースー創設100周年 平成29年度手島精一記念研究賞の授与式を挙行

    • URL

      https://www.titech.ac.jp/news/2018/040745.html

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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