• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Liquid crystal elastomers with tribological tunability

Research Project

Project/Area Number 20K20967
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 18:Mechanics of materials, production engineering, design engineering, and related fields
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Ohzono Takuya  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 上級主任研究員 (40344030)

Co-Investigator(Kenkyū-buntansha) 則包 恭央  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究グループ長 (50425740)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords液晶エラストマー / トライボロジー / 付着 / ゴム / ポリマー / 光制御 / 液晶エラストマ / ゴム複合体 / 力学物性 / 摩擦
Outline of Research at the Start

部材として、光照射や温度等の外場に応じて可逆的に自ら収縮・膨張する液晶高分子材料を用い、表面凹凸としてのシワにつき、その構造変化の機構を劇的に簡略化した部材の開発を目指し、その構成要素の基礎基盤の研究と構成デザインの最適化を通じ、トライボロジー応用を目指す。この機構に基づき、光刺激や温度等によってシワを変化させ、関連する表面機能の光学特性・付着特性・液体濡れ性等の表面機能が“しなやかに変わる表面部材”の実証を目指す。

Outline of Final Research Achievements

We focused on elastomeric materials with stimulus-responsive liquid crystalline properties (liquid crystalline elastomers) and conducted exploratory basic research on their application by utilizing their unique mechanical properties and compositing them with other materials, aiming to develop materials with switchable adhesion and desorption properties that are promising as materials for robot hand tips. As a result, we found the correlation between the monomer compositions and physical properties of liquid crystalline elastomers, the understanding of their semi-plastic properties, and the fact that their semi-plastic properties are superior in switching adhesion/desorption properties, especially on rough surfaces, and were able to show the expansion of the application potential of this material.

Academic Significance and Societal Importance of the Research Achievements

液晶エラストマというゴムでありながら液晶性を有する材料が、例えばロボットハンド指先の材料として活用できるという期待のもとで、その応用可能性を詳細に探ることを目的として研究を行った。その結果、特にその特異な力学特性はゴムとは異なって、ある程度の範囲で流動的に変形できる準塑性を発見し、その特異な特性を用いることで、粗面に対して比較的強く付着し、光等の刺激で脱離させられるという、これまでにない応用可能性を示すことで、本材料の応用可能性を明確化できた。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (20 results)

All 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (10 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Int'l Joint Research] Cambridge Univ.(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Cambridge University(英国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Enhanced photocontrollable dynamic adhesion of nematic elastomers on rough surfaces2022

    • Author(s)
      Ohzono Takuya、Koyama Emiko
    • Journal Title

      Polymer

      Volume: 260 Pages: 125377-125377

    • DOI

      10.1016/j.polymer.2022.125377

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of photo-isomerizable side groups on the phase and mechanical properties of main-chain nematic elastomers2022

    • Author(s)
      Ohzono Takuya、Koyama Emiko
    • Journal Title

      Polymer Chemistry

      Volume: 13 Issue: 18 Pages: 2694-2704

    • DOI

      10.1039/d2py00256f

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stabilized director buckling patterns in nematic elastomers and their dynamic optical effects2022

    • Author(s)
      Ohzono Takuya、Minamikawa Hiroyuki、Terentjev Eugene M.
    • Journal Title

      Communications Materials

      Volume: 3 Issue: 1

    • DOI

      10.1038/s43246-022-00253-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Photo‐Rewritable Glaring Patterns Composed of Stripe Domains in Nematic Elastomers2022

    • Author(s)
      Ohzono Takuya、Koyama Emiko
    • Journal Title

      Macromolecular Rapid Communications

      Volume: 43 Issue: 23 Pages: 2200599-2200599

    • DOI

      10.1002/marc.202200599

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Unlocking Entropic Elasticity of Nematic Elastomers Through Light and Dynamic Adhesion2021

    • Author(s)
      Ohzono Takuya、Minamikawa Hiroyuki、Koyama Emiko、Norikane Yasuo
    • Journal Title

      Advanced Materials Interfaces

      Volume: 8 Issue: 14 Pages: 2100672-2100672

    • DOI

      10.1002/admi.202100672

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of Crystallites in Nematic Elastomers on Dynamic Mechanical Properties and Adhesion2021

    • Author(s)
      Ohzono Takuya、Minamikawa Hiroyuki、Koyama Emiko、Norikane Yasuo
    • Journal Title

      Macromolecules

      Volume: 54 Issue: 19 Pages: 8987-8995

    • DOI

      10.1021/acs.macromol.1c01160

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Internal constraints and arrested relaxation in main-chain nematic elastomers2021

    • Author(s)
      Ohzono Takuya、Katoh Kaoru、Minamikawa Hiroyuki、Saed Mohand O.、Terentjev Eugene M.
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 787-787

    • DOI

      10.1038/s41467-021-21036-3

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Light-Driven Dynamic Adhesion on Photosensitized Nematic Liquid Crystalline Elastomers2020

    • Author(s)
      Ohzono Takuya、Norikane Yasuo、Saed Mohand O.、Terentjev Eugene M.
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 12 Issue: 28 Pages: 31992-31997

    • DOI

      10.1021/acsami.0c08289

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] ネマチックエラストマーの主鎖から飛び出た側鎖の液晶秩序への影響2022

    • Author(s)
      大園拓哉、小山恵美子
    • Organizer
      第71回高分子学会年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Stabilized Stripe Domains in Nematic Elastomers with Dynamic Pearlescence2022

    • Author(s)
      大園拓哉、南川博之、E.M. Terentjev
    • Organizer
      ILCC2022(国際液晶学会
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Stripe domain with dynamic light diffusion in nematic elastomers2022

    • Author(s)
      Takuya Ohzono
    • Organizer
      OLC2021 SWS2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ネマチックエラストマー中に安定化した配向座屈パターンと動的光拡散性2022

    • Author(s)
      大園拓哉、南川博之、E.M. Terentjev
    • Organizer
      第71回高分子討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ネマチックエラストマーの力学特性への微結晶の影響2021

    • Author(s)
      大園拓哉
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] ネマチックエラストマーの光誘起粘性変化と付着力変化2021

    • Author(s)
      大園拓哉
    • Organizer
      第 6 9 回レオロジー討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] ネマチックエラストマーの光誘起エントロピー弾性2021

    • Author(s)
      大園拓哉
    • Organizer
      2021日本本液晶学会討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Polarized microscopy of polydomain textures of nematic elastomers2021

    • Author(s)
      Takuya Ohzono
    • Organizer
      OLC2021 国際光液晶学会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 部材の凹凸や粘弾性の変化を活用した機能拡張2020

    • Author(s)
      大園拓哉
    • Organizer
      第69 回高分子討論会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 凹凸や粘弾性の可変性による表面機能の拡張2020

    • Author(s)
      大園拓哉
    • Organizer
      第29 回ポリマー材料フォーラム
    • Related Report
      2020 Research-status Report
    • Invited

URL: 

Published: 2020-08-03   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi