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Protocol development for the real-space observation of topological defects in liquid crystals

Research Project

Project/Area Number 16K13862
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Biological physics/Chemical physics/Soft matter physics
Research InstitutionOsaka University

Principal Investigator

Yoshida Hiroyuki  大阪大学, 工学研究科, 助教 (80550045)

Co-Investigator(Renkei-kenkyūsha) NISHI Ryuji  大阪大学, 超高圧電子顕微鏡センター, 准教授 (40243183)
KUWAHARA Ryusuke  沖縄科学技術大学院大学, 量子波光学顕微鏡ユニット, スタッフサイエンティスト (90589649)
Research Collaborator OHKAWA Takuma  大阪大学, 大学院工学研究科
TAKAHASHI Misaki  大阪大学, 大学院工学研究科
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords液晶 / ソフトマター物理 / 転傾 / 配向欠陥 / トポロジカル欠陥 / 透過型電子顕微鏡 / コレステリックブルー相
Outline of Final Research Achievements

A protocol to observe defects in the alignment of liquid crystals in real space and with high resolution was proposed. Two types of photopolymerizable monomers were employed to prepare a film with the liquid crystal alignment preserved, and observations were made using a transmission electron microscope (TEM). Although the employed materials did not give rise to a satisfactory contrast in the TEM, the proposed protocol enabled the fabrication of films with well-preserved liquid crystal alignment. Improvement of materials should therefore enable real-space observation of liquid crystal defects with a resolution well beyond that possible with the current optical observation methods.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (9 results)

All 2018 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Orientation of liquid crystalline blue phases on unidirectionally orienting surfaces2018

    • Author(s)
      Takahashi Misaki、Ohkawa Takuma、Yoshida Hiroyuki、Fukuda Jun-ichi、Kikuchi Hirotsugu、Ozaki Masanori
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 51 Issue: 10 Pages: 104003-104003

    • DOI

      10.1088/1361-6463/aaaa4b

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bragg reflection band width and optical rotatory dispersion of cubic blue phase liquid crystals2016

    • Author(s)
      H. Yoshida, K. Anucha, Y. Ogawa, Y. Kawata, M. Ozaki, J. Fukuda, H. Kikuchi
    • Journal Title

      Physical Review E

      Volume: 94 Issue: 4 Pages: 042703-042703

    • DOI

      10.1103/physreve.94.042703

    • NAID

      120006840986

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 一様配向およびねじれ配向セルにおけるブルー相液晶の格子配向に関する研究2017

    • Author(s)
      高橋実咲、大川拓真、吉田浩之、尾崎雅則
    • Organizer
      第7回ソフトマター研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 欠陥線を有する高分子/ネマティック液晶複合系の重合形成過程の観察2017

    • Author(s)
      大川拓真、吉田浩之、尾﨑雅則
    • Organizer
      第7回ソフトマター研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ねじれ配向セルにおけるブルー相液晶の格子配向に関する研究2017

    • Author(s)
      高橋実咲、大川拓真、吉田 浩之、尾﨑雅則
    • Organizer
      2017年日本液晶学会討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] (110)面に配向制御したブルー相液晶の透過電子顕微鏡観察2016

    • Author(s)
      大川拓真、田中秀、河田優人、桒原隆亮、西竜治、吉田浩之、尾﨑雅則
    • Organizer
      2016年日本液晶学会討論会
    • Place of Presentation
      大阪工業大学大宮キャンパス(大阪府大阪市)
    • Year and Date
      2016-09-05
    • Related Report
      2016 Research-status Report
  • [Presentation] 一軸配向性基板上におけるブルー相液晶の結晶方位角の評価2016

    • Author(s)
      高橋実咲、大川拓真、河田優人、吉田 浩之、尾﨑雅則
    • Organizer
      2016年日本液晶学会討論会
    • Place of Presentation
      大阪工業大学大宮キャンパス(大阪府大阪市)
    • Year and Date
      2016-09-05
    • Related Report
      2016 Research-status Report
  • [Presentation] Transmission Electron Microscopy of Photopolymerized Blue Phase Liquid Crystals2016

    • Author(s)
      Hiroyuki Yoshida, Shu Tanaka, Takuma Ohkawa, Yuto Kawata, Ryusuke Kuwahara, Ryuji Nishi, and Masanori Ozaki
    • Organizer
      26th International Liquid Crystal Conference (ILCC 2016)
    • Place of Presentation
      Kent State University, Kent, U.S.A.
    • Year and Date
      2016-07-31
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Lattice Structure Observation of Cholesteric Blue Phases by Transmission Electron Microscopy2016

    • Author(s)
      Takuma Ohkawa, Shu Tanaka, Yuto Kawata, Ryusuke Kuwahara, Ryuji Nishi, Hiroyuki Yoshida, and Masanori Ozaki
    • Organizer
      8th Japanese-Italian Liquid Crystal Workshop
    • Place of Presentation
      Kyoto International Community House (kokoka), Kyoto, Japan
    • Year and Date
      2016-07-05
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2019-03-29  

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