Simulation of a cholesteric blue phase in a thin cell: Exotic defect structures and their response to an electric field

Jun Ichi Fukuda, Slobodan Žumer

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

4 被引用数 (Scopus)

抄録

We present our numerical attempts to simulate the structures of a cholesteric blue phase (BP) confined in a thin cell. Our simulations are based on a Landau-de Gennes theory describing the orientational order of the liquid crystal by a second-rank symmetric tensor. When the cell thickness is small enough, of the order of the lattice constant of the bulk BP a, various exotic defect structures that do not resemble those of bulk BPs are shown to be stable. They include a hexagonal lattice of Skyrmion excitations, and arrays of disclination lines in a double-helix form. We also show the dynamics of disclination lines in a thicker cell (∼ 2.6 a) under an applied electric field. The cell before the application of an electric field accommodates disclination lines of the form similar to that of bulk BP. The electric field alters their form in a non-trivial way depending on the field strength.

本文言語英語
ホスト出版物のタイトルEmerging Liquid Crystal Technologies VII
DOI
出版ステータス出版済み - 2012
外部発表はい
イベントEmerging Liquid Crystal Technologies VII - San Francisco, CA, 米国
継続期間: 1 22 20121 25 2012

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
8279
ISSN(印刷版)0277-786X

その他

その他Emerging Liquid Crystal Technologies VII
国/地域米国
CitySan Francisco, CA
Period1/22/121/25/12

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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