Enhanced stabilization of photo-induced Helfrich deformation by doping bent-dimers in cholesteric liquid crystals

Zhi Qun Wang, Hung Lin Chen, Yan-song Zhang, Chia Rong Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, the bent dimers were added in the azobenzene chiral doped cholesteric liquid crystals. The photoisomerization of azo-chiral material can induce a change in pitch and eventually lead to the occurrence of Helfrich deformation. Experimental results show that the photoinduced microgrid structure can be significantly stabilized by adding bent dimers and simultaneously applying a low voltage below the threshold of electric-induced Helfrich deformation. Furthermore, the spacing of the resulting meshed microgrids can be tuned by dimer concentration or applied voltage, revealing its potential for multiparameter controllable optical diffraction devices.

Original languageEnglish
Title of host publicationEmerging Liquid Crystal Technologies XVIII
EditorsLiang-Chy Chien, Igor Musevic, Nelson V. Tabiryan
PublisherSPIE
ISBN (Electronic)9781510659896
DOIs
Publication statusPublished - 2023
EventEmerging Liquid Crystal Technologies XVIII 2023 - San Francisco, United States
Duration: 2023 Feb 12023 Feb 2

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12442
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceEmerging Liquid Crystal Technologies XVIII 2023
Country/TerritoryUnited States
CitySan Francisco
Period23-02-0123-02-02

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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