Cylindrical defect structures formed by chiral nematic liquid crystals in quasi-one-dimensional systems

Hiroaki Tsujinoue, Takuma Nozawa, Noriyoshi Arai

Research output: Contribution to journalArticlepeer-review

Abstract

Blue phases are three-dimensional self-assembly structures of liquid crystals with a lattice of line defects. They have attracted considerable interest as photonic materials. It is well known that blue phases occur in cholesteric liquid crystals (CLCs) under certain thermodynamic conditions; however, recent studies have indicated that confining surfaces may induce distinctive structural changes. For example, in a previous study, a quasi-two-dimensional (Q2D) confinement system was investigated with the aid of numerical calculations, and a stable Q2D Skyrmion structure was attained. Here, we performed molecular simulations to investigate the CLC phase behavior at the molecular scale for a quasi-one-dimensional (Q1D) nanotube system. Various morphological behaviors of CLCs were observed by changing the temperature and the radius of the nanotubes. In particular, we discovered a self-assembled structure with cylindrical (or ring-like) defects rather than lines by introducing a novel local orientation analysis. Our simulation results show that the self-assembly of CLCs offers a guide to control the intensity in Q1D systems and fundamental knowledge for their application to optical devices. This journal is

Original languageEnglish
Pages (from-to)16896-16904
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume22
Issue number29
DOIs
Publication statusPublished - 2020 Aug 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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