Effect of central longitudinal dipole interactions on chiral liquid-crystal phases

Takuma Nozawa, Paul E. Brumby, Kenji Yasuoka

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Monte Carlo simulations of chiral liquid-crystals, represented by a simple coarse-grained chiral Gay–Berne model, were performed to investigate the effect of central longitudinal dipole interactions on phase behavior. A systematic analysis of the structural properties and phase behavior of both achiral and chiral systems, with dipole interactions, reveals differing effects; strong dipole interactions enhance the formation of layered structures; however, chiral interactions may prevent the formation of such phases under certain conditions. We also observed a short-ranged smectic structure within the cholesteric phases with strong dipole interactions. This constitutes possible evidence of presmectic ordering and/or the existence of chiral line liquid phases, which have previously been observed in X-ray experiments to occur between the smectic twisted grain boundary and cholesteric phases. These results provide a systematic understanding of how the phase behavior of chiral liquid-crystals changes when alterations are made to the strength of dipole interactions.

Original languageEnglish
Article number2715
JournalInternational journal of molecular sciences
Volume19
Issue number9
DOIs
Publication statusPublished - 2018 Sep 11

Keywords

  • Chirality
  • Dipole
  • Liquid crystals
  • Molecular simulation
  • Phase transition

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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