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Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases
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 achi...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164681/ https://www.ncbi.nlm.nih.gov/pubmed/30208651 http://dx.doi.org/10.3390/ijms19092715 |
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author | Nozawa, Takuma Brumby, Paul E. Yasuoka, Kenji |
author_facet | Nozawa, Takuma Brumby, Paul E. Yasuoka, Kenji |
author_sort | Nozawa, Takuma |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-6164681 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-61646812018-10-10 Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases Nozawa, Takuma Brumby, Paul E. Yasuoka, Kenji Int J Mol Sci Article 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. MDPI 2018-09-11 /pmc/articles/PMC6164681/ /pubmed/30208651 http://dx.doi.org/10.3390/ijms19092715 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nozawa, Takuma Brumby, Paul E. Yasuoka, Kenji Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases |
title | Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases |
title_full | Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases |
title_fullStr | Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases |
title_full_unstemmed | Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases |
title_short | Effect of Central Longitudinal Dipole Interactions on Chiral Liquid-Crystal Phases |
title_sort | effect of central longitudinal dipole interactions on chiral liquid-crystal phases |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164681/ https://www.ncbi.nlm.nih.gov/pubmed/30208651 http://dx.doi.org/10.3390/ijms19092715 |
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