Computer simulation of chiral liquid crystal phases. I. The polymorphism of the chiral Gay-Berne fluid
作者:
R. Memmer,
H.-G. Kuball,
A. Schönhofer,
期刊:
Liquid Crystals
(Taylor Available online 1993)
卷期:
Volume 15,
issue 3
页码: 345-360
ISSN:0267-8292
年代: 1993
DOI:10.1080/02678299308029136
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
We report the results of computer simulation studies for a bulk system composed of chiral particles interacting via the Gay-Berne potential and an additive chiral potential. Using Monte Carlo (MC) simulations in theNVTensemble, the chirality-temperature plane of the phase diagram was studied at different points by a variation of the chirality parametercdescribing the strength of the chiral potential. Additionally to the well-known isotropic, nematic and smectic phases of the Gay-Berne fluid, we localized regions of cholesteric phase. For large values of the chirality parameter we also observed blue phases. Furthermore, when starting from a cholesteric phase and decreasing the temperature at constantc, we obtained a phase region showing characteristics of the recently discovered helical smectic A* phase. All phases have been characterized by correlation functions, order parameters, and visual representations of selected configurations. All results of the simulation are limited by the small system size ofN= 256 molecules and the use of periodic boundary conditions.
点击下载:
PDF (934KB)
返 回