Phase behavior of disklike hard-core mesogens
- 1 April 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 45 (8) , 5632-5648
- https://doi.org/10.1103/physreva.45.5632
Abstract
We report a computer-simulation study of a system of ‘‘hard cut spheres,’’ oblate particles that are obtained by slicing off the top and bottom caps of a sphere at a distance L/2 from the equatorial plane. This system serves as a model for a disklike mesogen. The phase behavior of this system is found to be strongly dependent on the length-to-width ratio (L/D) of the particles. In addition to isotropic and solid phases, we find nematic and columnar phases for L/D=0.1. For L/D=0.2 we find a columnar phase, and a phase with cubic orientational order but no translational order. For L/D=0.3, only the isotropic fluid and the solid are stable. Where possible, we have located the phase transitions.Keywords
This publication has 17 references indexed in Scilit:
- Diffusion coefficient increases with density in hard ellipsoid liquid crystalsPhysical Review Letters, 1990
- Monte Carlo calculation of orientationally anisotropic pair distributions and energy transfer in a model monolayerThe Journal of Physical Chemistry, 1990
- Orientational ordering in a monolayer of hard oblate spheroidsLangmuir, 1989
- Molecular dynamics simulation using hard particlesComputer Physics Reports, 1989
- Structure of Liquid Crystal PhasesWorld Scientific Lecture Notes in Physics, 1988
- Monte Carlo simulation on a system of hard cylinders at a very high packing fractionPhysical Review A, 1988
- Evidence for one-, two-, and three-dimensional order in a system of hard parallel spherocylindersPhysical Review A, 1987
- The hard ellipsoid-of-revolution fluidMolecular Physics, 1985
- Thermodynamics and structure of hard oblate spherocylinder fluidsMolecular Physics, 1984
- Monte Carlo study of the isotropic and nematic phases of infinitely thin hard plateletsMolecular Physics, 1984