LATHAM, R. and CLEAVER, D. J. (2000). Substrate-induced demixing in a confined liquid crystal film. Chemical Physics Letters, 330 (1-2), 7-14.Full text not available from this repository.
We present results from molecular dynamics simulations of a confined equimolar binary liquid crystal mixture of generalised Gay-Berne particles with axial ratios of 3.0:1 and 3.5:1. Particle-substrate interactions are based on a nonseparable anisotropic 9-3 form augmented by an azimuth-dependent prefactor. At high and moderate temperatures, the longer particles are preferentially adsorbed at the substrates. Unlike the equivalent 3-d bulk system, however, a significant degree of temperature-driven demixing is observed on cooling, the longer particles migrating into the centre of the cell at low temperatures. This leads to a marked decrease in the surface-region order parameter. (C) 2000 Elsevier Science B.V. All rights reserved.
|Research Institute, Centre or Group:||Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Materials and Fluid Flow Modelling Group|
|Depositing User:||Hilary Ridgway|
|Date Deposited:||12 Apr 2010 09:44|
|Last Modified:||29 Sep 2010 10:56|
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