Substrate-induced demixing in a confined liquid crystal film

LATHAM, R. and CLEAVER, D. J. (2000). Substrate-induced demixing in a confined liquid crystal film. Chemical Physics Letters, 330 (1-2), 7-14.

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    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.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Modelling Research Centre > Materials Modelling group
    Identification Number:
    Page Range: 7-14
    Depositing User: Hilary Ridgway
    Date Deposited: 12 Apr 2010 08:44
    Last Modified: 18 Mar 2021 09:30

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