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Dielectric shape dispersion and biaxial transitions in nematic liquid crystals

Sonnet, A.M. and Virga, E.G. and Durand, G.E. (2003) Dielectric shape dispersion and biaxial transitions in nematic liquid crystals. Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 67 (6). ISSN 1063-651X

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Abstract

Using two order tensors, we propose a mean-field model to describe the uniaxial and biaxial phases of nematogenic molecules presenting a shape dispersion of their biaxial dielectric susceptibility. We recover the classical isotropic-uniaxial-biaxial sequence of phases. The phase diagram exhibits a tricritical point, a feature that cannot be retraced in the other mean-field models established for molecules without shape dispersion.

Item type: Article
ID code: 4562
Keywords: nematic liquid crystals, shape dispersion, uniaxial phases, biaxial phases, mathematics, Chemistry, Mathematics, Physics and Astronomy(all), Mathematical Physics, Statistical and Nonlinear Physics, Condensed Matter Physics
Subjects: Science > Chemistry
Science > Mathematics
Department: Faculty of Science > Mathematics and Statistics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 02 Nov 2007
    Last modified: 04 Sep 2014 15:41
    URI: http://strathprints.strath.ac.uk/id/eprint/4562

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