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Theoretical model of the transition between C1 and C2 chevron structures in smectic liquid crystals

Diaz, A. and Mottram, N.J. and McKay, G. (2005) Theoretical model of the transition between C1 and C2 chevron structures in smectic liquid crystals. European Physical Journal E - Soft Matter, 18 (2). pp. 231-237. ISSN 1292-8941

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Abstract

We present a study of the effect of weak anchoring on the transition between C1 and C2 chevron structures in smectic-C liquid crystals. The coexistence of C1 and C2 chevron structures within a single cell causes zigzag defects to occur and may affect the optical characteristics of the cell. By standard Euler-Lagrange minimisation of the total energy of the system, we obtain analytical expressions for the equilibrium director cone angle in the two chevron states. These in turn allow us to compare the total energies of the states and determine the globally stable chevron profile. We show that analytical predictions for the critical transition temperature, which depends on anchoring strength and pretilt angle, are in good agreement with those obtained numerically.

Item type: Article
ID code: 2228
Keywords: C1, C2 chevron structures, smectic-C liquid crystals, smectics, physics, Physics, Materials Science(all), Chemistry(all), Surfaces and Interfaces, Biotechnology, Biophysics
Subjects: Science > Physics
Department: Faculty of Science > Mathematics and Statistics
Faculty of Science > Mathematics and Statistics > Mathematics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 28 Sep 2007
    Last modified: 04 Sep 2014 13:32
    URI: http://strathprints.strath.ac.uk/id/eprint/2228

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