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Influence of flexoelectricity above the nematic Freedericksz transition

Brown, C.V. and Mottram, N. (2003) Influence of flexoelectricity above the nematic Freedericksz transition. Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 68. ISSN 1063-651X

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Abstract

Continuum theory is used to demonstrate that the presence of flexoelectricity significantly alters the response to an applied voltage of a homogeneous nematic liquid crystal cell above the ac Fræ#169;edericksz threshold voltage. In such a system there is a fitting degeneracy: we obtain very good fits between theory and experimental permittivity data using any value of the sum of flexoelectric coefficients, e11 + e33, between 0.0 C/m and 1.5×10-11 C/m. The corresponding values of the nematic bend elastic constant show an inverse parabolic relationship with e11 + e33, with K33 being reduced down to 90% of its value when flexoelectricity is neglected.

Item type: Article
ID code: 2120
Keywords: continuum theory, flexoelectricity, nematic, Fréedericksz transition, mathematics, physics, Mathematics, Physics, Physics and Astronomy(all), Mathematical Physics, Statistical and Nonlinear Physics, Condensed Matter Physics
Subjects: Science > Mathematics
Science > Physics
Department: Faculty of Science > Mathematics and Statistics
Related URLs:
    Depositing user: Dr Nigel Mottram
    Date Deposited: 17 Nov 2006
    Last modified: 04 Sep 2014 11:30
    URI: http://strathprints.strath.ac.uk/id/eprint/2120

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