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

## 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 |
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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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