Trabi, C.L. and Brown, C.V. and Smith, A.A.T. and Mottram, N.J. (2008) *Interferometric method for determining the sum of the flexoelectric coefficients (e1+e3) in an ionic nematic material.* Applied Physics Letters, 92 (22). p. 223509. ISSN 0003-6951

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## Abstract

The time-dependent periodic distortion profile in a nematic liquid crystal phase grating has been measured from the displacement of tilt fringes in a Mach-Zehnder interferometer. A 0.2 Hz squarewave voltage was applied to alternate stripe electrodes in an interdigitated electrode geometry. The time-dependent distortion profile is asymmetric with respect to the polarity of the applied voltage and decays with time during each half period due to ionic shielding. This asymmetry in the response allows the determination of the sum of the flexoelectric coefficients (e1+e3) using nematic continuum theory since the device geometry does not possess inherent asymmetry.

Item type: | Article |
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ID code: | 13804 |

Keywords: | interferometric method, flexoelectric coefficients, (e(1)+e(3)), ionic nematic material, Probabilities. Mathematical statistics, Physics |

Subjects: | Science > Mathematics > Probabilities. Mathematical statistics Science > Physics |

Department: | Faculty of Science > Mathematics and Statistics Faculty of Science > Mathematics and Statistics > Mathematics |

Related URLs: | |

Depositing user: | Mrs Mary McAuley |

Date Deposited: | 13 Jan 2010 10:47 |

Last modified: | 20 Jul 2013 14:29 |

URI: | http://strathprints.strath.ac.uk/id/eprint/13804 |

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