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Interferometric method for the measurement of the flexoelectric polarisation using nematic liquid crystal phase gratings

Trabi, C.L. and Smith, A.A.T. and Brown, C.V. (2009) Interferometric method for the measurement of the flexoelectric polarisation using nematic liquid crystal phase gratings. Molecular Crystals and Liquid Crystals, 509. pp. 1120-1134. ISSN 1542-1406

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Abstract

An interferometric method using a nematic liquid crystal phase grating has recently been developed for determining the sum of the flexoelectric coefficients, (e1 + e3) [C. Trabi, C. V. Brown, A. A. T. Smith and N. J. Mottram, Appl. Phys. Lett. 92, 223509 (2008)]. The switching response of the device can be simulated if the applied 0.2 Hz squarewave voltage in the nematic layer is modified so that it is enhanced by a reverse ion-field after each polarity reversal and then decays with time. This process has been investigated using measurements of the transient capacitance of a planar nematic layer to the same waveform.

Item type: Article
ID code: 16906
Keywords: dielectrics, diffraction optical element, nematic liquid crystals, transient capacitance, Physics, Materials Science(all), Chemistry(all), Condensed Matter Physics
Subjects: Science > Physics
Department: Faculty of Science > Mathematics and Statistics > Mathematics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 25 Mar 2010 15:18
    Last modified: 05 Sep 2014 03:56
    URI: http://strathprints.strath.ac.uk/id/eprint/16906

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