Paper Title:

A Novel Method for Measuring the Difference in Flexoelectric Coefficients of Nematic Liquid Crystals

Periodical Solid State Phenomena (Volumes 181 - 182)
Main Theme Liquid Crystals and Related Materials II
Edited by Yuan Ming Huang
Pages 26-32
DOI 10.4028/www.scientific.net/SSP.181-182.26
Citation Benjamin I. Outram et al., 2011, Solid State Phenomena, 181-182, 26
Online since November, 2011
Authors Benjamin I. Outram, Steve J. Elston
Keywords Chiral-Flexoelectrooptic, Crystal Rotation, Flexoelectricity, Twisted Nematic
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Abstract

The difference between e1 and e3 parameters for flexoelectric polarization, as originally defined byMeyer, is measured for nematic liquid crystal materials E7 and BL087 in Twisted Nematic (TN) cells with In-Plane Switching (IPS) electric fields using the crystal rotation method, which measures transmission as a function of angle of incidence. Values of e1 − e3 for E7 and BL087 are found to be 7.2±1.0 pCm−1 and 9.4±1.0 pCm−1 respectively.