Asymmetric director structures and flexoelectricity in nematic pi-cell devices

作者：Tartan Chloe C^*; Elston Steve J

来源：Applied Physics Letters, 2015, 107(8): 081902.

DOI：10.1063/1.4929385

The sum of the flexoelectric coefficients in a liquid crystal material has been measured in nematic pi-cell devices, based on a method that exploits the asymmetry in the director configurations of the different states in a pi-cell, the uniform surface alignment polarities, and the influence of ions. A value of vertical bar e(1) + e(3)vertical bar = 10 pC m(-1) was measured from data-theory comparisons in the standard commercial eutectic E7 nematic liquid crystal mixture.

• 出版日期2015-8-24