On the threshold characteristics of the flexoelectric domains arising in a homogeneous electric field: The case of anisotropic elasticity
Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., BG-1784, Sofia, Bulgaria
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Revised: 29 September 2009
Published online: 2 March 2010
Precise solutions for the threshold voltage Uc and wave number qc that feature the appearance of longitudinal flexoelectric domains of Vistin’-Pikin-Bobylev at strong anchoring have been derived. Based on the formulated expressions, we present and analyze computer calculations for a planar nematic layer with anisotropic elasticity and both negative and positive dielectric anisotropy under the action of a homogeneous flexoelectrically deforming d.c. electric field. The obtained relations allow a selection of particular values of physical parameters, in order to improve the performance of devices exploiting flexoelectrcity in nematics.
© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2010