Flexoelectric origin of oblique rolls with helical flow in electroconvective nematics under DC excitation

Raghunathan, V. A. ; Madhusudana, N. V. (1988) Flexoelectric origin of oblique rolls with helical flow in electroconvective nematics under DC excitation Pramana - Journal of Physics, 31 (2). L163-L167. ISSN 0304-4289

[img]
Preview
PDF - Publisher Version
251kB

Official URL: http://www.ias.ac.in/j_archive/pramana/31/2/163-16...

Related URL: http://dx.doi.org/10.1007/BF02846971

Abstract

We present a 3-dimensional, linear analysis of electrohydrodynamic (EHD) roll instability in a nematic liquid crystal under DC excitation. It is shown that the flexoelectric effect leads to a new symmetry of the flow pattern, viz. ahelical flow inoblique rolls. Our experimental observations agree with the theoretical predictions.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Nematic Liquid Crystals; Flexoelectricity; Oblique Roll Instability; Electrohydrodynamics
ID Code:20983
Deposited On:20 Nov 2010 09:26
Last Modified:17 May 2016 05:14

Repository Staff Only: item control page