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.
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Raghunathan, V.A., Madhusudana, N.V. Flexoelectric origin of oblique rolls with helical flow in electroconvective nematics under DC excitation. Pramana - J. Phys 31, L163–L167 (1988). https://doi.org/10.1007/BF02846971
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DOI: https://doi.org/10.1007/BF02846971