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Title: Propagating electroconvection in nematic liquid crystals under DC excitation
Authors: Raghunathan, V.A.
Maheswara Murthy, P.R.
Madhusudana, N.V.
Issue Date: 25-May-1990
Publisher: Indian Academy of Sciences, Bangalore, India.
Citation: Current Science, 1990, Vol. 59, p506-508.
Abstract: On the basis of a simple one-dimensional linear model we show for the first time that a propagating electrohydrodynamic instability (PI) of a nematic liquid crystal occurs at the threshold of DC excitation if the symmetry of a homogeneously aligned cell is changed by introducing a small (- 0.01 rad) pre-tilt of the director. Flexoelectric torques, which are d2 out of phase with those produced by other couplings, provide the driving mechanism for the PI mode, whose direction depends on that of the applied field. We also report an experimental observation of this mode.
ISSN: 0011-3891
Copyright: Indian Academy of Sciences, Bangalore, India.
Appears in Collections:Research Papers (SCM)

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