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Title: Effect of surface electric field on the anchoring of nematic liquid crystals
Authors: Barbero, G.
Evangelista, L.R.
Madhusudana, N.V.
Issue Date: 1998
Publisher: EDP Sciences, Springer-Verlag
Citation: European Physical Journal B, 1998, Vol.1, p327-331
Abstract: We analyse the influence of adsorbed ions and the resulting surface electric field and its gradient on the anchoring properties of nematics with ionic conductivity. We take into account two physical mechanisms for the coupling of the nematic director with the surface electric field: (i) the dielectric anisotropy and (ii) the coupling of the quadrupolar component of the flexoelectric coefficient with the field gradient. It is shown that for sufficiently large fields near saturated coverage of the adsorbed ions, there can be a spontaneous curvature distortion in the cell even when the anchoring energy is infinitely strong. We also discuss the director distortion when the anchoring energy of the surface is finite.
Description: Restricted Access.
ISSN: 1434-6028
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Copyright: 1998 EDP Sciences, Springer-Verlag
Appears in Collections:Research Papers (SCM)

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