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Thickness dependence of the anchoring energy of a nematic cell

Journal article
Authors Rasha Mohamed Ata Alla
Giovanni Barbero
Lachezar Komitov
Published in Journal of Applied Physics
Volume 113
Issue 16
ISSN 0021-8979
Publication year 2013
Published at Department of Physics (GU)
Language en
Links dx.doi.org/10.1063/1.4802677
Keywords liquid-crystal, transition, adsorption
Subject categories Physical Sciences

Abstract

The cell gap thickness dependence of the anchoring energy strength of a nematic cell is investigated. The relaxation time of the elastic deformation of a nematic liquid crystal layer imposed by an external electric field is analyzed as a function of the thickness of the nematic layer. The measurements have been performed with conventional sandwich cells with cell gap ranging from 1 μm to 10 μm. According to our data, the anchoring energy strength is not only a characteristic of the interface substrate-nematic liquid crystal but it also depends strongly on the cell thickness.

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