Surface evanescent field characterisation of antiferroelectric liquid crystals

Beccherelli, Romeo and Judge, Lesley A. and Nigel , J. Mottram and Elston, Steve J. (2001) Surface evanescent field characterisation of antiferroelectric liquid crystals. Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid , 358. pp. 263-274. ISSN 1058-725X

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In this paper we report a study of the dynamics of antiferroelectric liquid crystals by using simultaneous total internal reflection and transmission. In devices having both substrates coated with a polyimide, but only one rubbed, we found that the optic axis of the liquid crystal region close to the unrubbed substrate deviates from the rubbing direction less than the bulk. In switching experiments we find that this region is also slower then the bulk and it is virtually free from the undesired pretransitional effect. We also found an asymmetry in the switching of the surface region and we use a simple model to account for it.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 500.2 Scienze fisiche
Depositing User: Danilo Dezzi
Date Deposited: 02 Jan 2013 11:24
Last Modified: 20 Mar 2013 14:44

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