Malik, A. and Coondoo, Indrani and Choudhary, Amit and Biradar, A. M. (2010) Field-induced transition from homeotropic to planar geometry in the SmC* phase of an electroclinic liquid crystal. Philosophical Magazine, 90 (20). pp. 2733-2747. ISSN 1478-6443

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Abstract

The optical and electrical behavior was investigated of a symmetric liquid crystal (LC) cell: ITO–silane–LC–silane–ITO. The silane layer induces a perfect homeotropic alignment of the molecules of the studied electroclinic liquid crystal (ELC) material, BDH 764E. A field-induced transition from the perfect homeotropic to planar orientation in the chiral smectic C (SmC*) and smectic A (SmA) phases of the ELC was observed. Optical and dielectric studies were performed for both alignment (geometry) modes. The field-induced transition from the homeotropic to planar orientation was studied vis-a` -vis the high negative dielectric anisotropy obtained in the studied material. Such an ELC with large negative dielectric anisotropy and perfect homeotropic alignment may have important implications for modern LC display technology.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Taylor & Francis.
Uncontrolled Keywords:	liquid crystal; homeotropic phase; silane layer; dielectric anisotropy
Subjects:	Materials Science Mechanics Metallurgy & Metallurgical Engineering Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	19 Apr 2012 07:25
Last Modified:	19 Apr 2012 07:25
URI:	http://npl.csircentral.net/id/eprint/162

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