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A preliminary investigation of the anomalous out-of plane tilt alignment in an orthogonal-twist ferroelectric liquid-crystal cell using the prism-coupling technique

Lavers, C.R., Sambles, J.R., Raynes, E.P. and Cann, P.S. (1993) A preliminary investigation of the anomalous out-of plane tilt alignment in an orthogonal-twist ferroelectric liquid-crystal cell using the prism-coupling technique Liquid Crystals, 15, (5), pp. 749-755. (doi:10.1080/02678299308036495).

Record type: Article

Abstract

Recent prism-coupling results are presented which clearly demonstrate that in ferroelectric liquid crystal cells, prepared with the alignment directions of the two surfaces orthogonal, with sputtered indium tin oxide conductive layers and spun polyimide alignment layers, there is no out-of-plane tilt of the liquid crystal optic axis. Unlike most techniques which give an integrated optical response throughout a cell, the prism-coupling technique allows a separate analysis of in-plane and out-of-plane tilt. Conventional optical polarized microscopy yields good lateral resolution but poor section resolution. For a uniform sample we can obtain information on the section (across the cell) resolution. We report that an optical dielectric tensor configuration is formed in which the major optic axis lies in the plane of the surface across the cell, but that as expected, in an orthogonal-twist cell, there is no axis of preferred alignment within this surface plane.

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Published date: November 1993

Identifiers

Local EPrints ID: 78095
URI: http://eprints.soton.ac.uk/id/eprint/78095
ISSN: 1358-314X
PURE UUID: 0ea555c4-725b-42ae-a954-aedcf7ff9ad7

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:27

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Contributors

Author: C.R. Lavers
Author: J.R. Sambles
Author: E.P. Raynes
Author: P.S. Cann

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