Publication Title

Journal of Applied Physics

Publication Date

1-4-2010

Document Type

Article

DOI

10.1063/1.3273482

Keywords

orientation, films, cells

Disciplines

Physics

Abstract

SiOx alignment layers have been shown to allow defect-free SmC* devices with near optimum bistable orientation of the director. In this paper we investigate the effect of the thickness of this type of alignment layer on the required amplitude of an applied voltage pulse to cause bistable switching. The results of an experimental investigation and simple model are presented. We find that for thicker layers, the amplitude is controlled by the voltage drop across the alignment layers and by the effect of polar interactions between the liquid crystal (LC) and the alignment layers. For thin alignment layers the amplitude is weakly dependent on the details of the alignment layer, being more strongly influenced by the properties of the LC material.

Comments

Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 107, 014103 (2010) and may be found at http://dx.doi.org/10.1063/1.3273482


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