Study of Memory Alignment of Nematic Liquid Crystals on Polyvinyl Alcohol Coatings

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Copyright (c) 1993 The Japan Society of Applied Physics
, , Citation Peter Vetter et al 1993 Jpn. J. Appl. Phys. 32 L1239 DOI 10.1143/JJAP.32.L1239

1347-4065/32/9A/L1239

Abstract

Polymer layers can cause memory alignment of nematic liquid crystals. We describe an experimental method to characterize this effect. We studied the temperature dependence of the memory alignment on polyvinyl alcohol coatings. We also investigated the influence of the time span during which the memory alignment is generated. We propose an adsorption-desorption mechanism by which we can explain our observations in a reasonable way.

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10.1143/JJAP.32.L1239