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Liquid Crystals and their Application
Russian Journal Zhidkie kristally i ikh prakticheskoe ispol'zovanie Жидкие кристаллы и их практическое использование |
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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2008, 2, 35—45. |
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Electro-Optical Properties of Polymer Dispersed Liquid Crystal Films Submicron-Size Droplets
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I. A. Kazantseva, S. A. Bulgakova, A. I. Mashin, M. M. Dzhons, G. S. Tchepkov, A. V. Korobkov, A. V. Nezhdanov
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Author affiliations
N. I. Lobachevsky State University of Nizhni Novgorod
603950 Nizhni Novgorod, Russia, Prospekt Gagarina, 23.
E-mail: kazantseva@phys.unn.ru
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Abstract
The polymer-dispersed liquid crystal films with submicron sizes of liquid crystal droplets have been prepared by method of acrylic monomers photopolymerization. The influence of liquid crystal concentration, a copolymer composition and additions of the cross-linker and the chain transfer agent on droplet sizes, transparent and voltage-contrast characteristics of polymer dispersed liquid crystal films have been investigated. It is shown that in the modified structures the increase in contrast till 0,98 and decrease in threshold fields up to 1,2 V/μm is reached.
Keywords: liquid crystal, photopolymerization, acrylic monomers, polymer-dispersed liquid crystal films, electro-optical properties
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