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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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Rus Eng

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Journal



Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2012, 4, 47—52.





Memory Effect in Cholesteric Droplets Doped with Ionic Surfactant



A. P. Gardymova1, A. V. Burmitskikh1, V. Ya. Zyryanov2

Author affiliations
1Siberian Federal University. Institute of Engineering Physics
660041, Krasnoyarsk, Svobodny Prospect, 79. Russia. 
E-mail: gard@iph.krasn.ru
2Kirensky Institute of Physics SB RAS
660036, Krasnoyarsk, Akademgorodok, 50. Russia. 
E-mail: zyr@iph.krasn.ru

Abstract
A memory effect in liquid crystalline composite material is considered. The studied material represents a polymer film with cholesteric liquid crystal droplets dispersed in it. The cholesteric material was doped with an ionic surfactant. Optical memory effect is caused by a switching of cholesteric droplets between various stable orientation states. A stability of the states is provided due to a change of the boundary conditions by the surfactant ions under the action of electric field.

Keywords: cholesteric liquid crystal, polymer, ionic surfactant, interface, droplet, director configuration, electrooptics





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