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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., 2013, 2, 26—36. |
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Orientational Transitions in Electric or Magnetic Field in Two-Layer Nematic Structures Induced by Polymer Surface
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A. M. Parshin, V. A. Gunyakov, V. Ya. Zyryanov, V. F. Shabanov
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Author affiliations
Kirensky Institute of Physics of SB RAS
Akademgorodok 50, Krasnoyarsk, 660036. Russia.
E-mail: parshin@iph.krasn.ru
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Abstract
Two-layer structures of a nematic liquid crystal were experimentally studied in cells with interfacial polycarbonate surfaces under orientational transitions from planar- and homeotropic-domain configurations to the homogeneous homeotropic state. Director reorientation was initiated by electric or magnetic fields. The effective order parameter was used to describe the liquid crystal alignment in two-layer structure. Comparison with a model based on the elasticity theory of liquid crystals was carried out.
Keywords: nematic, polycarbonate, two-layer structure, electric field, magnetic field, domain
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