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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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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2014, 14 (2), 4—20.

Orientational and Optical Properties of Liquid Crystalline Layers with Orienting and Non-Orienting Surfaces

V. V. Belyaev1, A. S. Solomatin2

Author affiliations
1Education & Research Lab of Theoretical and Applied Nanotechnology, Moscow Region State University,
Radio str., 10-a, 105005 Moscow, Russia. 
2Department of Computer and Computer Designing, D. Mendeleev University of Chemical Technology of Russia,
Miusskaya sq., 9, 125047 Moscow, Russia. 

LC cell with one side covered by orienting coating providing a predetermined pretilt angle of director is examined. The other side of the cell has no significant orienting effect. Non-orienting surface of the cell is called «free» and the LC cell with one orienting side is called «one-side oriented» or «one-sided». When there is an orienting field applied to the cell, the LC director will be distributed from a given contact angle and to the planar or homeotropic ones (depending on the sign of the dielectric anisotropy). A method for calculating the distribution of the LC director to the one-side oriented cell depending on the thickness of the cell and the pretilt angle of the director on the side of the cell, which is covered with the orientant, is proposed. Theoretical and computer model of LC director distribution is performed. Theoretical and computer model of dependence of the difference of the phase retardation ΔΦ is carried out.

Keywords: liquid crystal cell, director, contact angle, hybrid cell

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