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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., 2018, 18 (1), 79—83.
DOI: 10.18083/LCAppl.2018.1.79

Electrically Induced Shear Flows of Liquid Crystals Confined to Porous Polymer Films for THz Application

S. V. Pasechnik1, D. V. Shmeliova1, A. V. Dubtsov1, S. V. Trifonov1, V. G. Chigrinov2

Author affiliations
1Problem Laboratory of Molecular Acoustics, Moscow Technological University,
20 Stromynka St., Moscow, 107996, Russia
2Hong Kong University of Science and Technology,
Clear Water Bay, Kowloon, Hong Kong

In this paper we consider new possibilities to control the THz irradiation via usage of the previously studied [1] electro-kinetic phenomena in the porous polymer (PET) film filled with a nematic liquid crystal (NLC). It is shown that a sample of the porous film may play the role of electro-hydrodynamic (EHD) pump, which induces a shear Poiseuille flow of NLC through the sandwich-like cell connected with the pump. The shear flow results in changing of the initial orientation of LC, which can be used to control the THz irradiation passing through the sandwich-like cell.

Keywords: liquid crystals, electro-hydrodynamic (EHD) pump, electro-kinetic phenomena

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