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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
E-mail: s-p-a-s-m@mail.ru
²Hong Kong University of Science and Technology,
Clear Water Bay, Kowloon, Hong Kong
E-mail: eechigr@ust.hk

Abstract
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