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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2018, 18 (3), 89—93. DOI: 10.18083/LCAppl.2018.3.89
Electrorheology of Liquid Crystals
S. V. Pasechnik1, D. V. Shmeliova1, S. S. Kharlamov1, O. A. Semina1, A. Sh. Saidgaziev1, V. G. Chigrinov2
Author affiliations 1Problem Laboratory of Molecular Acoustics, Russian Technological University,
20 Sromynka St., Moscow, 107996, Russia E-mail: email@example.com 2Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
Abstract The results of experimental investigation of rheological properties of a nematic liquid crystal (NLC) 5CB (4-cyano-4'-pentylbiphenyl) confined to submicron pores of polymer PET-films in the presence of AC electric field are presented. The decay flow method, elaborated previously for plane channels, was successfully adopted and applied to the LC-PET composite media, which can be considered as a number of cylindrical channels, connected in parallel schema, filled with flowing LC. It provides the calculation of the effective shear viscosity as a function of the electric field strength. The character of this function indicates on the electrically induced orientation transformation in LC inside pores due to breaking of a surface anchoring.