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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., 2018, 18 (3), 89—93. DOI: 10.18083/LCAppl.2018.3.89 |
![full text](/pdfs/2012_1_04_03_35_59_Adobe%20Reader.jpg)
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Electrorheology of Liquid Crystals
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S. V. Pasechnik1, D. V. Shmeliova1, S. S. Kharlamov1, O. A. Semina1, A. Sh. Saidgaziev1, V. G. Chigrinov2
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Author affiliations 1Problem Laboratory of Molecular Acoustics, Russian Technological University,
20 Sromynka 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
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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.
Keywords: liquid crystals, electrorheology, 4-cyano-4'-pentylbiphenyl
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