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Title: Mechanisms of Rotational Dynamics of Chiral Liquid Crystal Droplets in an Electric Field

Abstract

The dynamics of the orientational structure of chiral nematic (CN) droplets in an isotropic medium in dc and ac electric fields is investigated by the polarized light microscopy technique. It is shown theoretically that the dynamics of rotational processes in these kinds of systems is determined by electroconvective processes developing due to the flexoelectric polarization associated with the initial configuration of the director field in droplets. It is established experimentally that the linear and quadratic regions of dependence of the rotational velocity of droplets on the electric field strength are explained by the above-mentioned mechanisms. Numerical simulation on the basis of the approach developed gives good agreement with experimental data.

Authors:
; ; ;  [1]
  1. Russian Academy of Sciences, Institute of Molecules and Crystals Physics, Ufa Scientific Center (Russian Federation)
Publication Date:
OSTI Identifier:
22750015
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 126; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; DROPLETS; ELECTRIC FIELDS; LIQUID CRYSTALS

Citation Formats

Skaldin, O. A., Tarasov, O. S., Timirov, Yu. I., E-mail: timirov@anrb.ru, and Basyrova, E. R. Mechanisms of Rotational Dynamics of Chiral Liquid Crystal Droplets in an Electric Field. United States: N. p., 2018. Web. doi:10.1134/S1063776118010181.
Skaldin, O. A., Tarasov, O. S., Timirov, Yu. I., E-mail: timirov@anrb.ru, & Basyrova, E. R. Mechanisms of Rotational Dynamics of Chiral Liquid Crystal Droplets in an Electric Field. United States. doi:10.1134/S1063776118010181.
Skaldin, O. A., Tarasov, O. S., Timirov, Yu. I., E-mail: timirov@anrb.ru, and Basyrova, E. R. Thu . "Mechanisms of Rotational Dynamics of Chiral Liquid Crystal Droplets in an Electric Field". United States. doi:10.1134/S1063776118010181.
@article{osti_22750015,
title = {Mechanisms of Rotational Dynamics of Chiral Liquid Crystal Droplets in an Electric Field},
author = {Skaldin, O. A. and Tarasov, O. S. and Timirov, Yu. I., E-mail: timirov@anrb.ru and Basyrova, E. R.},
abstractNote = {The dynamics of the orientational structure of chiral nematic (CN) droplets in an isotropic medium in dc and ac electric fields is investigated by the polarized light microscopy technique. It is shown theoretically that the dynamics of rotational processes in these kinds of systems is determined by electroconvective processes developing due to the flexoelectric polarization associated with the initial configuration of the director field in droplets. It is established experimentally that the linear and quadratic regions of dependence of the rotational velocity of droplets on the electric field strength are explained by the above-mentioned mechanisms. Numerical simulation on the basis of the approach developed gives good agreement with experimental data.},
doi = {10.1134/S1063776118010181},
journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 2,
volume = 126,
place = {United States},
year = {2018},
month = {2}
}