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Title: Anchoring energy and orientational elasticity of a ferroelectric liquid crystal

Abstract

The dielectric susceptibility of a helix-free ferroelectric liquid crystal layer has been experimentally and theoretically studied as a function of the layer thickness. The investigation has been performed on the inner branch of the polarization hysteresis loop, in the region of a linear dependence of the polarization on the electric field. The experimental results are explained using the notion of effective layer thickness, which involves the characteristic distance {xi} over which the orienting effect of interfaces is operative. Comparison of the experimental data and theoretical results made it possible to estimate this distance as {xi} = 41 {mu}m and evaluate the anchoring energy (W = 2.8 Multiplication-Sign 10{sup -3}-1.1 Multiplication-Sign 10{sup -2} J/m{sup 2}) and the intralayer elastic constant (K Double-Prime Almost-Equal-To 1 Multiplication-Sign 10{sup -8}-3 Multiplication-Sign 10{sup -7} N).

Authors:
 [1];  [2]
  1. Russian Academy of Sciences, Nesmeyanov Institute of Organoelement Compounds (Russian Federation)
  2. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22069443
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 114; Journal Issue: 6; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; COMPARATIVE EVALUATIONS; ELASTICITY; ELECTRIC FIELDS; FERROELECTRIC MATERIALS; HYSTERESIS; INTERFACES; LAYERS; LIQUID CRYSTALS; PERMITTIVITY; POLARIZATION; THICKNESS; YOUNG MODULUS

Citation Formats

Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru, and Pozhidaev, E. P., E-mail: epozhidaev@mail.ru. Anchoring energy and orientational elasticity of a ferroelectric liquid crystal. United States: N. p., 2012. Web. doi:10.1134/S1063776112040097.
Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru, & Pozhidaev, E. P., E-mail: epozhidaev@mail.ru. Anchoring energy and orientational elasticity of a ferroelectric liquid crystal. United States. doi:10.1134/S1063776112040097.
Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru, and Pozhidaev, E. P., E-mail: epozhidaev@mail.ru. Fri . "Anchoring energy and orientational elasticity of a ferroelectric liquid crystal". United States. doi:10.1134/S1063776112040097.
@article{osti_22069443,
title = {Anchoring energy and orientational elasticity of a ferroelectric liquid crystal},
author = {Kaznacheev, A. V., E-mail: kazna@ineos.ac.ru and Pozhidaev, E. P., E-mail: epozhidaev@mail.ru},
abstractNote = {The dielectric susceptibility of a helix-free ferroelectric liquid crystal layer has been experimentally and theoretically studied as a function of the layer thickness. The investigation has been performed on the inner branch of the polarization hysteresis loop, in the region of a linear dependence of the polarization on the electric field. The experimental results are explained using the notion of effective layer thickness, which involves the characteristic distance {xi} over which the orienting effect of interfaces is operative. Comparison of the experimental data and theoretical results made it possible to estimate this distance as {xi} = 41 {mu}m and evaluate the anchoring energy (W = 2.8 Multiplication-Sign 10{sup -3}-1.1 Multiplication-Sign 10{sup -2} J/m{sup 2}) and the intralayer elastic constant (K Double-Prime Almost-Equal-To 1 Multiplication-Sign 10{sup -8}-3 Multiplication-Sign 10{sup -7} N).},
doi = {10.1134/S1063776112040097},
journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 6,
volume = 114,
place = {United States},
year = {2012},
month = {6}
}