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Title: Effect of boundary surfaces on the effective dielectric susceptibility of the helical structure of a ferroelectric liquid crystal

We present the results of a theoretical investigation of the effect of boundary surfaces of a liquidcrystal cell on the effective dielectric susceptibility of the helical structure of a ferroelectric smectic C* liquid crystal (FLC). We consider for this purpose the deformation and untwisting of the helix by solid surfaces bounding the FLC layer. An analytic expression is obtained for critical thickness d{sub c} of the liquid-crystal layer, for which untwisting of the helix by surfaces takes place. In calculating the effective dielectric susceptibility, it is shown that the deformation of the FLC helix by the boundaries leads to the occurrence of anisotropy in the effective dielectric susceptibility in the plane perpendicular to the helix axis.
Authors:
 [1] ;  [2]
  1. Russian Academy of Sciences, Nesmeyanov Institute of Ogranoelement Compounds (Russian Federation)
  2. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22472118
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 121; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; DEFORMATION; DIELECTRIC PROPERTIES; FERROELECTRIC MATERIALS; LAYERS; LIQUID CRYSTALS; SOLIDS; SURFACES