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

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776115080099· OSTI ID:22472118

Kaznacheev, A. V., E-mail: [e-mail] ^[1]; Pozhidaev, E. P., E-mail: [e-mail] ^[2]

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1. Russian Academy of Sciences, Nesmeyanov Institute of Ogranoelement Compounds (Russian Federation)
2. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)

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.

• OSTI ID: 22472118
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 121, Issue 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
DEFORMATION
DIELECTRIC PROPERTIES
FERROELECTRIC MATERIALS
LAYERS
LIQUID CRYSTALS
SOLIDS
SURFACES