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Temperature-induced tilt transition in the nematic phase of liquid crystal

Journal article
Authors Giovanni Barbero
Lachezar Komitov
Published in JOURNAL OF APPLIED PHYSICS
Volume 105
Pages 064516, 1-4
ISSN 0021-8979
Publication year 2009
Published at Department of Physics (GU)
Pages 064516, 1-4
Language en
Links link.aip.org/link/?JAPIAU/105/06451...
Keywords liquid crystal phase transformations, nematic liquid crystals, smectic liquid crystals
Subject categories Surfaces and interfaces, Structural and vibration physics, Critical phenomena (phase transitions), Liquid physics, Physical organic chemistry, Functional materials, Material physics with surface physics

Abstract

A temperature-induced transition from homeotropic to tilted alignment in the nematic phase of a liquid crystal with smectic C-nematic phase sequence was observed. The homeotropic alignment of the nematic phase at temperatures near the nematic-isotropic transition was found to undergo a continuous change to tilted one on decreasing the temperature. The appearance of smectic-C-like order at the solid surface on approaching the smectic C-nematic transition is assumed to be the origin of this temperature-induced alignment transition.

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