Hysteresis upon light-induced hydrodynamic reorientation of the director of a nematic liquid crystal

Oscillations and hysteresis in the behaviour of the director of a nematic liquid crystal were observed upon its light-induced hydrodynamic reorientation caused by direct volume expansion. The light propagated through the liquid crystal placed between crossed polarisers provides the feedback. This li...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2000-08, Vol.30 (8), p.745-746, Article 745
Main Authors: Akopyan, R S, Alaverdyan, R B, Vardanyan, A S, Chilingaryan, Yu S
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CRYSTALS
ELECTROMAGNETIC RADIATION
Exact sciences and technology
FLUIDS
Fundamental areas of phenomenology (including applications)
HYSTERESIS
LIQUID CRYSTALS
LIQUIDS
Optical materials
Optics
OSCILLATIONS
Physics
POLARIZATION
RADIATIONS
VISIBLE RADIATION
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Summary:Oscillations and hysteresis in the behaviour of the director of a nematic liquid crystal were observed upon its light-induced hydrodynamic reorientation caused by direct volume expansion. The light propagated through the liquid crystal placed between crossed polarisers provides the feedback. This light falls back on the liquid crystal and is absorbed by producing the volume expansion. A theory is suggested that describes the observed behaviour of the director of the nematic liquid crystal. (laser applications and other topics in quantum electronics)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2000v030n08ABEH001803