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Proceedings Paper

Pattern formation in homeotropic nematic induced by mechanical rectilinear and elliptical oscillatory excitation
Author(s): T. Boerzsoenyi; A. P. Krekhov; O. A. Scaldin; A. Buka
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Paper Abstract

A homeotropic nematic liquid crystal was exposed to low frequency oscillatory shear. In the presence of rectilinear shear a stationary roll pattern was found above a critical amplitude. In case of elliptical excitation a spatially nonuniform slow rotation of the director was observed, which lead to the propagation of the so-called phase waves in two different systems: in a two-phase system and in a homeotropic nematic layer in the presence of a destabilizing external electric filed. Phase waves also have been observed in the ultrasonic frequency range at much smaller shear amplitudes.

Paper Details

Date Published: 1 January 1998
PDF: 4 pages
Proc. SPIE 3319, Liquid Crystals: Chemistry and Structure, (1 January 1998);
Show Author Affiliations
T. Boerzsoenyi, Research Institute for Solid State Physics (Hungary)
A. P. Krekhov, Institute of Molecule and Crystal Physics (Russia)
O. A. Scaldin, Institute of Molecule and Crystal Physics (Russia)
A. Buka, Research Institute for Solid State Physics (Hungary)

Published in SPIE Proceedings Vol. 3319:
Liquid Crystals: Chemistry and Structure
Marzena Tykarska; Roman S. Dabrowski; Jerzy Zielinski, Editor(s)

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