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Proceedings Paper

Liquid crystal alignment on the polymer substrates irradiated by plasma beam
Author(s): Oleg V. Yaroshchuk; Yu. Zakrevskyy; A. Dobrovolskyy; S. Pavlov
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Paper Abstract

The curing of polymer substrates with collimated beam of accelerated plasma is considered as a new method of LC alignment. As an aligning polymer we used polyninylcinnamate (PVCN), well known photoaligning material. Pretilt angle and anchoring energy of LC on PVCN substrates is investigated as a function of the incidence angle, beam energy and current density, and the time of irradiation. The parameters of LC alignment on the substrates treated with plasma beam are compared with the corresponding parameters of the UV cured PVCN substrates. It is shown that azimuth anchoring energy on the plasma treated substrates is close to that one obtained with UV curing. At the same time, generated pretilt angle is higher and much more thermally stable on the plasma treated PVCN layers. It is also considered possibility of the combined curing with plasma dn UV light.

Paper Details

Date Published: 30 May 2001
PDF: 5 pages
Proc. SPIE 4418, Eighth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 441808 (30 May 2001); doi: 10.1117/12.428331
Show Author Affiliations
Oleg V. Yaroshchuk, Institute of Physics (Ukraine)
Yu. Zakrevskyy, Institute of Physics (Ukraine)
A. Dobrovolskyy, Institute of Physics (Ukraine)
S. Pavlov, Institute of Physics (Ukraine)

Published in SPIE Proceedings Vol. 4418:
Eighth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals
Gertruda V. Klimusheva; Andrey G. Iljin, Editor(s)

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