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Proceedings Paper

Light-induced Freedericksz transition in nematic cell with surface charge
Author(s): Igor P. Pinkevich; Mikhailo F. Lednei
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Paper Abstract

The equations for the light-induced Freedericksz transition threshold of the initial homeotropic director configuration are obtained and the solutions to them are found in analytical or numerical forms. Due to the surface charges the threshold value increases if the nematic static dielectric anisotropy is positive or decreases in the opposite case. The threshold value depends also on the director anchoring energy, Debye screening length and cell thickness. For each given value of the light wave electric vector which stabilizes the initial director configuration the critical value of the surface charge density is found at which this configuration is growing unstable.

Paper Details

Date Published: 11 March 1996
PDF: 5 pages
Proc. SPIE 2651, Liquid Crystal Materials, Devices, and Applications IV, (11 March 1996); doi: 10.1117/12.235351
Show Author Affiliations
Igor P. Pinkevich, Kiev National Univ. (Ukraine)
Mikhailo F. Lednei, Kiev National Univ. (Ukraine)

Published in SPIE Proceedings Vol. 2651:
Liquid Crystal Materials, Devices, and Applications IV
Ranganathan Shashidhar, Editor(s)

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