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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:38 |
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Conference: Bucharest University Faculty of Physics 2006 Meeting
Section: Polymer Physics
Title:
Monte Carlo Simulation of a Liquid Crystal Cell with Periodic Surface Gratings
Authors:
Emil Barna, Catalin Berlic, Valentin Barna
Affiliation:
University of Bucharest, Faculty of Physics, Department of Polymer Physics, P.O. Box MG 11, Bucharest, Măgurele
E-mail
barna_emil@yahoo.com
Keywords:
liquid crystal cell, surface grating, nematic director, Monte Carlo simulation
Abstract:
Twisted nematic liquid crystal displays (TN-LCD) have some poor viewing characteristics that originate from the asymmetrical nature of the liquid crystal alignment. On the other hand, viewing properties of such systems mainly depend on the anchoring properties of the molecules at the cell` surface and on the cell` geometry. In order to obtain a wide viewing of a TN-LCD, various methods have been developed. Among this, a cost effective solution is the use of periodic non-planar electrodes having a grating relief structure. Theoretical prediction of the nematic director structure in such a cell is of a considerable importance in determining the working properties of the TN-LCDs. We have used the molecular Monte Carlo simulation as an investigating tool of the liquid crystal structure in a cell having parallel gratings on the electrode` surface. We have obtained the local structure of the nematic director and the results have been compared with the experimental data.
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