Influence of the thickness and polarization charges on the electro-optical behaviour of twisted smectic C* cells |
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| Authors: | M. Ismaili G. Joly N. Isaert A. Anakkar |
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| Affiliation: | Laboratoire de Dynamique et Structure des Matériaux Moléculaires, U.P.R.E.S.A CNRS n° 8024, U.F.R. de Physique, Bat. P5 Université des Sciences et Technologies de Lille, F59655 Villeneuve d'Ascq Cédex, France |
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| Abstract: | This paper reports on the influence of both polarization charges and thickness on the light transmitted by twisted smectic C* (TSC) liquid crystal (LC) cells. A uniaxial model, based on the de Vries eigenmodes usually used for twisted structures like cholesteric LCs, is used to calculate the transmission variation of the TSC cells as a function of applied voltage or thickness for various values of spontaneous polarization. The results obtained are in quantitative agreement with experimental results found in the literature and emphasize the importance of polarization charges on the behaviour of TSC cells. The TSC light transmission exhibits a profile resembling the so-called V-shaped switching. |
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