Transmittance of dispersed nematic/polymer systems of the NCAP type

被引:0
|
作者
Afonin, OA [1 ]
Nazvanov, VF [1 ]
机构
[1] Saratov State Univ, Saratov 410601, Russia
关键词
D O I
10.1134/1.1262904
中图分类号
O59 [应用物理学];
学科分类号
摘要
A stationary effect of the electric-field-induced variation of the transmittance of thin-film disperse systems was studied theoretically. The systems consisting of a nematic liquid crystal (NLC) and a polymer (NCAP-type systems) represent flattened spheroid droplets with a bipolar NLC structure. These systems are characterized by a nonmonotonic dependence of the optical transmittance on the applied field strength for the normal incidence of light. This dependence is interpreted within the framework of a proposed phenomenological model based on the approximations of single scattering and anomalous diffraction. Experimental verification of the model is performed for dispersed systems with a poly(vinyl alcohol) matrix. A good agreement of the theoretical and experimental results is obtained. (C) 2000 MAIK "Nauka/Interperiodica".
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页码:447 / 451
页数:5
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