Photoresponsive electro-optical effect of liquid crystalline polymer/low-molecular-weight liquid crystal composite system

Tisato Kajiyama; Hirotsugu Kikuchi; Kimiaki Nakamura

doi:10.1117/12.151210

13 August 1993 Photoresponsive electro-optical effect of liquid crystalline polymer/low-molecular-weight liquid crystal composite system

Tisato Kajiyama, Hirotsugu Kikuchi, Kimiaki Nakamura

Author Affiliations +

Proceedings Volume 1911, Liquid Crystal Materials, Devices, and Applications II; (1993) https://doi.org/10.1117/12.151210
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1993, San Jose, CA, United States

Abstract

Thermotropic liquid crystalline polymers (LCP) with mesogenic side-chain groups have been arousing much interest due to their possibilities for applications as electro-optical devices, because LCP exhibits both the mesomorphic inherent characteristics of liquid crystal (LC) and the mechanical characteristics of polymeric materials. Recently, various kinds of LCP have been synthesized, and their electro-optical properties have been studied extensively. The authors have reported on a large area-flexible light valve and a reversible and bistable electro- optical effect based on light scattering for (polymer/LC) composite films and, for smectic phase of (LCP/low molecular weight liquid crystal:LC) composite systems, respectively. The LCP/LC composite is highly transparent state upon application of a high frequency (1 kHz) a.c. electric field. The composite turns into a remarkable light scattering state upon the application of a low frequency (DC or several Hz) one.

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Tisato Kajiyama, Hirotsugu Kikuchi, and Kimiaki Nakamura "Photoresponsive electro-optical effect of liquid crystalline polymer/low-molecular-weight liquid crystal composite system", Proc. SPIE 1911, Liquid Crystal Materials, Devices, and Applications II, (13 August 1993); https://doi.org/10.1117/12.151210

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