Optical Switching and Image Storage by Means of Azobenzene Liquid-Crystal Films

American Association for the Advancement of Science (AAAS) - Tập 268 Số 5219 - Trang 1873-1875 - 1995
Tomiki Ikeda1, Osamu Tsutsumi1
1Precursory Research for Embryonic Science and Technology, Research Development Corporation of Japan, Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan

Tóm tắt

Liquid crystals are promising materials for optical switching and image storage because of their high resolution and sensitivity. Azobenzene liquid crystals (LCs) have been developed, in which azobenzene moieties play roles as both mesogens and photosensitive chromophores. Azobenzene LC films showed a nematic phase in trans isomers and no LC phase in cis isomers. Trans-cis photoisomerization of azobenzene with a laser pulse resulted in a nematic-to-isotropic phase transition with a rapid optical response of 200 microseconds.

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Tài liệu tham khảo

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American Association for the Advancement of Science (AAAS)

Tập 268 Số 5219

1873-1875

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