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題名: Polymer-Stabilized Reflective Fingerprint Cholesteric Texture Grating
作者: Lin, Chi-Huang;Fuh, Andy Ying-Guey;Mo, Tin-Shan;Huang, Chi-Yen
貢獻者: 光電科技研究所
關鍵詞: Cholesteric liquid crystal;Bragg reflection;Fingerprint texture;Polymer-stabilized
日期: 2002-12
上傳時間: 2013-01-07T02:10:19Z
出版者: The Japan Society of Applied Physics
摘要: This study describes a reflective grating. It is fabricated using a simple process consisting of thermal annealing followed by UV irradiation through a grating photomask. The sample is made from a mixture of cholesteric liquid crystal and prepolymer materials. A cholesteric liquid crystal has a planar texture, which changes under an applied external field, thus forming the electrically switchable reflective grating. The multistability of the grating can be achieved by applying various voltage pulses; the memory effect of the grating's gray-scale persists for two months. The high switching contrast ratio and fast response of the grating are also discussed.
關聯: Jpn. J. Appl. Phys., 41(12): 7441-7446
顯示於類別:[光電科技研究所] 期刊論文


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