Thermo-recording in (side chain type smectic A liquid crystal polymer/nematic liquid crystal/chiral dopant/dichroic dye) composite with a low power laser |
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| Authors: | Huai Yang Hirokazu Yamane Hirotsugu Kikuchi Tisato Kajiyama |
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| Institution: | 1. State Key Laboratory of Polymer Materials Engineering of China;2. , College of Polymer Science and Engineering, Sichuan University , P.R. China |
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| Abstract: | Thermo-recording in a side chain type smectic A liquid crystal polymer (SmA-LCP)/nematic liquid crystal (N-LC)/chiral dopant/dichroic dye] composite has been realized by using 2mW of power from a He-Ne laser. The laser irradiation-induced phase transitions of smectic A (SmA) → chiral nematic (N*) → SmA formed the dominant thermo-recording mechanism in the composite. Thermo-recording in the (SmA-LCP/N-LC/chiral dopant/dichroic dye) composite exhibited a higher contrast when compared with the non-polymeric (SmA-LC)/N-LC/chiral dopant/dichroic dye composite. |
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| Keywords: | polyimide alignment layer vertical alignment liquid crystal |
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