8 February 2018 Smart window using a thermally and optically switchable liquid crystal cell
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Abstract
Light shutter technologies that can control optical transparency have been studied extensively for developing curtain-free smart windows. We introduce thermally and optically switchable light shutters using LCs doped with push-pull azobenzene, which is known to speed up thermal relaxation. The liquid crystal light shutter can be switched between translucent and transparent states or transparent and opaque states by phase transition through changing temperature or photo-isomerization of doped azobenzene. The liquid crystal light shutter can be used for privacy windows with an initial translucent state or energy-saving windows with an initial transparent state.
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Seung-Won Oh, Sang-Hyeok Kim, Jong-Min Baek, Tae-Hoon Yoon, "Smart window using a thermally and optically switchable liquid crystal cell", Proc. SPIE 10555, Emerging Liquid Crystal Technologies XIII, 1055516 (8 February 2018); doi: 10.1117/12.2289457; https://doi.org/10.1117/12.2289457
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