本論文研究重點是以雙頻液晶為材料，製作成反向染料混摻高分子穩固雙頻膽固醇液晶光閥，此反向液晶光閘是由雙頻液晶HEF951700、旋光物S811、高分子RM257、二色性染料所組成。最後，藉由使用適當的旋光物濃度和高分子濃度，我們成功製備出雙穩態反向染料混摻高分子穩固雙頻膽固醇液晶光閥，其可以藉由施加低頻電場(60Hz，±32V)或高頻電場(300kHz，±32V)在散射態和穿透態之間做切換，並在移除電場後仍可維持住狀態，並降低傳統反射式膽固醇液晶元件反射可見光所需高驅動電壓。並在移除電場後仍可維持住狀態，它可以應用於綠建築中的綠能智慧型窗戶之改良。

In this study, we use a dual-frequency liquid crystal as device material, we constructed a reverse-mode dye dopend polymer stabilized dual frequency cholesteric texture (DDPSDFCT) light shutter. reverse-mode DDPSDFCT cells This were fabricated using a dual frequency liquid crystal HEF951700, chiral dopant S811, polymer RM257, Dichronic dyes. We using chiral dopant (Cc) and monomer (Cp) in specific concentrations, a bistable light shutter using reverse-mode dye dopend polymer-stabilized dual-frequency cholesteric textures (DDPSDFCT) was successfully developed. It is switched between a focal-conic and a planar state by applying low or high frequency electric field, which was maintained even after the electric field was removed. Therefore, the proposed light shutter is extremely energy efficient and can be incorporated into the construction of smart windows for green buildings.

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