研究生: |
吳政哲 Cheng-Che Wu |
---|---|
論文名稱: |
雙穩態調光薄膜的製備與光電性質研究探討 Preparation and Characterization of Bi-stable Light Shutters by Polymer Stabilized Cholesteric Texture Films |
指導教授: |
李俊毅
Jiunn-Yih Lee |
口試委員: |
賴秋君
none 蘇清淵 Ching-Iuan Su |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2010 |
畢業學年度: | 98 |
語文別: | 中文 |
論文頁數: | 108 |
中文關鍵詞: | 高分子穩固膽固醇液晶 、雙穩態 、調光薄膜 |
外文關鍵詞: | bi-stable, polymer stabilized cholesteric texture, light shutter |
相關次數: | 點閱:191 下載:3 |
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利用旋光基濃度10wt%的向列型液晶形成之膽固醇液晶後又加入2wt% 之BAB紫外光聚合單體以及少量的光起始劑,利用上述製程手法來進行元件的製作,便可完成雙穩態調光薄膜的製備。當施加一大於其平行方向恢復能力之電壓值並關掉後,膽固醇液晶分子的排列狀態與高分子拉拔力的互相影響下便會形成光散射狀態之focal-conic狀態,此時為遮蔽度高的情形;當調光薄膜加溫高於液晶澄清點溫度後,降回至室溫即可恢復呈現planar的狀態,此時為光穿透度良好之情形,兩種穩態因高分子的力量以及基板之配向能力而能夠持續維持透明以及散射兩狀態,不因時間而衰退改變,得到電能與熱能交替控制的雙穩態調光薄膜。
We constructed a cholesteric liquid crystal/polymer network system and studied the aligning effects of the polymer network on the liquid crystal. We stabilized different liquid crystal states by applying the different voltage when polymerization. polymer stabilized cholesteric texture (PSCT) cells were fabricated using the commercially host liquid crystal DN-113245/ZLI-811 and acrylate monomer BAB. Using a proper polymer network, we developed a bistable PSCT light shutter. The PSCT light shutter is transparent state at zero field and became opaque when electro-induced to the focal-conic state. The light shutter is elevated temperatures higher than cleaning point, it is switched into a transparent state and remains this state when cooled to room temperatures.
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