博碩士論文 982206034 詳細資訊




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姓名 陳建昇(Chien-Sheng Chen)  查詢紙本館藏   畢業系所 光電科學與工程學系
論文名稱 高分子分散液晶薄膜用於可調變全像影像之研究
(Study of tunable holographic image in polymer dispersed liquid crystal films)
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摘要(中) 在本論文中,我們將光聚合物與液晶混合製作成高分子分散液晶
(polymer dispersed liquid crystal, PDLC)薄膜,利用這種材料記錄全像影像資訊,並且藉由外加電壓改變液晶的排列方向,使液晶折射率改變,而做出可由電壓調變的全像片。在實驗方面可分為兩個部分,第一部分為利用高分子分散液晶記錄光柵並分析其光電特性。我們利用NOA61 與E7 混合製作成PDLC薄膜並以雙光束干涉的方式記錄光柵於薄膜中,所記錄的光柵在外加0V 電壓時繞射效率為4.7%,而加入40V 電壓時繞射效率提升至11.4%。
第二部分為複製全像片影像於高分子分散液晶。我們將可360 度
環繞觀賞的成像面圓盤型複合全像片做為複製母片,利用單光束複製
系統,將影像資訊複製於高分子分散液晶中,而隨著外加電壓上升,
影像亮度也隨之提升,具有可由電壓調變的效果。
摘要(英) In this study, we use polymer dispersed liquid crystal (PDLC) films to record holographic image. The PDLC sample is fabricated by using the mixture with photopolymer and liquid crystal. We reorient the director of liquid crystal by applied electric field so that the refraction index of liquid crystal will be changed. Therefore, we can use this material as electric tunable holographic recording medium.
In this experiment, the PDLC sample is fabricated by using the mixture with NOA61 and E7 and it is used to record grating by two-beams interference. At zero field, the diffraction is 4.7%, at 40V applied field, the diffraction is up to 11.4%. In holographic image record, we use 360 degree viewable image-plane disk type multiplex holograms as master hologram, and copy image information from master hologram to PDLC sample by single-beam copying system. The image in PDLC sample can be switched by applied electric field.
關鍵字(中) ★ 高分子分散液晶
★ 複合全像術
關鍵字(英) ★ holography
★ polymer dispersed liquid crystal
論文目次 摘要 I
Abstract II
圖目錄 V
表目錄 VII
第一章 緒論1
1.1 前言 1
1.2 全像術與液晶的應用 3
1.3 本章結論與研究動機 6
第二章 基本原理 8
2.1 液晶介紹與起源 8
2.1.1 液晶分類 9
2.1.2 液晶的光學特性 10
2.1.3 液晶的介電異向性 13
2.2 全像術(Holography)簡介14
2.2.1 波前的記錄與重建 14
2.2.2 全像光柵的分類 17
2.3 高分子分散液晶(Polymer Dispersed Liquid Crystal)簡介20
2.3.1 PDLC 的形成原理 21
2.3.2 全像式高分子分散液晶(Holographic PDLCs) 22
2.4 結論 24
第三章 實驗架構與結果 25
3.1 實驗材料與樣品製作 25
3.1.1 材料介紹 25
3.1.2 樣品製作 26
3.2 雙光束干涉實驗 29
3.2.1 利用波長325nm 光源記錄之實驗架構 29
3.2.2 利用波長325nm 光源記錄之實驗結果 31
3.2.3 利用波長514nm 光源記錄之實驗架構 35
3.2.4 利用波長514nm 光源記錄的實驗結果 36
3.3 複製全像片影像資訊於高分子分散液晶實驗 44
3.3.1 複製母片影像資訊於高分子分散液晶實驗 45
3.3.2 複製子片影像資訊於高分子分散液晶實驗 47
3.4 結論 49
第四章 總結與未來工作 51
4.1 結論 51
4.2 未來工作 52
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指導教授 陳啟昌、徐桂珠、鄭益祥
(Chii-Chang Chen、Kuei-Chu Hsu、Yih-Shyang Cheng)
審核日期 2011-7-27
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