本論文研究題目為『以光導電薄膜之液晶元件探討光偏折現象』。我們利用非對稱漸進式光柵光罩搭配PVK光致導電的特性製作一導電率呈梯度分佈的電極，外加一直流電壓使其液晶層的空間週期排列為非對稱性結構，形成稜鏡光柵，一線性偏振光入射樣品時會感受到週期性的折射率分佈因而產生非對稱性的繞射點，且光強會集中在某一階繞射點，藉由提升其繞射效率達到光偏折特性。

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目錄
摘要 ........................................................................................... Ⅰ
致謝 ........... ............................................................................... Ⅱ
目錄 ........................................................................................... Ⅲ
圖表索引 ................................................................................... Ⅵ
第一章 簡介
§1-1 前言 ................................................................................... 1
§1-2 液晶簡介 ............................................................................ 2
§1-2-1 何謂液晶(Liquid Crystal) ................................................. 2
§1-2-2 液晶的分類 ..................................................................... 3
§1-3 液晶物理 ........................................................................... 10
§1-3-1 液晶分子排列的秩序參數 ............................................. 10
§1-3-2 液晶的光學異向性(Optical Anisotropic) ....................... 11
§1-3-3 液晶的連續體彈性形變理論.......................................... 14
§1-3-4 外加場對絕緣向列液晶的影響...................................... 15
第二章 相關理論
§2-1 相位光柵繞射理論 ............................................................ 19
§2-2 稜鏡光柵繞射效率推導 .................................................... 20
§2-3 繞射效率模擬 ................................................................... 24
§2-4 光致導電高分子導電機制 ................................................ 26
第三章 樣品製作與儀器架設
§3-1 光罩製作 .......................................................................... 28
§3-2樣品製作 ........................................................................... 29
§3-2-1材料介紹 ........................................................................ 29
§3-2-2樣品製作 ........................................................................ 31
§3-2-3 樣品檢測 ....................................................................... 35
§3-3 實驗儀器架設 .................................................................. 38
§3-3-1 測量PVK導電率與其曝光時間的關係 .......................... 38
§3-3-2 測量樣品隨外加電壓所產生的0、±1階繞射效率.......... 40
§3-3-3 透過偏光顯微鏡觀察樣品隨外加直流電壓的光學現象 41
第四章 實驗結果與討論
§4-1 PVK吸收光譜 ................................................................. 42
§4-2 非對稱漸進式光柵光罩 .................................................. 42
§4-3 PVK導電率與曝光時間的關係 ..................................... 43
§4-4 曝光時間與繞射效率的關係 .......................................... 44
§4-5 光柵週期與繞射效率的關係 ............................................ 48
§4-6 樣品厚度與繞射效率的關係 ............................................ 51
§4-7 樣品最佳條件化的光學現象 ............................................ 54
§4-7-1 繞射圖形隨電壓的變化討論......................................... 54
§4-7-2 樣品於偏光顯微鏡討論 ................................................ 56
第五章 總結與未來展望
§5-1 總結 .................................................................................. 59
§5-2 未來展望 .......................................................................... 60
參考文獻 ................................................................................... 61

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