雙丙烯酸酯RM82為一款具有光敏性之主鏈型高分子液晶。在先前的研究中，利用雙光束與三光束氦氖雷射干涉光場照射RM82樣品，將照射後的樣品透過正交偏光顯微鏡觀察照射區後，發現樣品具有對應干涉光場之取向結構存在。本研究討論照射氦氖雷射干涉光場後，雙丙烯酸酯RM82樣品內分子聚合之情形。
雙丙烯酸酯RM82藉由雙光子吸收效應使其在非主要吸收波段之氦氖雷射照射下產生聚合。藉由檢測照射雙光束氦氖雷射干涉光場之RM82樣品，並討論樣品內條紋結構之液晶分子指向方向。分析RM82樣品在照射雙光束干涉光場後，其分子聚合鏈與干涉光場之關係。利用此結果可以進一步討論照射三光束氦氖雷射干涉光場對RM82樣品內部分子聚合結構之影響。

Diacrylate mesogen, RM82 is a kind of main chain liquid crystal polymers with photosensitive property. In previous studies, the RM82 samples were irradiated by two-beam and three-beam He-Ne laser interference field and the irradiated RM82 samples were observed using polarizing optical microscope (POM). It was found that the samples had a structure corresponding to the interference field. There were optical patterns of orientation structure which corresponding to the interference field observed by POM in the RM82 samples. In this study, RM82 samples were irradiated by He-Ne laser interference field, and the internal molecular polymerization of the samples were investigated.
The diacrylate RM82 sample was polymerized by a two-photon absorption effect in a non-predominant absorption wave band of He-Ne laser irradiation. The RM82 samples were irradiated by the two-beam He-Ne laser interference field and the direction of the liquid crystal molecules in the stripe structure was discussed. The relationship between the molecular polymer chains and the interference field was analyzed after irradiating the two-beam interference field. Using this result, we can further discuss the effect of three-beam He laser interference on the molecular structure of RM82 samples. Using this result, we can further discuss the effect of the internal molecular polymer structure of RM82 samples which irradiated by three-beam He-Ne laser interference field.

第一章 緒論 1
第二章 液晶介紹 2
2-1　液晶態 2
2-2　液晶的分類 2
2-3　桿狀液晶的相態 4
2-4　液晶基本物理特性 6
2-4-1　液晶分子指向與秩序參數 6
2-4-2　光學異向性 7
2-4-3　電學異向性 9
2-4-4　連續彈性體理論 10
2-5　高分子液晶簡介 12
2-5-1　高分子液晶分類 12
第三章 雙光子吸收效應簡介 15
3-1　背景介紹 15
3-2　雙光子吸收原理 15
3-3　雙光子吸收與單光子吸收之差異 16
3-4　雙丙烯酸酯材料介紹 17
3-4-1　雙丙烯酸酯之雙光子吸收測量 19
3-4-1.1　雙丙烯酸酯之非線性穿透率測量 20
3-4-1.2　Z-scan技術 23
第四章 實驗樣品製作與儀器介紹 26
4-1　樣品製作 26
4-1-1　玻璃基板清洗流程 26
4-1-2　液晶盒樣品製作 26
4-2　偏光顯微鏡與溫度控制系統 28
4-3　氦氖雷射干涉光場 30
4-3-1　雙光束干涉系統 30
4-3-2　三光束干涉系統 33
第五章 氦氖雷射干涉光場照射後之RM82樣品結構分析 37
5-1　雙光束氦氖雷射干涉於RM82樣品之響應 37
5-1-1　氦氖雷射對RM82樣品之聚合情形 37
5-1-2　RM82樣品之液晶分子指向討論 38
5-1-3 　RM82樣品結構討論 42
5-2　三光束氦氖雷射干涉於RM82樣品之響應 48
第六章　結論 53
參考文獻 55

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