臺灣博碩士論文加值系統

本研究目的為建立一可大量生產具有奈米全彩光柵特性之可撓性光子晶體(Photonic Crystal)結構之製程，並探究彈性光子晶體之光學特性與未來之可能應用。本研究以具奈米半球結構之陽極氧化鋁膜(Anodic Aluminum Oxide)背阻障層為模板，透過電鑄鎳製程製備用於可重覆壓印具有光子晶體結構之Polycarbonate(PC)的奈米鎳模具。最後透過奈米熱壓印製程將奈米鎳模具上之結構轉移至Polycarbonate (PC) 薄膜，製作可撓性光子晶體結構。
本研究製備之可撓性PC光子晶體薄膜可做為白光光柵分光器，透過不同之入射光角度或觀測方向皆能觀察到結構色變化，即便以室內光源照射亦能顯示明亮的結構色。此外；透過幾何光學與幾何形變改變入射光角度，觀察PC光子晶體繞射特性，發現於彈性PC表面皆能產生多樣的顏色，並確認此光子晶體可轉移部份光能量至第二階繞射光譜。又彈性PC光子晶體薄膜亦可透過形變來調整結構色的顯現，達到顯示隱藏圖案的功能，亦可將螢光圖案製作於具有光子晶體結構之PC薄膜之背面，使得具光子晶體結構之PC薄膜可分別或同時於可見光與紫外光照射下顯示不同顏色與圖案，提供多重防偽功能。

In this study, a method that enables the mass production of flexible photonic crystal structures possessing nano full-color grating, allowing diverse structural colorations, is presented. Optical properties of the flexible photonic crystal structures and their feasible applications are investigated. The uniformly distributed nano-hemisphere array of the barrier layer of an anodic aluminum oxide (AAO) membrane is used as the template for nickel electroforming to obtain a nickel nano-mold. The nickel nano-mold is further used for repeatedly imprinting of flexible Polycarbonate (PC) films with a designed photonic crystal structure.
The fabricated flexible PC films can be used as a white light grating. By means of different angles of incidence or different viewing angles, the structural color change can be clearly observed, even under indoor visible light. By means of different angles of incidence or different directions of observation, the structural color change can be clearly observed. In addition, the fabricated flexible PC films can produce a variety of colors by changing the angle of the incident light through geometric deformation. The phenomenon results from the unique diffraction characteristics of the flexible PC films. Through the Bragg diffraction formula, it is confirmed that the photonic crystal structure on the flexible PC films can transfer part of the light energy to the second order diffraction spectrum. Furthermore, the flexible PC films can reveal different structural colorations under bending or coating of transparent substances with different surface tensions to exploit its optical properties for various applications. In addition, an anti-counterfeiting feature is also successfully achieved when fluorophores are patterned on the back of the polymer film and excited with UV-light irradiation.

摘要 i
Abstract ii
圖目錄 v
表目錄 vii
第一章、 緒論 1
1.1.研究動機 1
1.2. 研究目的 2
第二章、文獻回顧 3
2.1. 光子晶體概念 3
2.1.1. ㄧ維光子晶體 3
2.1.2. 二維光子晶體 4
2.1.3. 三維光子晶體 5
2.1.4. 光子晶體應用 6
2.2. 光子晶體製程介紹 7
2.3. 陽極氧化鋁(Anodic Aluminum Oxide, AAO)光子晶體 10
2.4. 光子晶體於防偽標籤之發展 12
第三章、材料與方法 16
3.1. Polycarbonate光子晶體結構薄膜之製備 16
3.1.1. 陽極氧化鋁膜製程 16
3.1.2. 黃光微影製程 17
3.1.3. 奈/微米電鑄鎳模具製造 18
3.1.4. 奈米熱壓印製程 18
3.1.5. 螢光圖案化製程 18
3.2. 光子晶體表面特徵觀測與光譜量測 19
3.2.1. 場發射掃描式電子顯微鏡檢測 19
3.2.2. 原子力顯微鏡檢測 19
3.2.3. 數位照片之拍攝裝置架設 20
3.2.4. 光子晶體Polycarbonate 薄膜之光譜量測 21
第四章、結果與討論 22
4.1. 陽極氧化鋁膜及PC 薄膜之奈米結構 22
4.1.1. 掃描式電子顯微鏡觀測陽極氧化鋁膜表面形貌 22
4.1.2. 陽極氧化鋁膜、奈微米鎳模具與PC 薄膜表面之奈米結構特徵分析 24
4.2. 以陽極氧化鋁膜與PC薄膜表面奈米結構作為光子晶體之光學特性探討 26
4.2.1. 陽極氧化鋁膜及PC薄膜表面奈米結構之光譜分析 26
4.2.2. 幾何光學及幾何形變對光子晶體之變色影響 30
4.2.3. 螢光圖案化具光子晶體結構PC薄膜 32
第五章、結論與未來展望 33
5.1. 結論 33
5.2. 未來展望 34
奈米半球結構尺寸變化 35
具拉伸特性之奈米半球結構 35
參考文獻 36

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