臺灣博碩士論文加值系統

本研究在Kretschmann組態下激發長程表面電漿，利用高低折射率對稱膜堆使得對稱膜堆等效導納匹配金屬薄膜上下導納，進而激發出長程表面電漿，而在實際製鍍薄金屬膜時，往往因為厚度很薄，薄膜尚未成膜其呈現島狀結構，造成金屬性下降，而利用對稱膜堆導納匹配方法，可以增加長程表面電漿傳播長度。
研究方法以光學導納分析各種等效膜層結構對金屬薄膜內長程表面電漿激發態的影響，同時也藉由反射率角頻譜中的全反射衰減曲線的半寬度，了解傳播長度在不同組態下的變化情形。

This study is using the symmetric film stack to excite long range surface plasmon in the Kretschmann configuration and match admittance of metal with admittance of symmetric film stack.
With deceasing thickness of deposited silver film, the micro structure is an island film. Therefore, the refractive index is different from that bulk silver. By using symmetric film stack matching method, the propagation length of long-range surface plasmon can be extended.
Optical admittance method can analyze the effect of the symmetric film stack on propagation length of surface plasmon. The half width of ATR curve is observed from the reflection angular spectrum. Our method offers the way to analyze the dependence of propagation length on different structures.

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章 緒論 1
1.1 文獻回顧 1
1.2 二氧化矽薄膜 2
1.3 二氧化鈦薄膜 3
1.4 表面電漿簡介 4
1.5 電漿傳播長度 7
1.6 稜鏡激發表面電漿 8
1.6.1 Otto組態 9
1.6.2 Krestchmann組態 10
1.6.3 Sarid組態 10
1.7 增加傳播長度 11
第二章 長程表面電漿理論 12
2.1 Sarid方法 12
2.2等效電漿傳播常數 14
2.3光學導納 17
2.3.1膜矩陣 18
2.3.2斜向導納 20
2.3.3對稱膜堆 21
2.4單層表面電漿導納 23
2.4.1三層結構長程表面電漿導納 25
2.4.2多層膜組態 27
第三章 模擬 30
3.1模擬一 30
3.1.1 BK7/SiO2 /Ag/SiO2/Air configuration 30
3.1.2 BK7/Air/Ag/Air configuration 32
3.1.3 Prism/symmetric film stack/Ag/Air configuration 34
3.2模擬二 37
3.2.1 BK7/SiO2/Ag/symmetric film stack/Air configuration 37
第四章 實驗 41
4.1 穿透式光譜儀量測 41
4.2 反射率角頻譜量測 42
4.3 蒸鍍系統 42
4.4 實驗結果 43
第五章 結論 56
參考文獻 57

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