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論文中文名稱:以斜向沉積技術研製金屬奈米螺旋結構並應用於表面增強拉曼散射(SERS)之研究 [以論文名稱查詢館藏系統]
論文英文名稱:Surface-enhanced Raman scattering from silver and gold nano-helix arrays fabricated using glancing angle deposition [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:電資學院
系所名稱:光電工程系研究所
畢業學年度:103
畢業學期:第二學期
中文姓名:黃炯崴
英文姓名:Huang Jyong-Wei
研究生學號:102658023
學位類別:碩士
語文別:中文
口試日期:2015/07/08
指導教授中文名:任貽均
口試委員中文名:嚴大任;李正中;林宗賢
中文關鍵詞:金屬螺旋結構斜向沉積技術表面增強拉曼散射
英文關鍵詞:glancing angle depositionnano-helix arraysurface-enhanced Raman scattering
論文中文摘要:本研究透過斜向蒸鍍技術結合基板冷卻系統,並控制蒸鍍速率與基板轉速之關係,成功的製鍍出銀與金奈米螺旋結構,隨著不同轉速,可以沉積出螺旋狀(spiral-like)或螺絲狀(screw-like)的金奈米螺旋陣列,並量測其左旋偏極與右旋偏極之穿透率、反射率與吸收率,並運用此奈米螺旋陣列做為表面增強拉曼散射(Surface Enhance Raman Scattering, SERS)基板,量測其靈敏度後發現金奈米螺旋結構可量測到相當低濃度的待測溶液,相較於二維的銀奈米柱陣列,其增強因子(Enhancement Factor)增強約五十倍,為探究其原因,本研究導入近場模擬軟體,對該結構之電場增強區域加以探討。
論文英文摘要:Metal nano-helix arrays (NHAs) were fabricated by glancing angle deposition (GLAD) in a substrate cooling system. During deposition, the substrate was cooling and the spin rate was tuned to yield a spiral-like or screw-like silver and gold nano-helix arrays. The left (right)-handed circular polarized transmittance, reflectance and extinctance of these NHAs were measured and compared. Next, the NHAs were used as surface-enhanced Raman scattering (SERS) substrates. It is demonstrated that the spiral-like Au nano-helix array exhibited strongest SERS enhancement for an ultra-low concentration analyte. The SERS peak intensities of the spiral-like Au nano-helix array are so large that the enhancement factor is at least 50 times larger than that of slanted Ag nano-rod array. The finite-difference time-domain (FDTD) simulations were performed based on the SEM images to investigate the local field enhancement area within the Au NHA.
論文目次:中文摘要 i
英文摘要 ii
致謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章 緒論與文獻回顧
1.1前言 1
1.2文獻回顧
1.2.1二維與三維表面增強拉曼散射基板之介紹 2
1.2.2斜向蒸鍍技術應用於表面增強拉曼散射基板之發展 5
1.2.3斜向蒸鍍技術搭配基板冷卻系統之應用 10
1.2.4螺旋結構之模擬與分析 15
1.3研究動機 19
1.4原理
1.4.1斜向沉積技術 20
1.4.2拉曼散射 21
1.4.3表面增強拉曼散射 22
1.4.4增強因子 22
1.4.5擴散常數與奈米結構之關係 23
第二章 實驗架構
2.1鍍膜系統 25
2.2 實驗流程 27
2.3斜向蒸鍍搭配液態氮冷卻系統製鍍前注意事項 28
2.4金屬奈米斜柱陣列製鍍方式 29
2.5金屬奈米螺旋陣列結構製鍍方式 29
第三章 量測架構
3.1穿透式與反射式光譜量測系統 31
3.2左右旋穿透式與反射式光譜量測系統 32
3.3拉曼光譜量測系統 33
第四章 實驗結果分析與討論
4.1薄膜之微觀結構與製鍍參數探討 34
4.2光學特性量測 41
4.3表面增強拉曼散射強度之比較 46
4.4 FDTD模擬與分析 54
第五章 結論 57
參考文獻 58
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