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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/52893完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 郭茂坤 | |
| dc.contributor.author | Hsin-Yu Wu | en |
| dc.contributor.author | 巫信佑 | zh_TW |
| dc.date.accessioned | 2021-06-15T16:32:43Z | - |
| dc.date.available | 2015-08-16 | |
| dc.date.copyright | 2015-08-16 | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2015-08-13 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/52893 | - |
| dc.description.abstract | 本文研究銀島與銀球相互作用的金屬螢光增益，銀島與銀球結構的表面電漿子耦合使間隙區域的|E|提升。我們使用多重中心展開法(MMP)來分析位於間隙區域之螢光分子的螢光增益，其中銀島為為一扁橢球。本研究選擇螢光分子TRITC 和Texas red來做計算，定量分析具有不同的間隙、平面波的入射角度、銀島與銀球尺寸形狀的金屬螢光效應。
數值分析結果指出，混和奈米結構的間隙耦合使得金屬螢光增益的增強因子較單一銀島佳，間隙愈小增強因子愈強，並且發現與先前實驗結果一致，除此之外，發現縮短銀島與銀球的間隙可以提高金屬螢光增益；表面電漿子共振波長能帶會隨著銀島變扁或尺寸變大而紅位移或能帶變寬，此性質使我們可以為了特定的螢光分子選定銀島的尺寸，以便得到最大的激發率；最後，發現銀球會受到誘導光力而靠近銀島，使銀島與銀球之間隙減小而增強金屬螢光增益效應。 | zh_TW |
| dc.description.abstract | The metal enhanced fluorescence (MEF) of a silver island (SI) associated with a silver nanoparticle (SNP) was studied in this thesis. The coupling plasmonic effect of the hybrid nanostructure can enhance the near field within the gap zone. We use the multiple multipole method to analyze the plasmon-mediated enhancement factor on the fluorescence of a molecule located in the gap zone, where the SI is modelled as an oblate spheroid. The fluorescent molecules used for simulation in this study are TRITC and Texas red. We quantitatively analyzed the MEF effects with different gaps, the incident angles of plane wave, and the sizes and shapes of SI and SNP.
Numerical results show that the enhancement factor of the hybrid nanostructure on MEF is higher than that of a SI alone due to the coupled gap mode; the smaller the gap the larger the enhancement factor. This finding is in agreement with the previous experimental results. In addition, reducing the distance between molecule and SNP can also raise MEF. The surface plasmon resonance (SPR) band of the SI is red-shifted and broadened by being flattened or enlarged. This property allows us to tailor the shape of SI for obtaining the maximum excitation rate on a specific molecule. Moreover, we found that the induced optical force allows SNP be attracted by SI to reduce the gap gradually for performing a stronger MEF effect | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T16:32:43Z (GMT). No. of bitstreams: 1 ntu-104-R02543054-1.pdf: 5115457 bytes, checksum: 8dcdb185d08bfb72742cc3dc31d85cfd (MD5) Previous issue date: 2015 | en |
| dc.description.tableofcontents | 口試委員審定書 i
誌謝 ii 摘要 iii ABSTRACT iv 目錄 v 表目錄 vii 圖目錄 ix 第1章 緒論 1 1.1 前言 1 1.2 文獻回顧 2 1.3 本文內容 3 第2章 電磁理論 5 2.1 Maxwell方程式與邊界條件[32] 5 2.2 Helmholtz方程式[37] 7 2.3 球向量波函數[37] 8 2.4 平面波與電偶極之電場與磁場 10 2.5 Maxwell應力張量相關電磁問題 12 第3章 多重中心展開法(MMP)及螢光效應相關理論 15 3.1 多重中心展開法(MMP) 15 3.1.1 多重中心展開法計算空間中任意點之電磁場 16 3.1.2 奇異值拆解法求解MMP電磁場之待定係數 18 3.2 吸收截面積(ACS)效率、散射截面積(SCS)效率、消散截面積(ECS)效率與激發率 21 3.3 輻射功率、非輻射功率與量子效率 23 3.4 金屬螢光增益(MEF)與Stokes位移現象 24 第4章 數值結果與分析討論 28 4.1 螢光分子位置與振盪方向對激發率之影響 30 4.2 銀球與銀島間距對螢光增益之影響 35 4.3 波傳方向對螢光增益之影響 46 4.4 銀島幾何形狀對螢光增益之影響 58 4.5 銀球幾何形狀對螢光增益之影響 66 4.6 銀球所受之光力 74 第5章 研究總結與未來展望 77 5.1 研究結論 77 5.2 未來展望 78 附錄 展開中心擺放位置與波長之關係 79 參考文獻 91 | |
| dc.language.iso | zh-TW | |
| dc.subject | 量子效率 | zh_TW |
| dc.subject | 增強因子 | zh_TW |
| dc.subject | 光力 | zh_TW |
| dc.subject | 激發率 | zh_TW |
| dc.subject | 多重中心展開法 | zh_TW |
| dc.subject | 銀球 | zh_TW |
| dc.subject | 銀島 | zh_TW |
| dc.subject | 金屬螢光增益 | zh_TW |
| dc.subject | 表面電漿子共振 | zh_TW |
| dc.subject | excitation rate | en |
| dc.subject | silver island | en |
| dc.subject | silver nanoparticle | en |
| dc.subject | multiple multipole (MMP) method | en |
| dc.subject | surface plasmon resonance (SPR) | en |
| dc.subject | gap | en |
| dc.subject | metal enhancement fluorescence(MEF) | en |
| dc.subject | quantum yield | en |
| dc.subject | enhancement factor | en |
| dc.subject | optical force | en |
| dc.title | 銀奈米粒子與銀島之近場耦合對金屬增強螢光效益之影響 | zh_TW |
| dc.title | Near-field coupling of silver nanoparticle and silver island on metal-enhanced fluorescence | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 103-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.coadvisor | 廖駿偉 | |
| dc.contributor.oralexamcommittee | 鄧崇任 | |
| dc.subject.keyword | 金屬螢光增益,銀島,銀球,多重中心展開法,表面電漿子共振,激發率,量子效率,增強因子,光力, | zh_TW |
| dc.subject.keyword | metal enhancement fluorescence(MEF),silver island,silver nanoparticle,multiple multipole (MMP) method,surface plasmon resonance (SPR),gap,excitation rate,quantum yield,enhancement factor,optical force, | en |
| dc.relation.page | 92 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2015-08-13 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 應用力學研究所 | zh_TW |
| 顯示於系所單位： | 應用力學研究所 | |
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