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???org.dspace.app.webui.jsptag.ItemTag.dcfield??? | Value | Language |
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dc.contributor.advisor | 陳俊杉(Chuin-Shan Chen) | |
dc.contributor.author | Cheng-Wei Lin | en |
dc.contributor.author | 林正偉 | zh_TW |
dc.date.accessioned | 2021-05-20T21:39:58Z | - |
dc.date.available | 2010-08-16 | |
dc.date.available | 2021-05-20T21:39:58Z | - |
dc.date.copyright | 2010-08-16 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-08-13 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/10567 | - |
dc.description.abstract | 矽奈米線場效應電晶體作為生物感測器具有高靈敏度、即時偵測、高重現性、無標記檢測和運用現今發展成熟的微機電製程等優點,近年來越來越受到重視。如果能夠說明場效應電晶體的閘極效果,和矽奈米線鍵結分子的行為,將能夠讓我們更了解生物感測器背後的機制。
本研究使用密度泛函理論,以ATK這套軟體計算閘極的影響和鍵結分子的行為,使用三種模型:氫鈍化矽(100)奈米線、氫鈍化矽(100)奈米線施加閘極電壓和氫鈍化矽(100)奈米線鍵結分子,分別分析其傳送頻譜、態密度、傳送比例和特徵態等進行比較。 模擬結果發現氫鈍化矽(100)奈米線做為一完整結構,表現在傳送頻譜上是一階梯狀結構,代表在特定能量點提供的通道可以被電子完全佔滿,特徵態分析是一連續性結構;而氫鈍化矽(100)奈米線施加閘極電壓和氫鈍化矽(100)奈米線鍵結分子,兩者在傳送頻譜上皆表現出係數值的降低,特徵態分析看到中斷的等值面,呈現出閘極電壓和鍵結分子具有等效關係。 | zh_TW |
dc.description.abstract | Silicon nanowire ( SiNW ) field effect transistors ( FET ) are attracting much interest for their high sensitivity, real-time detection, reproducibility, label-free and using micro-electro-mechanical process. It is imperative for us to reveal the gate effect of FET and the behavior of SiNW binding molecules by simulation, which could help us realize the microscopic mechanisms.
The research bases on density functional theory packed in ATK software. Analyse three models: H-passivated Si(100) nanowire, Si(100) nanowire experienced gate voltage effect and Si(100) nanowire binding molecules by transmission spectrum, density of state, transmission percentages and eigenstates individually. Simulation results show that H-passivated Si(100) nanowire as a perfect structure which can be observed by step-wise curve in transmission spectrum. It means that the channels at specific energy can be occupied 100% by electrons, and it is continuous in eigenstate structure; however, in H-passivated Si(100) nanowire with gate voltage effect and H-passivated Si(100) binding R-APTES molecules, both of them display reduction of coefficient in transmission spectrum and discontinuity in eigenstate which show that there exists equivalent relationship between gate voltage effect and binding molecules. | en |
dc.description.provenance | Made available in DSpace on 2021-05-20T21:39:58Z (GMT). No. of bitstreams: 1 ntu-99-R97521601-1.pdf: 3081921 bytes, checksum: c3ce602a71e160396df43d863ab34d09 (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | 口試委員會審定書 #
誌謝 i 中文摘要 ii ABSTRACT iii 目錄 iv 圖目錄 vii 表目錄 xi 第1章 緒論 1 1.1 研究背景 1 1.2 文獻回顧 2 1.2.1 生物感測器基本原理 2 1.2.2 矽奈米線場效應電晶體 5 1.2.3 矽奈米線模擬 6 1.3 研究目的 8 1.4 論文架構 8 第2章 研究方法與理論 9 2.1 量子力學 9 2.2 密度泛函理論 11 2.3 理論計算流程 13 第3章 軟體與參數設定 18 3.1 單位晶胞 18 3.1.1 氫鈍化矽(100)單位晶胞 18 3.1.2 R-APTES 21 3.2 結構最佳化計算 25 3.2.1 氫鈍化矽(100)三單位晶胞結構最佳化 26 3.2.2 R-APTES三單位晶胞結構最佳化 27 3.3 矽奈米線與鍵結R-APTES的模型建置 32 3.3.1 氫鈍化矽(100)奈米線 32 3.3.2 氫鈍化矽(100)奈米線鍵結R-APTES模型 33 3.4 閘極電壓 34 3.5 ATK相關參數設定 35 第4章 模擬結果與討論 36 4.1 矽(100)單位晶胞的能帶結構 37 4.2 傳送頻譜圖分析 38 4.2.1 矽(100)_21312 38 4.2.2 矽(100)_21312施加閘極電壓 40 4.2.3 矽(100)_21312鍵結R-APTES 42 4.3 態密度分析 43 4.3.1 矽(100)_21312 43 4.3.2 矽(100)_21312施加閘極電壓 44 4.3.3 矽(100)_21312鍵結R-APTES 46 4.4 傳送比例分析 47 4.4.1 矽(100)_21312與矽(100)_21312施加閘極電壓 48 4.4.2 矽(100)_21312鍵結R-APTES 52 4.5 特徵態分析 54 4.5.1 矽(100)_21312 54 4.5.2 矽(100)_21312施加閘極電壓 55 4.5.3 矽(100)_21312鍵結R-APTES 58 第5章 結論與建議 61 5.1 結論 61 5.2 建議 62 附錄 63 參考文獻 65 | |
dc.language.iso | zh-TW | |
dc.title | 以原子尺度模擬探討生物分子吸附於矽奈米線的能帶變化與導電機制 | zh_TW |
dc.title | Band structure and conductivity mechanism of bio-molecules binding on silicon nanowire | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 林致廷(Chih-Ting Lin),蔡俊輝 | |
dc.subject.keyword | 生物感測器,場效應電晶體,矽奈米線,鍵結分子,閘極電壓, | zh_TW |
dc.subject.keyword | biosensor,field effect transistor,silicon nanowire,binding molecules,gate voltage, | en |
dc.relation.page | 69 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2010-08-15 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 土木工程學研究所 | zh_TW |
Appears in Collections: | 土木工程學系 |
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