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研究生:高銥岑
研究生(外文):Yi-Tsen Kao
論文名稱:量子點的生醫感測與溫度檢測應用
論文名稱(外文):The Applications of Biosensor and Thermometer in Quantum Dot Systems
指導教授:郭明庭
指導教授(外文):M.-T. Kuo
學位類別:碩士
校院名稱:國立中央大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:65
中文關鍵詞:量子點 生醫感測
外文關鍵詞:quantum dot biosensor
相關次數:
  • 被引用被引用:0
  • 點閱點閱:257
  • 評分評分:
  • 下載下載:27
  • 收藏至我的研究室書目清單書目收藏:0
在本論文中,我們藉由Anderdson model及凯帝旭格林函數的技巧來探討單電子電晶體的微分電導譜線特性,希望能將單電子電晶體應用在生醫感測與溫度檢測的領域。在生醫感測的部分,利用金屬奈米粒子包覆量子點殼層的奈米結構,觀察平行耦合量子點的微分電導譜線。我們會發現金屬奈米粒子造成的電子-電漿子交互作用(EPIs)會修正量子點能階、量子點內(間)庫倫交互作用力、電子跳躍強度以及穿隧率,同時也會在微分電導譜線看到電漿子輔助穿隧的機制。在溫度檢測的部分,我們與過去的文獻做比較,利用一般的單量子點奈米結構,探討微分電導譜線與溫度的關係,觀察量子點內庫倫交互作用力、穿隧率以及電位勢造成的量子點能階偏移對微分電導譜線半高寬與溫度的比值有何影響,看是否能如同文獻將微分電導譜線應用於溫度檢測。
In this thesis we have theoretically studied the transport properties of a metal core/semiconductor shell quantum dot molecule (QDM) embedded in a matrix connected to metallic electrodes in the framework of Keldysh Green function technique. The effects of the electron plasmon interactions (EPIs) on the tunneling current spectra of QDM are examined. The energy levels of the QDs, intradot and interdot Coulomb interactions, electron interdot hopping strengths, and tunneling rates of QDs are renormalized by the EPIs. The differential conductance spectra show peaks arising from the plasmon assisted tunneling process, intradot and interdot Coulomb interactions, and coherent tunneling between the QDs. We also discussed the application of QD thermometer. We found that the differential conductance of tunneling current is highly sensitive to physical parameters. Such a feature indicates that the measurement of differential conductance may not a good tool to design nanothermometer. Instead of differential conductance, we propose that Seebeck coefficient has the promising potential to design QD thermometer.
第一章 導論 1
1-1量子點的簡介與應用 1
1-2研究動機 3
第二章 金屬奈米粒子包覆量子點殼層之量子元件系統模型4
2-1 理論模型 4
2-2 EPIs對穿隧電流之影響 8
2-3金屬奈米粒子的簡介 13
2-3-1 金屬奈米粒子之應用 15
2-2-3 奈米粒子包覆半導體量子點之特性 16
第三章 平行量子點系統的電漿效應 19
3-1 不考慮EPIs的穿隧電流譜線分析 21
3-2 EPIs對穿隧電流譜線之影響 28
3-3 有限電子跳躍強度下對EPIs電流譜線之影響 34
第四章 量子點的溫度檢測應用 38
4-1量子點內庫倫交互作用力對微分電導譜線的影響 40
4-2左右電極穿隧率對微分電導譜線的影響 43
4-3電位勢差對量子點的能階偏移 45
第五章 結論 48
參考文獻 50

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