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研究生:黃彥翔
研究生(外文):Yen-Hsiang Huang
論文名稱:DNA分子在漸縮微渠道中流動的拉伸及動態特性
論文名稱(外文):Stretching and Immobilization Characteristics of DNA Molecules in a Convergent Micro-channel Flow
指導教授:林振德林振德引用關係
指導教授(外文):Jenn-Der Lin
學位類別:碩士
校院名稱:國立交通大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2003
畢業學年度:91
語文別:中文
論文頁數:56
中文關鍵詞:拉伸漸縮渠道伸長流可視化應力鬆弛現象
外文關鍵詞:Stretchingconvergent channelelongational flowDNA visualizationstress relaxation phenomena
相關次數:
  • 被引用被引用:0
  • 點閱點閱:147
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  • 下載下載:24
  • 收藏至我的研究室書目清單書目收藏:1
本論文探討DNA分子於流動中之拉伸及動態特性,在實驗設計中,我們使用漸縮渠道,渠道包含儲液槽、漸縮段及直管,當流體經過漸縮段時,藉由截面積的變化而在渠道中心產生伸長流(Elongational flows),研究中我們利用半導體製程技術製作實驗所須使用的渠道,並利用倒立式螢光顯微鏡及影像拍攝器,建立DNA分子的可視化技術,藉由改變DNA溶液的流量、黏滯係數進行實際觀測與分析DNA分子在伸長流下分子拉伸形態的改變及應力鬆弛現象,最後,結合前述的實驗結果,探討流動作用於DNA分子上的拉伸力。探討此物理特性,應可改善以DNA為主的微液生物晶片之生化反應效率,亦有助於了解DNA分子在流動下形態的穩定性及檢測的準確性。

This research purposes to investigate the stretching and immobilization behaviors of the lambda-DNA molecules during flow through a channel. After considering existing design, a convergent channel is adopted. The flow path consisted of an inlet reservoir, convergent channel and straight channel. Because of the variation of cross section, the flow experienced an elongational flow at the convergent channel along the channel centerline. We utilize semiconductor fabrication process to manufacture the micro-channel for experiment. Besides, we also build up the DNA visualization technology with fluorescent dye. The epifluorescence microscopy and image intensifier CCD camera was used. We observe the stretching and stress relaxation phenomena in the elongational flow at various values of flow rate and viscosity of DNA solution. We also calculate the stretching force acting on the DNA molecules by flow. It is important to understand these physical characteristics for improving the efficiency of biochemical reaction in micro fluidic devices. This analysis is also instrumental for understanding the stability of DNA molecules and for ensuring accuracy of DNA sample detection in fluid flows.

中文摘要 ………………………………………………………… i
英文摘要 ………………………………………………………… ii
致謝 ……………………………………………………….. iii
目錄 ………………………………………………………… iv
表目錄 ………………………………………………………… vi
圖目錄 ………………………………………………………… vii
符號表 ………………………………………………………… x
第一章 緒論…………………………………………………… 1
1.1 前言…………………………………………………… 1
1.2 研究背景……………………………………………… 2
1.3 研究目的……………………………………………… 4
第二章 實驗原理及設計……………………………………… 6
2.1 渠道之設計…………………………………………… 7
2.2 DNA分子的應力鬆弛時間…………………………… 11
2.3 微流道製程…………………………………………… 12
第三章 實驗方法……………………………………………… 15
3.1 觀測系統……………………………………………… 15
3.2 溶液樣品配置………………………………………… 16
3.3 實驗步驟說明………………………………………… 17
第四章 結果與討論…………………………………………… 19
4.1 DNA可視化及動態特性之討論……………………… 19
4.2 DNA分子的拉伸及應力鬆弛時間之探討…………… 22
4.3 作用於DNA分子的流動拉伸力之探討……………… 27
第五章 結論…………………………………………………… 31
參考文獻 ………………………………………………………… 32
表 …………………………………………………………… 34
圖 …………………………………………………………… 37

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