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系統識別號 U0026-1401201819270200
論文名稱(中文) 探討在表面聲波駐波微流體中側壁效應對駐波節點/反節點影響
論文名稱(英文) Investigation of sidewall effect on pressure nodes/pressure anti-nodes in standing surface acoustic wave microfluidics
校院名稱 成功大學
系所名稱(中) 化學工程學系
系所名稱(英) Department of Chemical Engineering
學年度 105
學期 2
出版年 106
研究生(中文) 洪立杰
研究生(英文) Li-Jie Hong
學號 N36044440
學位類別 碩士
語文別 中文
論文頁數 89頁
口試委員 指導教授-莊怡哲
口試委員-王孟菊
口試委員-謝之真
中文關鍵字 表面聲波  側壁效應(sidewall effect)  鈮酸鋰  微流體 
英文關鍵字 standing surface acoustic wave  sidewall effect  lithium niobate  microfluidics 
學科別分類
中文摘要 對微奈米粒子進行排列或分離的技術,已廣泛運用於化學加工、食品檢測、生醫工程等領域來進行分析,相對於傳統方式因有儀器設備昂貴、分析時間冗長、分離步驟繁雜等問題,聲輻射力則具備根據粒子的大小、密度、壓縮比等性質來進行區分的特性,不需預先在粒子上做任何處理,因此可廣泛使用在任何粒子上,而利用SSAW裝置可控制粒子到達壓力節點或反壓節點,以達到粒子分離及聚焦的效果。
  當使用PDMS流道時,會產生所謂的側壁效應(sidewall effect),亦即流道側壁會形成節點,致使粒子除了聚焦於已預訂的節點位置外,也會聚焦於側壁,造成無法形成單一聚焦。本研究探討使用不同流道寬度及流體下,側壁效應對粒子聚焦位置的影響。
英文摘要 In this study, we investigated how the sidewall effect influences the location of pressure nodes or pressure anti-nodes in standing surface acoustic wave(SSAW) microfluidics. Both the medium and channel width were varied. It is found that the sidewall effect affects the distribution of nodes and anti-nodes so that they deviate from the positions which are computed by the 1-D model. Meanwhile, the distribution of nodes (or anti-nodes) is not uniform and equidistant.
The particles in DI water tend to be focused on nodes at the boundary of the microchannel instead of focusing on theoretical nodes which are close to the sidewalls. In glycerol-water solution with ratio 7:1, the anti-nodes (particles position) will be affected by the sidewall effect, and pushed to the middle of the flow channel.
論文目次 中文摘要 I
Extended Abstract II
誌謝 VII
目錄 VIII
表目錄 XI
圖目錄 XIII
第一章 緒論 1
1.1 前言 1
1.2 研究動機與方法 2
第二章 文獻回顧 3
2.1 表面聲波 3
2.1.1 表面聲波的源起 3
2.1.2 壓電材料 4
2.1.3 表面駐波聚焦原理 8
2.1.4 表面駐波聚焦的應用 15
2.2 粒子分離技術 22
2.3 聲輻射力聚焦模型分析 30
2.3.1 1D簡諧共振駐波模型 30
2.3.2 2D表面聲波駐波微流體模型 31
2.3.3 側壁效應 34
第三章 實驗材料與方法 39
3.1 實驗藥品與材料 39
3.2 實驗儀器 42
3.3 表面聲波元件之製作 51
3.3.1 指叉狀電極的製作 51
3.3.2 PDMS微流道的製作 56
3.3.3 表面聲波元件的製作 60
3.3.4 表面駐波聚焦測試 62
第四章 結果與討論 63
4.1 SSAW聚焦參數 63
4.2 SSAW聚焦節點位於流道中央位置 64
4.2.1 介質為去離子水 65
4.2.2 介質為甘油:去離子水=7:1 69
4.3 SSAW聚焦反節點位於流道中央 75
4.3.1介質為去離子水 75
4.3.2介質為甘油:去離子水=7:1 80
第五章 結論 85
第六章 未來工作與建議 86
第七章 參考文獻 87
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