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系統識別號 U0002-2508201514104300
中文論文名稱 新型渦流捕捉顆粒晶片之設計
英文論文名稱 Design of New Vortex-based Flow Chips to Capture Particles
校院名稱 淡江大學
系所名稱(中) 機械與機電工程學系碩士班
系所名稱(英) Department of Mechanical and Electro-Mechanical Engineering
學年度 103
學期 2
出版年 104
研究生中文姓名 林彥祺
研究生英文姓名 Yen-Chi,Lin
電子信箱 tom80052000@hotmail.com
學號 602370511
學位類別 碩士
語文別 中文
口試日期 2015-07-10
論文頁數 78頁
口試委員 指導教授-楊龍杰
委員-鍾永強
委員-韓謝忱
中文關鍵字 生物晶片  蜻蜓翼  渦旋  微流道 
英文關鍵字 Biochips  Dragonfly wing  Vortex  Microfluidic 
學科別分類 學科別應用科學機械工程
中文摘要 本文主要在設計新型的捕捉顆粒生物晶片,先透過COMSOL軟體進行計算流體力學的模擬,了解於此設計中會產生之速度流場以及顆粒的運動狀態。此生物晶片將蜻蜓翼與微流道結合在一起,利用蜻蜓翼在流動時會於翅膀皺摺凹陷處產生渦旋之特性,擬於微流道內產生低雷諾數渦旋,進行微顆粒之捕捉。
本文著重於仿蜻蜓翼生物晶片的設計與三維粒子流動模擬,希望得到較好的顆粒抓取效果。經重複嘗試,對於寬度200μm的微流道,蜻蜓翼連續壁弦長806μm,連續壁厚度61μm,入口流速0.52 m/s可產生明顯的蜻蜓翼渦流;入流口賦予50。的入流傾角,可增強微流道之起始渦度,有利顆粒捕捉(50顆約可捕捉2顆;捕捉率4%),本文也嘗試階梯式兩只蜻蜓翼串接的流場模擬,適當橫向增胖蜻蜓翼尺寸一倍,捕獲率可達6%;對於未來進一步擴充為陣列式顆粒捕捉器具有應用參考價值。
英文摘要 This work presents the design of a new flow chip to capture particles. A dragonfly wing blocks along the centerline of a microchannel to generate multiple vortex in the corrugated grooves streamwisely. These multiple vortex in the dragonfly wing are used to capture more particles. Different from the conventional vortex-based flow chips with rectangular grooves along the both sides channel wall, the dragonfly wing grooves here in is designed to capture central -part particles novelly. The chord length of the dragonfly wing is 806 μm and thickness ratio is 7.5 %. Through the CFD simulation result (by COMSOL or FEMLAB), the inlet velocity of 0.52m/s can induce obvious vortex pattern in the corrugated dragonfly wing inserted in a microchannel of 200μm wide. The inclined angle of 50。at the channel entrance can provide enough initial vorticity strength beneficial to the particle capture rate of 4% per dragonfly wing structure.
This work also tried two dragonfly structure cascadedly connected together. When the thickness ratio of the dragonfly wing double, the cascaded two-wing case can increase the capture ratio up to 6%. These simulation message reveals the usefulness of increasing the particle capture ratio of flow array design. It’s also good for the integration and application in tumor cell capture, sorting and separation in the future.
論文目次 目錄
第一章 緒論 1
1-1前言 1
1-1-1 微機電系統 1
1-1-2循環腫瘤細胞(CTCs cell) 2
1-2文獻回顧 5
1-2-1流體慣性力 5
1-2-2微流體顆粒運動 8
1-2-3於微流道中進行顆粒或細胞分離 9
1-2-4 蜻蜓翼研討 11
1-3研究動機與目的 13
第二章 仿蜻蜓翼生物晶片設計與流場模擬 17
2-1 計算流體力學-COMSOL Multiphysics 17
2-2模組功能介紹與建立 18
2-3仿蜻蜓翼生物晶片之參數設定二維與三維模擬 20
2-4流場速度探討 30
2-5入流角度與流場關係 35
2-6抓取率提升-陣列式設計 43
第三章 微流道製程 48
3-1光罩設計與製造 48
3-2 基本製程技術 49
3-2-1 晶片清潔 49
3-2-2微影製程 51
第四章 結論與未來展望 58
4-1粒子追蹤結論 58
4-2 未來展望 60
參考文獻 62
附錄A COMSOL 軟體使用設定 68
附錄B 蜻蜓翼之座標資訊 73
附錄C 補充之速度及粒子追蹤圖 74


圖目錄
圖1 - 1於彎曲流道中生成渦流 6
圖1 - 2 壓力梯度 7
圖1 - 3顆粒受慣性力影響之時間-位置 7
圖1 - 4平衡位置與顆粒直徑關係 9
圖1 - 5細胞抓取裝置 10
圖1 - 6蜻蜓翼流場模擬 13
圖1 - 7全文架構 16
圖2 - 1計算流體力學COMSOL模組分類 19
圖2 - 2流體粒子交互作用 19
圖2 - 3流場粒子追蹤設定 21
圖2 - 4阻力區域選取 21
圖2 - 5耦合條件選取 22
圖2 - 6文獻裝置模擬結果-流場速度場 22
圖2 - 7文獻裝置模擬結果-粒子軌跡圖(2.5ms) 23
圖2 - 8文獻裝置模擬結果-粒子軌跡圖(5ms) 24
圖2 - 9文獻裝置模擬結果-粒子軌跡圖(7.5ms) 24
圖2 - 10文獻裝置模擬結果-粒子軌跡圖(10ms) 25
圖2 - 11三維計算模擬-速度場 25
圖2 - 12三維計算模擬-粒子軌跡圖 26
圖2 - 13繪製仿蜻蜓翼生物晶片平面圖 27
圖2 - 14內部壁的建立 27
圖2 - 15壁條件-反彈 28
圖2 - 16仿蜻蜓翼二維流場 28
圖2 - 17仿蜻蜓翼二維粒子軌跡圖 29
圖2 - 18仿蜻蜓翼三維流場 29
圖2 - 19仿蜻蜓翼三維粒子軌跡圖 29
圖2 - 20速度場-流道寬度120μm 31
圖2 - 21速度場-流道寬度160μm 31
圖2 - 22速度場-流道寬度200μm 32
圖2 - 23速度0.06m/s-速度場 33
圖2 - 24速度0.1m/s-速度場 34
圖2 - 25速度0.15m/s-速度場 34
圖2 - 26速度0.2m/s-速度場 34
圖2 - 27入流角度=30。 36
圖2 - 28入流角度=45。 36
圖2 - 29入流角度=50。 36
圖2 - 30入流角度=60。 37
圖2 - 31連續壁前挪,入流角度50。 38
圖2 - 32連續壁前挪,入流角度60。 38
圖2 - 33蜻蜓翼Y軸比例調整至2倍 39
圖2 - 34最初設定之蜻蜓翼尖端與流道壁距離 39
圖2 - 35縱向放大兩倍軸向不變-速度場 40
圖2 - 36粒子追蹤-入流角度50。 41
圖2 - 37粒子追蹤-入流角度60。 41
圖2 - 38增胖型蜻蜓翼(入流角50。)-速度場 42
圖2 - 39增胖型蜻蜓翼(入流角60。)-速度場 42
圖2 - 40 矩形抓取裝置串接 44
圖2 - 41 頭尾相連串接 45
圖2 - 42 聯接通道串接 46
圖2 - 43 階梯式串接 46
圖2 - 44軸向放大兩倍,入流角50。 47
圖2 - 45階梯式串接-軸向放大兩倍 47
圖3 - 1光罩設計圖 48
圖3 - 2正負光阻 51
圖3 - 3光阻塗佈機 53
圖3 - 4紅外線對準雙面曝光機 54
圖 3 - 5微流道微影製作 56
圖 3 - 6微流道OM圖 56
圖 3 - 7 實驗製程流程 57
圖 A - 1模型選擇 68
圖 A - 2選擇空間維度 69
圖 A - 3研究選擇-雙向耦合粒子追蹤 70
圖 A - 4幾何模型建立 71
圖 A - 5網格建立 71
圖 A - 6研究時間設定 72
圖 B - 1蜻蜓翼各點標號 73
圖 C - 1粒子軌跡-流道寬度120μm 74
圖 C - 2粒子軌跡-流道寬度160μm 74
圖 C - 3粒子軌跡-流道寬度200μm 75
圖 C - 4入流角度=30。 75
圖 C - 5入流角度=45。 76
圖 C - 6連續壁前挪,入流角度50。 76
圖 C - 7連續壁前挪,入流角度60。 77
圖 C - 8增胖型蜻蜓翼-入流角50。 77
圖 C - 9增胖型蜻蜓翼-入流角60。 78

表目錄
表2 - 1流道寬度與雷諾數及速度差異 32
表4 - 1速度與渦旋生成關係 59
表4 - 2入流角度與渦旋生成關係 59
表4 - 3不同之設計與抓取率 60
表B-1 蜻蜓翼各點相對座標 73

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