臺灣博碩士論文加值系統

介電濕潤（EWOD）是一種透過在電極上施加電壓來改變介電層上疏水表面濕潤性的現象。當電壓施加到電極時，產生的電場會改變液滴在電極表面的接觸角，從而改變液滴的形狀和位置。這種方法可以在沒有傳統流道的情況下控制液體，具有製造過程簡單和成本低廉的優勢。
在微流體操控的研究中，通常採用雙板結構的介電濕潤模型。這種模型包括上下兩塊板，中間夾有液滴和空氣，透過電場作用來控制液滴的運動和形態。單板結構僅在一個平面上布置電極和介電層，儘管結構簡化，但控制液滴的難度較大，因此目前的研究主要集中在雙板結構上。
本文為雙版介電濕潤，探討了不同頻率下與不同導電度液體的液體傳輸。
為使液體成功移動和避免體積影響數據，實驗中使用固定1.5mm直徑之液珠，液體種類分別為去離子水(DI water)與導電度分別1.5x10-3的氯化鈉水溶液、導電度分別為1.5x10-3的氯化鉀水溶液。
在實驗最後的結果，我們成功在不同頻率完成液體傳輸，並且得到在頻率越低，導電度越高的液體傳輸速度越快的結論。

Electrowetting on Dielectric (EWOD) is a phenomenon in which applying voltage to an electrode changes the wettability of a hydrophobic surface on a dielectric layer. When voltage is applied to the electrode, the resulting electric field alters the contact angle of droplets on the electrode surface, thereby changing the shape and position of the droplets. This method allows for fluid control without the need for traditional channels, offering advantages such as a simple manufacturing process and low cost.
In the study of microfluidic manipulation, a dual-plate EWOD model is commonly used. This model consists of two plates with a droplet and air sandwiched in between, with the movement and shape of the droplet being controlled by the electric field. The single-plate configuration, where electrodes and the dielectric layer are arranged on a single plane, is less common. Although the structure is simplified, controlling the droplets is more challenging, which is why current research mainly focuses on the dual-plate configuration.
This study explores dual-plate EWOD, investigating the transport of different conductivity liquids under various frequencies. To ensure successful liquid movement and to avoid volume effects on the data, droplets with a fixed diameter of 1.5 mm were used in the experiments. The types of liquids used were deionized water (DI water), sodium chloride solution with a conductivity of 1.5x10-3 S/m, and potassium chloride solution with a conductivity of 1.5x10-3S/m.
The experimental results successfully demonstrated liquid transport at different frequencies. The conclusion was that the lower the frequency, the faster the transport speed of the liquid with higher conductivity.

摘要
ABSTRACT
目錄
表目錄
圖目錄
第一章 緒論
1-1研究背景與動機
1-2研究之重要性與目的
2-2介電濕潤
2-2雙板結構
2-3表面張力
2-4導電度
2-5液體介電泳
第三章 研究方法
3-1研究架構
3-2原理推導
3-3液體選擇
3-4樣品制備與實驗流程
3-5實驗儀器
3-6電極圖形
3-7實驗設置
第四章 實驗結果
4-1雙板介電濕潤驅動
4-2實驗結果分析-作用力
4-3實驗結果分析-瞬態結果
第五章 結論
第六章 未來展望
第七章 文獻回顧

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[10]https://en.wikipedia.org/wiki/Surface_tension
[11]https://zh.wikipedia.org/wiki/electrical_conductiviy
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