微流體裝置具有高透光性、反應試劑量少、製作成本低且反應時間快速，因此微流體裝置結合光化學反應成為熱門研究。本論文提出一種結合光觸媒和磁性人工纖毛之微流體裝置，微流體裝置採用葉子網眼仿生結構，提供流場均勻及穩定性，使得光觸媒顆粒在腔室內均勻分佈；微流體裝置中的磁性人工纖毛，透過外部磁場驅動人工纖毛轉動，提升擴散效率及降低光觸媒顆粒聚集，加強光觸媒顆粒與汙染物接觸，提升光催化效果。本研究以不同操作模式及不同纖毛分佈模式之光降解效果進行比較，在光降解25分鐘時，纖毛有轉動相較靜止的降解能力提升10.7 %，證明人工纖毛轉動可以有效的提升光降解能力。藉由流場可視化進行一步說明，人工纖毛以圓形分佈，在纖毛轉動時，會發生「二次流」現象。「二次流」可以利於產生渦流，提升混合效率及光催化效果。當纖毛分佈的增加時，可以有效的提升光降解效果，在光降解25分鐘時，降解能力可達到71.2 %。本論文提出的磁性人工纖毛微流體裝置應用於光化學反應，成為可快速檢測及篩選光觸媒的光催化性能之研究平台。

Microfluidic devices have become a popular research area because of their high throughput, less amount of reagents usage, low fabrication costs, and fast reaction time. This study proposes a magnetically actuated artificial cilia microfluidic device platform that can be used to test the effectiveness of novel photocatalytic materials. Moreover, the microfluidic device is also equipped with inlet inspired from leaf areole bionic structure to provide uniformity and stability of the flow field, so that the photocatalyst particles can be evenly distributed in the chamber. The external magnetic field was used to actuate artificial cilia to achieve a photochemical reaction in quick succession through the enhancement of diffusion efficiency. Additionally, the photodegradation effects of different manipulation modes and different cilia distribution patterns were compared. It was observed that in a period of 25 minutes of photodegradation, the device with rotating cilia compared to that with static cilia performs 10.7% higher photodegradation capability. Flow visualization further illustrates that when the artificial cilia exhibit a circular distribution, generates a "secondary flow" that further improves mixing efficiency and photocatalytic activity. When the number of cilia distribution increases, the photodegradation effect can be effectively improved. The degradation capability can reach 71.2% in 25 minutes of photodegradation.

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