https://scholars.lib.ntu.edu.tw/handle/123456789/631414
標題: | Wicking dynamics into two-rail open channel with periodical branches | 作者: | He, Guan Yu Tsao, Heng Kwong YU-JANE SHENG |
關鍵字: | PAPER-BASED MICROFLUIDICS; YOUNGS EQUATION; CAPILLARY; FABRICATION; IMBIBITION; SURFACES; DEVICES; FLOW | 公開日期: | 1-十月-2022 | 出版社: | AIP Publishing | 卷: | 34 | 期: | 10 | 來源出版物: | Physics of Fluids | 摘要: | Wicking into open channels with branches is frequently adopted in multiple assays for medical testing. The penetration velocity plays a key role in improving efficiency. However, it is significantly reduced in the bifurcation microfluidic systems. As a result, understanding and enhancing wicking dynamics in bifurcation capillary flow is imperative. Capillary imbibition into a two-rail channel with periodical branches is investigated by many-body dissipative particle dynamics. The influences of the branch width and surface wettability on the penetration velocity and imbibition flow rate are examined. Four different types of spontaneous capillary flows are observed, including no invasion into branches, reduction in the penetration velocity, stick-slip motion, and inter-branch gap covered by liquid. Four regimes are identified accordingly, the phase diagram relates the flow behavior to the branch width, and surface wettability is established. As the branch width is significantly large (small gap), the penetration velocity is found to be greater than that without branches. It is attributed to the partial covering behavior, which leads to the effective width more than the main channel width. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/631414 | ISSN: | 10706631 | DOI: | 10.1063/5.0087517 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。