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https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/58723
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| 题名: | Electrokinetic flow in an elliptic microchannel covered by ion-penetrable membrane |
| 作者: | Hsu, J. P.;Weng, Y. L.;Lee, D. J.;曾琇瑱;Tseng, Shio-jenn;Su, A.;Chen, C. J. |
| 贡献者: | 淡江大學數學學系 |
| 关键词: | Electrokinetic flow;Elliptic microchannel;Ion-penetrable membrane;Streaming current;Electroosmotic velocity |
| 日期: | 2006-10-01 |
| 上传时间: | 2011-10-01 21:06:04 (UTC+8) |
| 摘要: | The electrokinetic flow of an electrolyte solution in an elliptical microchannel covered by an ion-penetrable, charged membrane layer is examined theoretically. The present analysis extends previous results in that a two-dimensional problem is considered, and the system under consideration simulates the flow of a fluid, for example, in a microchannel of biological nature such as vein. The electroosmostic volumetric flow rate, the total electric current, the streaming potential, and the electroviscous effect of the system under consideration are evaluated. We show that, for a constant hydraulic diameter, the variations of these quantities as a function of the aspect ratio of a microchannel may have a local minimum or a local maximum at a medium level of ionic strength, which depends on the thickness of the membrane layer. For a constant cross-sectional area, the electroosmostic volumetric flow rate, the total electric current, and the streaming potential increase monotonically with the increase in the aspect ratio, but the reverse is true for the electroviscous effect. |
| 關聯: | Colloids and Surfaces B: Biointerfaces 53(2), pp.127-138 |
| DOI: | 10.1016/j.colsurfb.2006.08.012 |
| 显示于类别: | [數學學系暨研究所] 期刊論文
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