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    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/49902


    題名: Size-dependent electro-osmosis in a microchannel with low-permittivity, salt-free media
    作者: Chang,FM;Chang,YW;Sheng,YJ;Tsao,HK
    貢獻者: 化學工程與材料工程學系
    關鍵詞: CAPILLARY-ELECTROPHORESIS
    日期: 2010
    上傳時間: 2012-03-27 16:26:00 (UTC+8)
    出版者: 國立中央大學
    摘要: Electro-osmosis is the preferred transport mechanism in microfluidic systems. The electro-osmotic mobility in an aqueous solution is essentially independent of the microchannel size. However, in low-permittivity solvents, the screening effect is absent and the mobility is found to grow with the capillary radius according to our analytical theory and electro-osmotic flow experiments. Our results show that regardless of low surface charge density, electro-osmosis always occurs for long enough microchannels. Therefore, electro-osmosis provides a method for determining extremely low surface charge density associated with low-permittivity media. The implication in the response time of electronic paper is given as well. (C) 2010 American Institute of Physics. [doi:10.1063/1.3502601]
    關聯: APPLIED PHYSICS LETTERS
    顯示於類別:[化學工程與材料工程學系 ] 期刊論文

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