Transient currents in electrolyte displacement by asymmetric electro-osmosis and determination of surface zeta potentials of composite microchannels

Ang Tsung Kuo, Chien Hsiang Chang, Hsien Hung Wei

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

In this article, we demonstrate the determination of surface zeta potentials of composite microchannels using the electric-field-driven solution displacement method. Nonuniform surface charge creates linear electro-osmotic flow, which leads to asymmetric displacement. Simplified circuit models are derived to determine the surface zeta potentials through examining the behavior of transient currents during the displacement. The effects of dispersion on the measured zeta potentials are discussed in line with the flow characteristics under different surface charge conditions.

原文English
文章編號244102
期刊Applied Physics Letters
92
發行號24
DOIs
出版狀態Published - 2008

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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