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Electro-Osmotic Flow With Free Surface in Nanochannels

[+] Author Affiliations
Sang W. Joo

Yeungnam University, Gyongsan, South Korea

Shizhi Qian, Yingtao Jiang, Marcos A. Cheney

University of Nevada at Las Vegas, Las Vegas, NV

Paper No. MicroNano2008-70302, pp. 543-547; 5 pages
  • 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems
  • 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems
  • Clear Water Bay, Kowloon, Hong Kong, June 3–5, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4294-0 | eISBN: 0-7918-3819-6
  • Copyright © 2008 by ASME


A thin-film flow induced by the electro-osmosis is studied. In contrast to the single-phase electro-osmosis flow through micro- and nanochannels, the flow considered has a free surface, which may deform with the flow developments. A new type of interfacial instability is identified via a linear stability analysis, and subsequent nonlinear flow behavior, including that for the film surface corrugations, is examined by deriving an evolution equation.

Copyright © 2008 by ASME
Topics: Electroosmosis



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