An experimental study of electro-osmotic flow in rectangular microchannels

Reza Sadr, M. Yoda, Z. Zheng, A. T. Conlisk

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

Experimental studies were carried out on fully developed and steady electro-osmotic flow in a rectangular channel where the channel height h is comparable to its width and the thickness of the electric double layer characterized by the Debye length is much less than h. The nano-particle image velocimetry technique was used to measure the two components of the velocity field parallel to and within about 100nm of the channel wall for h ≤ 25 μm. The mobility of the particle tracers was calculated from averaged velocity data for various electric field strengths. The experimentally determined mobility values are compared with analytical predictions for dilute aqueous solutions of sodium tetraborate.

Original languageEnglish
Pages (from-to)357-367
Number of pages11
JournalJournal of Fluid Mechanics
Issue number506
DOIs
Publication statusPublished - 10 May 2004
Externally publishedYes

Fingerprint

microchannels
Microchannels
Sodium borate
Velocity measurement
Debye length
Electric fields
electric field strength
particle image velocimetry
tracers
velocity distribution
sodium
aqueous solutions
predictions

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

An experimental study of electro-osmotic flow in rectangular microchannels. / Sadr, Reza; Yoda, M.; Zheng, Z.; Conlisk, A. T.

In: Journal of Fluid Mechanics, No. 506, 10.05.2004, p. 357-367.

Research output: Contribution to journalArticle

Sadr, Reza ; Yoda, M. ; Zheng, Z. ; Conlisk, A. T. / An experimental study of electro-osmotic flow in rectangular microchannels. In: Journal of Fluid Mechanics. 2004 ; No. 506. pp. 357-367.
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