Reversed flow at low frequencies in a microfabricated AC electrokinetic pump

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dc.creatorGregersen, Misha Marie
dc.creatorOlesen, Laurits H.
dc.creatorBrask, Anders
dc.creatorHansen, Mikkel Fougt
dc.creatorBruus, Henrik
dc.date2007-04-10
dc.date.accessioned2026-07-07T12:30:48Z
dc.date.available2026-07-07T12:30:48Z
dc.descriptionMicrofluidic chips have been fabricated to study electrokinetic pumping generated by a low voltage AC signal applied to an asymmetric electrode array. A measurement procedure has been established and followed carefully resulting in a high degree of reproducibility of the measurements. Depending on the ionic concentration as well as the amplitude of the applied voltage, the observed direction of the DC flow component is either forward or reverse. The impedance spectrum has been thoroughly measured and analyzed in terms of an equivalent circuit diagram. Our observations agree qualitatively, but not quantitatively, with theoretical models published in the literature.
dc.descriptionRevTex, 9 pages, 6 eps figures
dc.identifierhttps://arxiv.org/abs/0704.1321
dc.identifierhttp://arxiv.org/abs/0704.1321
dc.identifierPHYSICAL REVIEW E 76, 056305 (2007)
dc.identifierdoi:10.1103/PhysRevE.76.056305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216247
dc.subjectFluid Dynamics
dc.titleReversed flow at low frequencies in a microfabricated AC electrokinetic pump
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