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An integrated AC electrokinetic pump in a microfluidic loop for fast and tunable flow control
Abstract
We have built a dedicated lab on a chip to study the performance of an integrated electrokinetic micropump, driven by a low voltage AC signal. This micropump consists of an array of interdigitated electrodes and is here integrated in a microfluidic loop. We demonstrate that this device can pump continuously and reproducibly electrolyte solutions of low to moderate ionic strength. The pumping speed reaches up to 500 [micro sign]m s(-1) in 20 [micro sign]m deep and 100 [micro sign]m wide channels with a driving signal in the 1-10 kHz range and an amplitude of only a few volts. In addition, we have observed an interesting reversal of the pumping direction at higher frequencies (50-100 kHz). Our device permits a systematic and automated exploration of the influence of the ionic strength thanks to an integrated micromixer.
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Cites
Particle-Imaging Techniques for Experimental Fluid Mechanics
Adrian, R. J. (1991) · Annual Review of Fluid Mechanics · doi:10.1146/annurev.fl.23.010191.001401 · Cited by 3,405
Cited by
Integrated optofluidics: A new river of light
Monat, C., Domachuk, P., & Eggleton, B. J. (2007) · Nature Photonics · doi:10.1038/nphoton.2006.96 · Cited by 955
Bazant, M. Z., Kilic, M. S., Storey, B. D., & Ajdari, A. (2009) · Advances in Colloid and Interface Science · doi:10.1016/j.cis.2009.10.001 · Cited by 916
Self-citationInduced-charge electrokinetic phenomena
Bazant, M. Z., & Squires, T. M. (2010) · Current Opinion in Colloid & Interface Science · doi:10.1016/j.cocis.2010.01.003 · Cited by 283
Metadata
- Authors
- Studer, V., Pépin, A., Chen, Y., & Ajdari, A.
- Venue
- The Analyst
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2004
- Volume
- 129
- Issue
- 10
- Pages
- 944-949
- ISSN
- 0003-2654 (ISSN-L)
- 1364-5528
- OpenAlex
- W2099050658
- Cited by
- 290
- References
- 1
- FWCI
- 13.63
- Type
- journal article
- Language
- en
- Open access
- closed
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- Studer, V., Pépin, A., Chen, Y., & Ajdari, A. (2004). An integrated AC electrokinetic pump in a microfluidic loop for fast and tunable flow control. The Analyst. https://doi.org/10.1039/b408382m
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