Electrokinetic (EK) pumping efficiency has recently been a hot topic due largely to its applications in microfluidics for liquid transport. As the Onsager reciprocity relation suggests that the exact opposite of EK pumping is EK generation, experimental study on the efficiency of the latter is seldom reported. This paper examines electrokinetic generation efficiency in the presence of finite external loads through the use of different ceramic filters. The electrical output power was measured experimentally as a function of different external loadings. When the experiments were performed continuously on subsequent days, the EK generation efficiency for all the tested filters can be made to increase and approach a maximum limit. The experimental data also indicated that, when pore size of the filter decreases, the curve for potential versus current becomes more non-linear and the maximum efficiency does not occur when the current is half the zero-potential current.
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ASME 3rd International Conference on Microchannels and Minichannels
June 13–15, 2005
Toronto, Ontario, Canada
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4185-5
PROCEEDINGS PAPER
Electrokinetic Generation Efficiency With Finite External Loads Available to Purchase
Fuzhi Lu,
Fuzhi Lu
University of Alberta, Edmonton, AB, Canada
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Ali Mansouri,
Ali Mansouri
University of Alberta, Edmonton, AB, Canada
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Tuck Y. How,
Tuck Y. How
University of Alberta, Edmonton, AB, Canada
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Larry W. Kostiuk,
Larry W. Kostiuk
University of Alberta, Edmonton, AB, Canada
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Daniel Y. Kwok
Daniel Y. Kwok
University of Alberta, Edmonton, AB, Canada
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Fuzhi Lu
University of Alberta, Edmonton, AB, Canada
Ali Mansouri
University of Alberta, Edmonton, AB, Canada
Tuck Y. How
University of Alberta, Edmonton, AB, Canada
Larry W. Kostiuk
University of Alberta, Edmonton, AB, Canada
Daniel Y. Kwok
University of Alberta, Edmonton, AB, Canada
Paper No:
ICMM2005-75174, pp. 529-534; 6 pages
Published Online:
November 11, 2008
Citation
Lu, F, Mansouri, A, How, TY, Kostiuk, LW, & Kwok, DY. "Electrokinetic Generation Efficiency With Finite External Loads." Proceedings of the ASME 3rd International Conference on Microchannels and Minichannels. ASME 3rd International Conference on Microchannels and Minichannels, Part B cont’d. Toronto, Ontario, Canada. June 13–15, 2005. pp. 529-534. ASME. https://doi.org/10.1115/ICMM2005-75174
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