| A low-voltage nano-porous electroosmotic pump. | |
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MedLine Citation:
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PMID: 20684961 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A low-voltage electroosmotic (EO) micropump based on an anodic aluminum oxide (AAO) nano-porous membrane with platinum electrodes coated on both sides has been designed, fabricated, tested, and analyzed. The maximum flow rate of 0.074 ml min(-1) V(-1) cm(-2) for a membrane with porosity of 0.65 was obtained. A theoretical model, considering the head loss along the entire EO micropump system and the finite electrical double layer (EDL) effect on the flow rate, is developed for the first time to analyze the performance of the EO micropump. The theoretical and experimental results are in good agreement. It is revealed that the major head loss could remarkably decrease the flow rate, which thus should be taken into account for the applications of the EO micropump in various Lab-on-a-chip (LOC) devices. However, the effect of the minor head loss on the flow rate is negligible. The resulting flow rate increases with increasing porosity of the porous membrane and kappaa, the ratio of the radius of the nanopore to the Debye length. |
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Authors:
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Ye Ai; Sinan E Yalcin; Diefeng Gu; Oktay Baysal; Helmut Baumgart; Shizhi Qian; Ali Beskok |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-07-16 |
Journal Detail:
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Title: Journal of colloid and interface science Volume: 350 ISSN: 1095-7103 ISO Abbreviation: J Colloid Interface Sci Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-08-23 Completed Date: 2010-12-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0043125 Medline TA: J Colloid Interface Sci Country: United States |
Other Details:
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Languages: eng Pagination: 465-70 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Mechanical and Aerospace Engineering, Old Dominion University Norfolk, VA 23529-4027, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aluminum Oxide
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chemistry* Electric Conductivity* Electrodes Electroosmosis / instrumentation* Lab-On-A-Chip Devices* Nanotechnology Porosity |
| Chemical | |
Reg. No./Substance:
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1344-28-1/Aluminum Oxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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