| Flow batteries for microfluidic networks: configuring an electroosmotic pump for nonterminal positions. | |
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MedLine Citation:
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PMID: 21375230 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A micropump provides flow and pressure for a lab-on-chip device, just as a battery supplies current and voltage for an electronic system. Numerous micropumps have been developed, but none is as versatile as a battery. One cannot easily insert a micropump into a nonterminal position of a fluidic line without affecting the rest of the fluidic system, and one cannot simply connect several micropumps in series to enhance the pressure output, etc. In this work we develop a flow battery (or pressure power supply) to address this issue. A flow battery consists of a +EOP (in which the liquid flows in the same direction as the field gradient) and a -EOP (in which the liquid flows opposite to the electric field gradient), and the outlet of the +EOP is directly connected to the inlet of the -EOP. An external high voltage is applied to this outlet-inlet joint via a short gel-filled capillary that allows ions but not bulk liquid flow, while the +EOP's inlet and the -EOP's outlet (the flow battery's inlet and outlet) are grounded. This flow battery can be deployed anywhere in a fluidic network without electrically affecting the rest of the system. Several flow batteries can be connected in series to enhance the pressure output to drive HPLC separations. In a fluidic system powered by flow batteries, a hydraulic equivalent of Ohm's law can be applied to analyze system pressures and flow rates. |
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Authors:
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Chiyang He; Joann J Lu; Zhijian Jia; Wei Wang; Xiayan Wang; Purnendu K Dasgupta; Shaorong Liu |
Publication Detail:
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Type: Letter; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2011-03-04 |
Journal Detail:
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Title: Analytical chemistry Volume: 83 ISSN: 1520-6882 ISO Abbreviation: Anal. Chem. Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-31 Completed Date: 2011-07-20 Revised Date: 2012-04-04 |
Medline Journal Info:
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Nlm Unique ID: 0370536 Medline TA: Anal Chem Country: United States |
Other Details:
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Languages: eng Pagination: 2430-3 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Electric Power Supplies* Electroosmosis / instrumentation* Microfluidic Analytical Techniques / instrumentation* Polymers / chemistry |
| Grant Support | |
ID/Acronym/Agency:
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R21 EB008512/EB/NIBIB NIH HHS; R21 EB008512-02/EB/NIBIB NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Polymers |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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