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dc.contributor.authorMoore, Thomas Allen
dc.contributor.otherQueen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))en
dc.date2011-04-01 11:24:36.653en
dc.date2011-04-01 17:12:02.908en
dc.date.accessioned2011-04-06T14:17:45Z
dc.date.available2011-04-06T14:17:45Z
dc.date.issued2011-04-06T14:17:45Z
dc.identifier.urihttp://hdl.handle.net/1974/6350
dc.descriptionThesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2011-04-01 17:12:02.908en
dc.description.abstractAn alternating current electroosmotic micro pumping device has been designed, experimentally tested and theoretically analyzed using an electrohydrodynamic theoretical model applied to a computer simulation model. The device SP-1 is a microelectrode array which uses the principal of AC electroosmosis (EO), ions driven along microelectrode surfaces by coulomb forces produced by tangential electric fields. These ions, when driven, induce a net fluid motion due to viscous drag forces. Three submerged microelectrode wires were deposited on a substrate using microfabrication techniques such that a square spiral geometry was formed. Device SP-1 received asymmetrically applied AC signals creating a travelling wave of potential and resulted in a net fluid flow across the microelectrode array. Microsphere tracer particles were suspended in ethanol to measure the fluid velocity to determine pumping performance and the experimental operating frequency at which maximum fluid velocity is achieved. The experimental results were reviewed and at an AC signal frequency of 125 Hz, device SP-1 was capable of pumping ethanol at a fluid velocity of approximately 270 μm/s. The experimental results were in good agreement with the theoretical predictions produced using the computer simulation model. In addition, the computer simulation model predicted a similar flow profile to those previously predicted and experimentally observed. Overall, novel micropumping device SP-1 was found to produce a net flow comparable to previously tested devices and a computer simulation framework capable of analyzing future micropump design concepts was developed.en
dc.languageenen
dc.language.isoenen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectMEMSen
dc.subjectmicropumpen
dc.subjectACEOen
dc.subjectmicrofluidicsen
dc.subjectelectrokineticsen
dc.subjectelectrohydrodynamicsen
dc.titleAlternating Current Electroosmotic Micropumping Using A Square Spiral Microelectrode Arrayen
dc.typethesisen
dc.description.degreeMasteren
dc.contributor.supervisorLai, Yongjunen
dc.contributor.departmentMechanical and Materials Engineeringen


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