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Modeling and analysis of a microfluidic capillary valve

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dc.contributor.author Yıldırım, Ender
dc.date.accessioned 2020-03-18T07:27:23Z
dc.date.available 2020-03-18T07:27:23Z
dc.date.issued 2017-06
dc.identifier.citation Yıldırım, Ender, "Modeling and analysis of a microfluidic capillary valve", Journal Of Polytechnic-Politeknık Dergisi, Vol.20, No.2, pp. 487-494, (2017). tr_TR
dc.identifier.issn 1302-0900
dc.identifier.uri http://hdl.handle.net/20.500.12416/2660
dc.description.abstract Here, a numerical model for analysis of a capillary valve for use in microfluidic devices was presented. Capillary valves are preferred especially in passive microfluidic systems, where the capillary forces dominate the liquid motion, to manipulate the flow. The capillary valve in this work, was formed by the sudden expansion of a rectangular microchannel to an opening, whose depth and width are larger than the height and the width of the channel respectively. Noting that there was no available analytical model to determine the pressure capacity of such valves, a numerical model based on energy minimization was utilized. Free software Surface Evolver was used to solve the model. Dependence of the pressure capacity on the contact angle of the working liquid on the channel material was investigated. It was found that the pressure capacity of the valves would be maximum if the contact angle on all surfaces is 90 degrees. Accordingly, the valves could withstand approximately 2.5 kPa for 100 mu m x 100 mu m channels when the contact angle was 90 degrees. The model was verified by comparing the results with those available in the literature. tr_TR
dc.language.iso eng tr_TR
dc.publisher Gazi Univ tr_TR
dc.relation.isversionof 10.2339/2017.20.2.487-494 tr_TR
dc.rights info:eu-repo/semantics/closedAccess tr_TR
dc.subject Microfluidic tr_TR
dc.subject Capillary Valve tr_TR
dc.subject Pressure Capacity tr_TR
dc.subject Contact Angle tr_TR
dc.title Modeling and analysis of a microfluidic capillary valve tr_TR
dc.type article tr_TR
dc.relation.journal Journal Of Polytechnic-Politeknık Dergisi tr_TR
dc.contributor.authorID 31835 tr_TR
dc.identifier.volume 20 tr_TR
dc.identifier.issue 2 tr_TR
dc.identifier.startpage 487 tr_TR
dc.identifier.endpage 494 tr_TR
dc.contributor.department Çankaya Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği tr_TR


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