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dc.contributor.advisorAsmatulu, Ramazanen_US
dc.contributor.authorZhang, Bangwei
dc.date.accessioned2009-08-22T02:27:17Z
dc.date.available2009-08-22T02:27:17Z
dc.date.copyright2008en
dc.date.issued2008-12
dc.identifier.othert08075
dc.identifier.urihttp://hdl.handle.net/10057/2100
dc.descriptionWichita State University, College of Engineering, Dept. of Mechanical Engineeringen
dc.descriptionIncludes bibliographic references (leaves 64-67)
dc.description.abstractThis report presents the fabrication of a micro fluidic device using the UV lithography method in order to separate nonmagnetic fluoresbrite carboxy microspheres from the mixed ferrofluids in microchannels. The microfluidic device is fabricated using a SU8-50 negative photoresist that is exposed to the UV lights with a mask (Y shape) on the top of the photoresist. By applying the external magnet from a side of the microchannel, the fluoresbrite carboxy microspheres and ferrofluids are separated into different channels because of the magnetic force acted on the nonmagnetic spheres. During the fabrication, a number of different parameters, such as UV exposure times, UV power, photoresist thickness, etc. were conducted and optimized for our needs. In addition, in the magnetic field testing, different pumping speeds, and particle concentrations associated with the different distances between the magnet and the microfluidic system were studied for an efficient separation.en
dc.format.extentxvi, 67 p.en
dc.format.extent7857763 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherWichita State Universityen
dc.rightsCopyright 2008 by Bangwei Zhang. All Rights Reserveden
dc.subject.lcshElectronic dissertationsen
dc.titleGuiding nonmagnetic particles by external magnetic field in a microfluidic deviceen
dc.typeThesisen


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