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Guiding nonmagnetic particles by external magnetic field in a microfluidic device

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dc.contributor.advisor Asmatulu, Ramazan en_US
dc.contributor.author Zhang, Bangwei
dc.date.accessioned 2009-08-22T02:27:17Z
dc.date.available 2009-08-22T02:27:17Z
dc.date.copyright 2008 en
dc.date.issued 2008-12
dc.identifier.other t08075
dc.identifier.uri http://hdl.handle.net/10057/2100
dc.description Wichita State University, College of Engineering, Dept. of Mechanical Engineering en
dc.description Includes bibliographic references (leaves 64-67)
dc.description.abstract This 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.extent xvi, 67 p. en
dc.format.extent 7857763 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Wichita State University en
dc.rights Copyright 2008 by Bangwei Zhang. All Rights Reserved en
dc.subject.lcsh Electronic dissertations en
dc.title Guiding nonmagnetic particles by external magnetic field in a microfluidic device en
dc.type Thesis en

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