Optimizing mixer geometries for dielectrophoretic micro-concentrators
Name
144579958-MIT.pdf
Description
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13.59 MB
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Author(s)
Lee, Hsu-Yi
Advisor(s)
Joel Voldman.
Alternative Title
Optimizing mixer geometries for DEP micro-concentrators
Date Issued
2006
Publisher
Massachusetts Institute of Technology
Abstract
Dielectrophoretic (DEP) force, generated by interdigitated electrodes (IDEs), has been utilized to capture bio-particles for microfluidic concentration. However, due to the localized DEP force, DEP-based ,/ -concentrators usually have shallow channels and thus are operated under low flow rates. In this thesis, we propose a mixer-enhanced DEP-based concentrator which can be operate under high flow rates (-200 /l/min) with 20 Vpp applied voltage. In particular, the optimal geometries of micromixers for the device are investigated and determined by simulations and experiments. The optimal micromixer-enhanced concentrator exhibits up to 1.5 x improvement in trapping efficiency as compared to a concentrator without mixers.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.
Includes bibliographical references (leaves 69-71).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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