Optimizing Mixer Geometries for Dielectrophoretic Micro-concentrators
نویسندگان
چکیده
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 A -concentrators usually have shallow channels and thus are operated under low flow rates. In this thesis, we propose a mixer-enhanced DEPbased concentrator which can be operate under high flow rates (~200 pd/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 micromixerenhanced concentrator exhibits up to 1.5 x improvement in trapping efficiency as compared to a concentrator without mixers. Thesis Supervisor: Joel Voldman Title: NBX Assistant Professor of Electrical Engineering and Computer Science
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