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18 August 2000 Dielectrophoretic trapping without embedded electrodes
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Proceedings Volume 4177, Microfluidic Devices and Systems III; (2000)
Event: Micromachining and Microfabrication, 2000, Santa Clara, CA, United States
We observe dielectrophoretic effects in mixed electrokinetic and dielectrophoretic flows in uniform arrays of posts. Above a threshold applied electric field, flowing filaments of concentrated and rarefied particles appear in the flow. Above a higher-threshold applied field, zones of highly concentrated, immobilized particles appear. At the lower and higher thresholds, dielectrophoresis apparently begins to dominate diffusion and advection/electrokinesis, respectively. The patterns of filaments and trapped zones depend dramatically on the angle of the array with respect to the mean applied electric field and the shape of the posts in the array.
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Eric B. Cummings and Anup K. Singh "Dielectrophoretic trapping without embedded electrodes", Proc. SPIE 4177, Microfluidic Devices and Systems III, (18 August 2000);

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