Electrokinetic Concentration and Separation of Particles in Microfluidic Reservoirs

submitted by: xcxuan
This video exhibits the selective concentration and separation of 3 um particles from 1 um particles in the upstream reservoir of a straight microchannel. This size-based particle sorting arises from the negative dielectrophoresis induced at the reservoir-microchannel junction where the size mismatch of the reservoir and microchannel creates strong inherent electric field gradients. Such reservoir-based dielectrophoretic sorting is superior to existing insulator-based dielectrophoresis...