(72c) Electrokinetic Manipulations of Microparticles in Curved Microchannels
- Conference: AIChE Annual Meeting
- Year: 2009
- Proceeding: 2009 Annual Meeting
- Group: 2009 Annual Meeting of the American Electrophoresis Society (AES)
- Time: Monday, November 9, 2009 - 1:06pm-1:24pm
We present electric field-mediated transport, focusing, and separation of microparticles in curved microchannels. Due to the curvature-induced electric field non-uniformity, particles experience negative dielectrophoresis when they migrate electrokinetically through a curved microchannel. This cross-stream particle motion is utilized to either focus particles into a tight stream near the outer wall, or separate particles by size to dissimilar streams in spiral microchannels.