Abstract: Negative and Positive Dielectrophoresis of Particles in Curved Microchannels (2009 Annual Meeting)

Tuesday, November 10, 2009: 5:21 PM

Canal A (Gaylord Opryland Hotel)

Christopher Church, Mechanical Engineering, Clemson University, Clemson, SC

Juan Nieto, Mechanical Engineering, Clemson University, Clemson, SC

Gyunay Keten, Mechanical Engineering, Clemson University, Clemson, SC

Erl Ibarra, Mechanical Engineering, Clemson University, Clemson, SC

Xiangchun Xuan, Mechanical Engineering, Clemson University, Clemson, SC

We study particle electrophoresis and dielectrophoresis in curved microchannels. It was observed that particles are focused to either the centerline or the sidewalls of the channel depending on the concentration of the suspending medium. This phenomenon is a consequence of the negative or positive dielectrophoresis of particles induced by the non-uniform electric field intrinsic to curved channels. These distinct focusing trends may be used to separate particles by size in curved microchannels.

Extended Abstract: File Not Uploaded

See more of this Session: Electrokinetic Behavior of Micro and Nanoparticles: Fundamentals and Applications
See more of this Group/Topical: Topical 3: 2009 Annual Meeting of the American Electrophoresis Society (AES)