365159 Selective Concentration and Separation of Colloidal Particles By Positive Reservoir-Based Dielectrophoresis (rDEP)

Monday, November 17, 2014: 12:30 PM
Marquis Ballroom D (Marriott Marquis Atlanta)
Cory Thomas1, Andrew Todd2, Xinyu Lu2 and Xiangchun Xuan3, (1)Clemson University, clemson, SC, (2)Clemson University, Clemson, SC, (3)Mechanical Engineering, Clemson University, Clemson, SC

Reservoir-based dielectrophoresis (rDEP) is a recently developed technique by our group that exploits the inherent electric field gradients at a reservoir-microchannel junction for particle and cell manipulations. It is based on the induced negative dielectrophoretic motion at the junction and has been demonstrated to trap and isolate particles based on size or surface charge and as well cells based on viability inside the reservoir. In this talk we present our recent experimental and numerical results for particle concentration and separation through positive rDEP. This separation is implemented by re-suspending a particle mixture into low-conductivity de-ionized water, which is compared with that in an electrolyte solution that induces negative rDEP.

Extended Abstract: File Not Uploaded
See more of this Session: Electrokinetics for Self-Assembly
See more of this Group/Topical: 2014 Annual Meeting of the AES Electrophoresis Society