Dielectrophoresis (DEP) is a powerful tool for particle and cell manipulations in microfluidic devices. Our group has recently developed a new method that exploits the intrinsic curvature of microchannel walls for a diverse electrical control of particle and cell motions, which is termed Curvature-induced Dielectrophoresis (C-iDEP). Due to the variation in path length for electric current, the electric field becomes inherently non-uniform within a microchannel turn. Thus induced DEP can generate a cross-stream particle motion, which is a nonlinear function of electric field and superimposed to the linear electrokinetic motion enabling flexible particle manipulations. This paper presents our recent results on the deflection, focusing, filtration, and separation of particles and cells in curved microchannels by the use of C-iDEP.

This content is only available via PDF.
You do not currently have access to this content.