Numerical study on nanoparticles manipulation in fluid media using dielectrophoresis
Pages 95-100
M. Lungu, A. Neculae, O. M. Bunoiu
Abstract. The manipulation of nanoparticles is becoming an important issue as they are massively generated in combustion or material synthesis processes and are highly toxic to human health. Therefore, a considerable interest is shown to their separation in accordance with their physical or chemical characteristics using dielectrophoresis. Dielectrophoretic (DEP) force is exerted when a neutral particle is polarized in a non-uniform electric field, and depends on the dielectric properties of the particle and the suspending medium. This paper investigates the behavior of a suspension of nanometric particles under the action of DEP force. A theoretical model is proposed and a set of numerical results is provided. In particular, the particles' trajectories are computed for a planar electrode array configuration.