Analysis of Particle Motion in a Micro-Fluidic Dielectrophoretic Device

Abstract:- Interdigitated microelectrodes have found wide applications in manipulating and/or separating biological particles due to their simple structure and easy implementation. Particle behaviors in such interdigitated microelectrode devices are affected by a number of factors, including particle size, electrical potential, chamber geometry and dielectric properties. This paper presents systematical simulation study of particle behaviors in these devices by considering all these influencing factors. A case study is presented to separate different particles using both positive and negative DEP. Key-Words:- Dielectrophoresis, interdigitated microelectrodes, DEP forces, hydrodynamic drag force, buoyancy force, particle motion