Particle Concentration Effect On Dielectrophoretic Trapping

摘要: Dielectrophoresis (DEP) is an electric field driven technique that has important applications in the enrichment, concentration and isolation of biological and non-biological particles. The assessment of particle trapping capacity using DEP, however, has been qualitative in nature; since current mathematical models are in an early stage and more sophisticated models are under development [1]. Recent studies have shown a significant difference between the calculated DEP force and the experimental DEP force observed in a real system [2]. In most cases, a correction factor that matches experiments and simulations is employed to provide a more realistic description of the studied system [3]. While some hypothesis can be found in literature to explain the origin of this correction factor (eg, distortion of the electric field induced by particles, interaction between particles, variations in the local permittivity in the band of …