Nano Science and Technology Institute
Nanotech 2002 Vol. 1
Nanotech 2002 Vol. 1
Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems
 
Chapter 2: Micro and Nano Fluidic Systems
 

Numerical and Analytical Studies of AC Electric Field in Dielectrophoretic Electrode Arrays

Authors:J.J. Feng, S. Krishnamoorthy, Z.J. Chen and V.B. Makhijani
Affilation:CFD Research Corporation, US
Pages:24 - 27
Keywords:DEP, analytic solution, numerical method
Abstract:Manipulation of micro-sized particles and biological cells using dielectrophoresis (DEP) is an emerging technique in MEMS and nano technology[3]. This paper presents an exact solution of dielectrophoretic motion of a polarized particle in the vicinity of interdigitated bar electrodes fabricated on planar insulating surfaces which have been widely employed in conjunction with hydrodynamic forces and gravity to separate particles in field flow fractionation device[5]. We solved the electric field using exact mixed boundary conditions on the electrode plane. DEP forces exerted on a spherical particle are calculated and particle levitation is studied. Besides the levitation force, the particle will also experience a lateral force which causes particles clustering at certain locations above the electrode plane depending on the geometry of electrode array. Comparison is made with previous approximate solutions and numerical results.
Numerical and Analytical Studies of AC Electric Field in Dielectrophoretic Electrode ArraysView PDF of paper
ISBN:0-9708275-7-1
Pages:764
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