Modeling and simulation for electric field of electrorotation microchip with ring electrode

Abstract

The turning performance of particle in electrorotation microchip experiment is related to its dielectric property. The ring electrodes of the chip are excited by alternating voltage source with a same frequency. The electric field distributed model within the ring electrodes, which is based on the Maxwell equations, is established. The boundary condition is approximated and simplified so that the second-order Laplace equation can be solved analytically to obtain the analytic description of electric field. Then the distribution of the dielectric force is calculated by Matlab when the model is quantized. The case may have some possibility that the alternating signal which exciting the electrorotation microchip will have asymmetric amplitude and phase, and the effect is preliminarily analyzed. © 2012 Springer-Verlag GmbH.