Abstract: Simulation of cells exerted by the dielectrophoresis plays an important role in the micro-manipulation fields. Traditional solution to dielectrophoretic force experienced cell is ideally considered as a regular sphere calculation. The effect of high-order dielectrophoretic forces are often neglected， which will cause greater error between molecular dynamics and experimental observation. Therefore， the effective moment method was used to solve high-order dielectrophoresis for both ellipsoid and erythrocyte in this paper. It is effective for classical Pohl expression to predict spherical cell exerted by dielectrophoresis. However， odd numerical moments are closely related to their shape such as ellipsoids and erythrocyte are non-zero from 1 to 9 order dipole moments. The dielectrophretic force of erythrocyte similar to oblate spheroid with indented side approximates the ellipsoid with eccentricity ratio 1∶5. The results were in good agreement with Ogbi’s reports.

Key words: dielectrophoresis, effective moment method, ellipsoid, erythrocyte, COMSOL software