Dielectrophoresis of an inhomogeneous colloidal particle under an inhomogeneous field: a first-principles approach.
In reality, colloidal particles often possess an arbitrary inhomogeneity profile. We present a first-principles approach to dielectrophoresis of such an inhomogeneous colloidal particle under an inhomogeneous field of an oscillating electric dipole moment. For numerical simulations, we treat the inhomogeneous particle as a specific graded one with a physically motivated dielectric model and conductivity profile. We find that both multipolar interactions and spatial fluctuations inside the particle can affect the dielectrophoretic spectrum of the particle significantly.
Fan
C Z
CZ
Surface Physics Laboratory (National Key Laboratory) and Department of Physics, Fudan University, Shanghai 200433, China.
Huang
J P
JP
Yu
K W
KW
D003102:Colloids; D004586:Electrophoresis / Q000379:methods*
D003102:Colloids