Suppressing the field-induced agglomeration in the magnetic fluid by doping the nonmagnetic particles

摘要

A method for suppressing the field-induced agglomeration of magnetic particles in a magnetic fluid is proposed in this letter. After the magnetic fluid is doped with nonmagnetic silica particles, the field-induced agglomeration effect is weakened, and this suppressing effect is expressed by the measured birefringence magnitude and the simulation results of the agglomeration parameter. The optical properties of this system such as the optical transmission and response time are analyzed. With this method, the quality of the magnetic-fluid-based optical devices might be improved.