磁性液体透射光的场致驰豫性

研究了在磁场作用下,经过磁性液体的透射光的驰豫特性.结果表明,加上磁场后,透射光强立即增加,随后减弱.如果磁场的均匀性较差,透射光将保持衰减趋势.反之,透射光减小到一个最低值后又将增加,直到趋于一稳定值.这种透射光的驰豫性质对应着磁场作用下磁性液体的各向异性微结构的形成过程.

Field-Induced Relaxation Behavior of Transmitted Light Through Ferrofluids

Relaxation behavior of transmitted light through ferrofluids under applied magnetic field is studied. The results show the intensity of transmitted light increase quickly as soon as magnetic field is applied, then weakens with time. If uniformity of the field is poor, the transmission of light remains to decrease. Otherwise, the transmission of light will increase to tend a stable value after decreasing to minimum value. The relaxation time is order of some hundreds seconds. The relaxation process of field-induced transmission of light is corresponding to anisotropic microstructure of ferrofluid forming under applied magnetic field.