Investigation on configuration of self-assembly in magnetic fluid film under a magnetic field

Abstract

We experimentally study transmittances of water-based magnetic fluid (MF) film and the behaviors of nanoparticles under an external magnetic field. The transmittances of two orthogonally polarized rays exhibit different curve shapes. The experimental data are used to determine the values of three important parameters that are related to the intensity of the field. Based on the relationship between these parameters and the field, the self-assembly of particles is discussed. The method introduced in this paper can be employed as an available means to inspect the behavior of the particles in MF.