Chain-like Clustering of Fine Particles in a Magnetic Fluid

Chain-like clustering of 3μm Sio2 particles was investigated by Monte Carlo simulation along with the experiment. The magnetic force was applied in parallel to the particle layer suspended in a thin film of magnetic fluid. The size distribution of chain-like clusters was measured in relationship to the coverage c or the bulk-mean area fraction of particles: k=90c1.38 The agreement between the computer simulation and the experiment was fairly good. Particle movement from the initial to final equilibrium positions was also measured for all particles. Monte Carlo simulation was foud to underestimate the particle movement in the region of high particle concentration.