抄録
Brownian motion and cluster formation of non-magnetic particles in a magnetic fluid were investigated using an optical micro-scope system. Real-time visualization of cluster formation of non-magnetic particles were carried out by using micro-scope and high speed camera. The analysis of digital images with Particle Tracking Velocimetry (PTV) was applied to investigate the motion of non-magnetic particles. The mean velocity and mean cluster length of non-magnetic particles in cluster formation were analyzed.
