Visualization of magnetic microparticles in liquid and control of their motion using dynamic magnetic field

Visualization technique of micro- or nanoparticles with sufficient spatial and temporal resolutions is required for quantitative study of motion of magnetic particles and their control using a dynamic magnetic field. Based on the particle tracking velocimetry method, a visualization system of micron-size particles has been developed. A proof-of-concept experiment of controlling magnetic particles using a dynamic magnetic field was made, and motions of magnetic particles under a dynamic magnetic field were visualized successfully using the developed system: the motions of particles synchronizing with the applied dynamic magnetic field could be observed.