The Relation between Surface Shape and Magnetic Field Distribution in Magnetic Fluid Bridge System in Alternating Magnetic Field

Abstract

The dynamic response of a magnetic fluid bridge between two cylindrical permanent magnets subject to an alternating magnetic field was investigated with a high-speed video camera analysis system. When the magnetic fluid bridge system was subjected to an alternating magnetic field, the bridge showed shape oscillation. The relationship between the shape of magnetic fluid bridge and the magnetic field around the bridge was revealed experimentally. The magnetic field distribution around the bridge system was measured, and the relation between the magnetic field distribution and the magnetic fluid surface motion was discussed. The complicated capillary phenomena of a magnetic fluid bridge under the influence of a dynamic magnetic field were revealed experimentally.