Magnetic Micro Swimming Mechanism and Visualization of the Surface Flow Induced by the Mechanism Propulsion

Abstract

The micro magnetic swimming mechanism was produced for trial purposes based on the swimming analysis of copepods in the beginning. The magnetic mechanism composed of a permanent magnet and polyethyleneterephthalate film fin swims by the alternating magnetic field. Frequency characteristics of the swimming mechanism were examined, and surface flow fields induced by the robot propulsion were analyzed by visualization method. The swimming properties of micro magnetic mechanism were revealed experimentally.

Vibration Characteristics of Magnetic Fluid Droplet Adsorbed to Magnetized Needlepoint in Alternating Magnetic Field

“…The alternating magnetic field was generated by applying alternating voltage to the Helmholtz coil. The alternating current signal was supplied by the frequency synthesizer [7]. The direction of the magnetic field was parallel and anti-parallel in the gravity direction.…”

Alternating Magnetic Field Responses of Magnetic Fluid Drop Adsorbed to a Small Permanent Magnet

“…The test magnet-magnetic fluid element is composed of a cylindrical NdFeB permanent magnet and magnetic fluid. The diameter of the cylindrical magnet is 4 mm, the height is 5 mm, and the magnetic flux density is B=430 mT [5]. The magnet was bonded to the aluminium stick.…”