抄録
We studied the thrust force of a swimming-type magnetic micromachine. The micromachine was constructed from a permanent magnet and a spiral shape made of a tungsten wire. The magnet was magnetized in a diametrical direction. When a rotational magnetic field was applied, the machine rotated and moved in a fluid. It was experimentally found that the velocity of the micromachine trailing a wire was reduced when the kinematic viscosity was decreased. The shape of the micromachine that produced the largest thrust force was determined. To compare the analytical result with the experimental result, we made the micromachine by using a femtosecond laser. The analytical results agreed with the experimental results.
