Fine 2D Motion Control of Microneedle Directly Driven by Magnetic Field

This paper presents a two-dimension motion control system that using a magnetic field to drive a magnetically driven microneedle for trajectory-controlled motion. In our system, two vertical electromagnets are used to directly drive a microneedle that containing ferromagnetic beads to perform two-dimension motion. The experimental results show the microneedle tip can follow complex trajectories that have been planned in two-dimension space. Moreover, the position deviation was less than 0.2 μm during the microneedle motion, which demonstrates the proposed system has a high-precision capability. The proposed magnetic system realizes trajectory-controlled and high-precision two-dimension motion, which will broaden its industrial and biomedical applications.