Design and Simulation of a Novel Magnetic Microactuator for Microrobots in Lab-On-a-Chip Applications

This article presents the design of a magnetic microactuator comprising soft material blocks and flexible beams. The modular layout proposed promotes scalability towards different microrobotic applications using low fields. presented consists three (Ni-Fe 4750) connected together via two Polydimethylsiloxane (PDMS) semi-circular A detailed approach is highlighted giving considerations toward compactness, range motion force characteristics actuator. actuator displacement are approximately linear in field strength 80-160 kA/m. It can achieve maximum displacements 111.6 µm (at 160 kA/m) during extension 10.7 80 contraction under no-load condition. output microactuator, computed through contact simulation, was 404.3 nN at achieved stroke angles up to 18.4 study where integrated with swimming microrobot executing rowing an artificial appendage, providing insight into capabilities actuating untethered microrobots.