Fabrication and targeted particle delivery using microrobots

Microrobots have potential functions in bio-applications such as cell transportation, drug delivery, etc. The microrobots can swim in fluid with low-Reynolds numbers by magnetic manipulation. It is important to deliver the cells and drugs without loss during transportation. In this study, the microrobots were fabricated using 3D laser lithography and metal layers were deposited by sputtering system. We demonstrated loading, encapsulation, and unloading of micro-bead with the fabricated microrobot with rotating magnetic field. This result shows the potential for drug delivery and cell transportation without coating or fixing the drug and cells on the microrobot surface.