A spacious three-coil magnetic manipulation system

This paper describes the construction and performance of a spacious and easily portable three-coil magnetic manipulation system. A uniform rotating magnetic field with a maximum field strength of 15 mT in a volume of 10 mm × 10 mm × 10 mm working space has been achieved. The three-coil system has been primarily designed for maneuvering helical magnetic nanorobots inside complex biological fluids where a greater magnetic field is desirable to induce maneuverability. The coil design can aid us in our goal of maneuvering magnetic nanorobots inside living animals in the near future while simultaneously imaging them through an optical microscope.