Magnetic localization and manipulation of locking synchronous motors.

Summary: Imagine trying to guide a tiny robot inside the human body using magnets. To do this safely, doctors need to know exactly where the robot is at all times. Older methods made the robots too bulky or required complicated, heavy equipment outside the body. Now, scientists have invented a clever new way! They use a tiny magnetic motor that can lock and unlock using heat. By spinning this tiny magnet, a single sensor outside the body can track its exact 3D location and then steer it where it needs to go. This new technology could make tiny medical robots much safer, smaller, and easier to use!