Sperm-inspired Robots Controlled by Magnetic Fields May Be Useful for Drug Delivery, IVF, Cell Sorting and Other Applications

“A team of researchers has developed sperm-inspired microrobots, which consist of a head coated in a thick cobalt-nickel layer and an uncoated tail. When the robot is subjected to an oscillating field of less than five millitesla, it experiences a magnetic torque on its head, which causes its flagellum to oscillate and propel it forward.”