Battery the size of a human hair could power medical robots inside the body
A tiny battery the width of a human hair could be used to power autonomous robots for drug delivery within the human body, researchers have discovered. A team from the Massachusetts Institute of Technology (MIT) has developed the cell-sized battery, which is just 0.1mm long and 0.002mm thick. It works by capturing oxygen from air and using it to oxidise zinc, which can create a current of up to 1 volt – enough to power a small circuit, sensor or actuator. “We think this is going to be very enabling for robotics,” said Professor Michael Strano, senior author of the study. “We’re building robotic functions onto the battery and starting to put these components together into devices.” While other researchers have developed microscale robots that use solar power, they must have a laser or…