Robots that are soft in nature have come along in leaps and bounds of late, forming the basis for machines that are safer to work with, can grasp different objects and better handle rugged terrain. But the need to pack things like power sources and actuators inside has generally meant that miniaturization is out of the question. Researchers may have now opened the door to tiny, millimeter-scale soft robots, by developing a robotic caterpillar that is powered and controlled purely by external light.
via New Atlas
