[Quartz] A tiny shape-shifting robot might someday be in your body
A group of engineers at MIT have developed tiny magnetic robots that could one day be used as biomedical devices inside humans. The robots were designed to be flexible, yet strong and built with a 3D printer using special magnetic ink. The robot can crawl, roll, jump, and even hold things. Scientists hope to use the magnetic robots to help blood vessels pump blood or take tissue samples.