Leiden researchers Professor Daniela Kraft and Mengshi Wei have created microscopic robots that move without sensors, software, or external control. Instead, their behavior emerges entirely from their shape and the way they interact with their environment. They are only a few tens of micrometers long—far smaller than the width of a human hair—yet these robots can swim, sense, navigate and adapt in ways that look surprisingly life-like. And all this without having a brain.Leiden researchers Professor Daniela Kraft and Mengshi Wei have created microscopic robots that move without sensors, software, or external control. Instead, their behavior emerges entirely from their shape and the way they interact with their environment. They are only a few tens of micrometers long—far smaller than the width of a human hair—yet these robots can swim, sense, navigate and adapt in ways that look surprisingly life-like. And all this without having a brain.[#item_full_content]