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New robot concept uses responsive materials to swim through water. Engineers at Caltech and ETH Zurich have developed robots capable of self-propulsion without using any motors, servos, or power supply. Instead, these first-of-their-kind devices paddle through water as the material they are constructed from deforms with temperature changes. The work blurs the boundary between materials
Researchers use magnets to move tiny nano-devices faster than ever before. Researchers have devised a magnetic control system to make tiny DNA-based robots move on demand—and much faster than recently possible. In the journal Nature Communications, Carlos Castro and Ratnasingham Sooryakumar and their colleagues from The Ohio State University report that the control system reduced
3D printing becomes 4D as objects morph over time and temperatures change. Rutgers engineers have invented a “4D printing” method for a smart gel that could lead to the development of “living” structures in human organs and tissues, soft robots and targeted drug delivery. The 4D printing approach involves printing a 3D object with a