New 3D printer makes multi-material robots

3D printers can create a huge variety of shapes, usually deposited layer by layer using a single material. Creating objects made from several materials is possible, but switching between the different printable substances has so far been a slow process. Now a newly designed nozzle allows for rapid 3D printing of detailed objects with multiple materials. Read the paper here: Sign up for the Nature Briefing: An essential round-up of science news, opinion and analysis, free in your inbox every weekday: