Scientists create shape-shifting metal robot which melts through bars

Engineers have designed miniature robots that rapidly and reversibly shift between liquid and solid states. Scientists from Carnegie Mellon University in Pittsburgh took gallium, a metal that melts at room temperature, and enriched it with magnetic particles. When an alternate magnetic field is run through the metal, it can melt, move and re-form. Subscribe to The Telegraph with our special offer: just £1 for 3 months. Start your free trial now: Get the latest headlines: and are websites of The Telegraph, the UK’s best-selling quality daily newspaper providing news and analysis on UK and world events, business, sport, lifestyle and culture.