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Scientists at Drexel University in the US have created spray on antennas that perform as well as current antennas found in phones, routers and other gadgets. They have used a 2D metallic material called MXene, which they say can be painted onto everyday objects - widening the scope of the Internet of Things considerably. Professor Yury Gogotsi, who lead the project, explains how this new material can be applied and used. (Image: "Spray painting" invisibly thin antennas, Credit: Drexel University/Kanit Hantanasirisakul.)