British researchers have built the world’s first sonic tractor beams that lift and move objects using soundwaves. A team from the universities of Bristol and Sussex, in conjunction with Ultrahaptics, a spin-off set up by Sussex Professor of Informatics, Sriram Subramanian, used high-amplitude soundwaves to generate an acoustic hologram that can pick up and move small objects. Their research, led by PhD student Asier Marzo, was published in Nature Communications in October. The device allows […]