Researchers create ultrasonic 'tube' that guides liquids and gases through the air
Prototype uses 256 speakers to confine and steer matter with sound, paving the way for contactless transport of hazardous substances
Scientists at the University of Helsinki, in collaboration with the Public University of Navarre and the University of Michigan, have demonstrated a prototype ultrasonic tube that can confine and guide liquids, gases, powders and even electrical discharges through the air using nothing but sound waves. The device, described as the closest thing to magic by the project leader, could eventually enable contactless handling of corrosive or sticky materials that damage conventional pipes.