Could ‘tractor beam’ technology be a reality in medicine? – video

Scientists Sriram Subramanian and Asier Marzo explain how new sonic tractor beam technology lifts and spins objects in the air using only the forces produced by a field of ultrasonic waves. The technology allows for what the scientists call "containerless transportation", which could find uses in applications where material is dangerous to handle, or at risk of being contaminated by people or machinery, in particular medicine