Researchers recently created an acoustic hologram, or a 3D sound field projected onto a 2D space, which can be used as acoustic tweezers, cages and twisters that manipulate objects as they levitate in air. Credit: Image courtesy of Asier Marzo, Bruce Drinkwater and Sriram Subramanian © 2015 |
Continue reading Real-Life ‘Tractor Beam’ Can Levitate Objects Using Sound Waves