These sound waves can levitate and move particles in new ways
A new device captures particles within a sound field that can be shifted three dimensionally
![ultrasonic speaker](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/12/121718_mt_acoustic-levitation_feat_crop.jpg?fit=860%2C460&ssl=1)
UP IN THE AIR A new levitation device uses ultrasonic speakers to create “sound fields” that contain regions of high-intensity sound (white) and low-intensity sound (black) that can trap particles (green) in midair.
A. Marzo and B.W. Drinkwater/PNAS 2018