title: Dexterous ultrasonic levitation of millimeter-sized objects in air.
abstract: Acoustic levitation in air has applications in contactless handling and processing. Here a first-order Bessel function-shaped acoustic field, generated using an 8-element circular array operating at 40 kHz, traps millimeter-sized objects against gravity. The device can manipulate objects in a vertical plane over a few millimeters with an accuracy of ± 0.09 mm.
authors: Sue Ann
authors: SA
authors: Seah
authors: Bruce W
authors: BW
authors: Drinkwater
authors: Tom
authors: T
authors: Carter
authors: Rob
authors: R
authors: Malkin
authors: Sriram
authors: S
authors: Subramanian