Title :
Correspondence: Dexterous ultrasonic levitation of millimeter-sized objects in air
Author :
Seah, Sue Ann ; Drinkwater, Bruce ; Carter, Troy ; Malkin, Rob ; Subramanian, Sivaraman
Author_Institution :
Dept. of Comput. Sci., Univ. of Bristol, Bristol, UK
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.
Keywords :
Bessel functions; acoustic field; ultrasonics; acoustic levitation; contactless handling; dexterous ultrasonic levitation; first order Bessel function shaped acoustic field; frequency 40 kHz; millimeter sized objects; Acoustic measurements; Acoustics; Arrays; Levitation; Measurement by laser beam; Transducers; Ultrasonic variables measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2014.3022
