title: Acoustic trapping with a high frequency linear phased array.
abstract: A high frequency ultrasonic phased array is shown to be capable of trapping and translating microparticles precisely and efficiently, made possible due to the fact that the acoustic beam produced by a phased array can be both focused and steered. Acoustic manipulation of microparticles by a phased array is advantageous over a single element transducer since there is no mechanical movement required for the array. Experimental results show that 45 μm diameter polystyrene microspheres can be easily and accurately trapped and moved to desired positions by a 64-element 26 MHz phased array.
authors.affiliation: Department of Biomedical Engineering, NIH Resource Center for Ultrasonic Transducer Technology, University of Southern California, Los Angeles, California 90089, USA.
authors.forename: Fan
authors.initials: F
authors.lastname: Zheng
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.forename: Hsiu-Sheng
authors.initials: HS
authors.lastname: Hsu
authors.forename: Changgeng
authors.initials: C
authors.lastname: Liu
authors.forename: Chi
authors.initials: C
authors.lastname: Tat Chiu
authors.forename: Changyang
authors.initials: C
authors.lastname: Lee
authors.forename: Hyung
authors.initials: H
authors.lastname: Ham Kim
authors.forename: K Kirk
authors.initials: KK
authors.lastname: Shung