title: A simple method for evaluating the trapping performance of acoustic tweezers.
abstract: The purpose of this paper is to present a rapid and simple method to evaluate the trapping performance of high frequency focused ultrasonic transducers for acoustic tweezer applications. The method takes into consideration the friction between the particle to be trapped and the surface that it resides on. As a result it should be more reliable and accurate than the methods proposed previously. The trapping force produced by a 70-MHz press-focused transducer was measured to evaluate the performance of this approach. This method demonstrates its potential in optimizing the excitation conditions for acoustic tweezer applications and the design of acoustic tweezers.
authors.affiliation: NIH Transducer Resource Center and Department of Biomedical Engineering, University of Southern California, Los Angeles, California 90089-1111, USA.
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.forename: Changyang
authors.initials: C
authors.lastname: Lee
authors.forename: Kwok
authors.initials: K
authors.lastname: Ho Lam
authors.forename: K
authors.initials: K
authors.lastname: Kirk Shung