Title: T-matrix evaluation of acoustic radiation forces on nonspherical objects in Bessel beams,
Abstract: Acoustical radiation force (ARF) induced by a single Bessel beam with
arbitrary order and location on a nonspherical shape is studied with the
emphasis on the physical mechanism and parameter conditions of negative
(pulling) forces. Numerical experiments are conducted to verify the T-matrix
method (TMM) for axial ARFs. This study may guide the experimental set-up to
find negative axial ARF quickly and effectively based on the predicted
parameters with TMM, and could be extended for lateral forces. The present work
could help to design acoustic tweezers numerical toolbox, which provides an
alternate to the optic tweezers.