Acoustofluidic technologies utilize acoustic waves to manipulate fluids and particles within
fluids, all in a contact-free and biocompatible manner. Over the past decade, acoustofluidic …

This work aims to model the acoustic radiation forces acting on an elastic sphere placed in
an inviscid fluid. An expression of the axial and transverse forces exerted on the sphere is …

The classical optical theorem states that for a wave propagating in a lossless medium and
incident on a finite scatterer, the extinction cross section is proportional to the real part of the …

In this paper, we generalize the principle of a generated first-order acoustic vortex (AV) with
the acoustic resonances (AR) of a metasurface, from which we have also proposed a …

Negative radiation forces act opposite to the direction of propagation, or net momentum, of a
beam but have previously been challenging to definitively demonstrate. We report an …

Based on the generalized Lorenz-Mie theory and Maxwell stress tensor formulism, we
calculate the transverse force constant matrix and perform a linear stability analysis on a …

We seek stable tractor beams that not only axially pull objects but also transversely trap the
object. Transverse force acting on a spherical particle centered on the axis of acoustic …

In general, singular acoustic beams travel in a straight line and expand during propagation,
which limits the scope of their applications. We present a method for generating paraxial …

Exact formulas of the acoustic radiation force and torque exerted by an arbitrary time-
harmonic wave on an absorbing compressible particle that is suspended in an inviscid fluid …

Our examination of vortex fields of scalar waves illuminating an off-axis-located
axisymmetric object shows that the ratio of orbital angular momentum (OAM) transfer to …