Partial-wave series expansions (PWSEs) satisfying the Helmholtz equation in spherical
coordinates are derived for circular spherically focused piston (ie, apodized by a uniform …

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 acoustic counterpart of optical tweezers shows great promise as a single-particle
manipulator using a highly focused acoustic beam. Understanding the dependence of the …

In this paper, an expression for the acoustic radiation force on a sphere located on the axis
of a zero-order Mathieu beam propagating in an ideal fluid is obtained. The simulation …

The use of ultrasonic transducers with a central hollow is suggested for improved single-
beam acoustical tweezers applications. Within the framework of the Fresnel-Kirchhoff …

The possibility to trap a sphere in the near-field of a single-beam piston transducer is
theoretically demonstrated. Conditions are found where a rigid, fluid, elastic, and …

The acoustic radiation force of Langevin type resulting from the interaction of a high-order
Bessel beam with a rigid immovable sphere in an ideal fluid is theoretically investigated. The …

A rigorous theory is developed to predict the radiation force (RF) exerted on a sphere
immersed in an ideal fluid by a standing or quasistanding zero-order Bessel beam of …

The tractor behavior of a zero-order Bessel acoustic beam acting on a fluid sphere, and
emanating from a finite circular aperture (as opposed to waves of infinite extent) is …

More than two decades and a half ago, Ashkin's seminal work on the trapping of dielectric
particles with a tightly focused laser beam enhanced an exciting investigation field: optical …