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 …

Acoustic tweezers are gaining increasing attention as a noncontact method that is capable
of handling microparticles and nanoparticles in a controllable manner. By designing the …

We use acoustic resonances in a planar layer of half-wavelength thickness to twist wave
vectors of an in-coming plane wave into a spiral phase dislocation of an outgoing vortex …

We demonstrate the trapping of elastic particles by the large gradient force of a single
acoustical beam in three dimensions. Acoustical tweezers can push, pull and accurately …

In certain medical applications, transmitting an ultrasound beam through the skin to
manipulate a solid object within the human body would be beneficial. Such applications …

Acoustic vortices can transfer angular momentum and trap particles. Here, we show that
particles trapped in airborne acoustic vortices orbit at high speeds, leading to dynamic …

We analyze spin and orbital angular momenta in monochromatic acoustic wave fields in a
homogeneous medium. Despite being purely longitudinal (curl-free), inhomogeneous …

Unlike optical waves, acoustic waves in fluids are described by scalar pressure fields, and
therefore are considered spinless. Here, we demonstrate experimentally the existence of …

We observe distinct regimes of orbital angular momentum (OAM) transfer from two-
dimensional Bessel-shaped acoustic vortices to matter. In a homogeneous diphasic mixture …

We present the analytical design and experimental realization of a scheme based on multi-
arm coiling slits to generate the stable acoustic vortices in a broadband. The proposed …