Diffraction is a phenomenon related to the wave nature of light and arises when a
propagating wave comes across an obstacle. Consequently, the wave can be transformed in …

Acoustic actuation of fluids at small scales may finally enable a comprehensive lab-on-a-
chip revolution in microfluidics, overcoming long-standing difficulties in fluid and particle …

Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-
power laser radiation schemes. Nevertheless, it has drawbacks such as the produced …

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 …

Acoustic tweezers powerfully enable the contactless collective or selective manipulation of
microscopic objects. Trapping is achieved without pretagging, with forces several orders of …

Despite increasing demand in the manipulation of nanoscale objects for next generation
biological and industrial processes, there is a lack of methods for reliable separation …

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 report zero-th and high-order acoustic Bessel beams with broad depth-of-field generated
using acoustic holograms. While the transverse field distribution of Bessel beams generated …

A zeroth-order, non-diffracting Bessel beam, generated by picosecond laser pulses (1064
nm, 10 Hz, 30 ps) through an axicon, was utilized to perform pulse energy-dependent (12 …

The controlled rotation of solid particles trapped in a liquid by an ultrasonic vortex beam is
observed. Single polystyrene beads, or clusters, can be trapped against gravity while …