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 …

Acoustical tweezers based on focalized acoustical vortices hold the promise of precise
contactless manipulation of millimeter down to submicrometer particles, microorganisms …

Acoustic tweezers have recently raised great interest across many fields including biology,
chemistry, engineering, and medicine, as they can perform contactless, label-free …

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 …

Based on the Huygens-Fresnel principle, a metasurface structure is designed to generate a
sound vortex beam in airborne environment. The metasurface is constructed by a thin planar …

Contactless manipulation of microparticles is demonstrated with single-beam acoustical
tweezers based on precursor swirling Rayleigh waves. These surface waves degenerate …

Surface acoustic waves (SAWs) can concentrate micro-particles in droplets within seconds.
Yet, the mechanism is not clear and existing explanations fail by several orders of …

We show experimental evidence of the acoustically-assisted micromanipulation of small
objects like solid particles or blood cells, combining rotation and translation, using high …

We observe a series of unstable and dynamic behaviors of acoustic vortices propagating in
stratified inhomogeneous media. These behaviors include bending, stretching, distorting …

Interdigitated transducers (IDTs) were originally designed as delay lines for radars. Half a
century later, they have found new life as actuators for microfluidic systems. By generating …