Mid-air acoustic levitation is becoming a powerful tool to suspend and manipulate millimetric
objects. Because of its unique characteristics, acoustic levitation is suitable to trap a wide …

Acoustic/elastic metasurfaces as a kind of two-dimensional metamaterials are of
subwavelength thickness and show remarkable ability of acoustic/elastic wave …

Acoustic metasurfaces offer unique capabilities to steer and direct acoustic fields, though
these are generally composed of complex 3D structures, complicating their fabrication and …

As an emerging material, metasurfaces open the door to a wide range of applications based
on ultrasonic and elastic waves. However, most of the existing elastic metasurfaces have a …

Holographic methods from optics can be adapted to acoustics for enabling novel
applications in particle manipulation or patterning by generating dynamic custom-tailored …

Unlike the holography technique using active sound source arrays, metasurface-based
holography can avoid cumbersome circuitry and only needs a single transducer. However, a …

Recently, the notion of coding has been introduced to the design of metasurfaces, which
needs only several units to construct metasurface and provides an intelligent platform to …

Metasurface-based acoustic hologram projectors fabricated with fixed microstructures can
only generate the predesigned images at a single or few discrete frequencies. Here, a …

The emergence and development of acoustic artificial materials stimulate a large number of
applications for the manipulation of ultrasonic and elastic waves. Most of the reported …

Noise pollution remains a challenging problem requiring the development of novel systems
for noise insulation. Extensive work in the field of acoustic metamaterials has led to various …