Acoustic metasurfaces derive their characteristics from the interaction between acoustic
waves and specifically designed materials. The field is driven by the desire to control …

Orbital angular momentum (OAM) has aroused a widespread interest in many fields,
especially in telecommunications due to its potential for unleashing new capacity in the …

Infrared and optical spectroscopy represents one of the most informative methods in
advanced materials research. As an important branch of modern optical techniques that has …

Broadband sound sink/absorber via a structure with deep sub-wavelength thickness is of
great and continuing interest in physics and engineering communities. An intuitive technique …

Vortices in fluids and gases have piqued the human interest for centuries. Development of
classical-wave physics and quantum mechanics highlighted wave vortices characterized by …

In this study, we show that robust and tunable acoustic asymmetric transmission can be
achieved through gradient-index metasurfaces by harnessing judiciously tailored losses. We …

Speeding up the transmission of information carried by waves is of fundamental interest for
wave physics, with pivotal significance for underwater communications. To overcome the …

The fine manipulation of sound fields is critical in acoustics yet is restricted by the coupled
amplitude and phase modulations in existing wave-steering metamaterials. Commonly …

Acoustic resonances in open systems, which are usually associated with resonant modes
characterized by complex eigenfrequencies, play a fundamental role in manipulating …

Long-range acoustic communication is crucial to underwater applications such as collection
of scientific data from benthic stations, ocean geology, and remote control of off-shore …