Sound energy harvesting is one of the promising technologies due to the abundant and
clean sound sources. It can be the semi-permanent alternative power supplies for wireless …

Flexible resonant acoustic sensors have attracted substantial attention as an essential
component for intuitive human-machine interaction (HMI) in the future voice user interface …

The effective operation of certain electronic, medical, industrial, and testing equipment relies
on high-quality focusing and imaging capability, which also plays a vital role in the field of …

The ability to slow down wave propagation in materials has attracted significant research
interest. A successful solution will give rise to manageable enhanced wave–matter …

There is growing interest in the development of path coiling-based labyrinthine acoustic
metamaterials for realizing extraordinary acoustical properties such as low-to-mid frequency …

Herein, we report a new platform of machine learning-based speaker recognition via the
flexible piezoelectric acoustic sensor (f-PAS) with a highly sensitive multi-resonant …

Herein, we report a self-powered flexible piezoelectric acoustic sensor (f-PAS) inspired by
basilar membrane in human cochlear. The f-PAS covered the voice frequency spectrum via …

Piezoelectric metamaterials with shunt resonant circuits have been extensively investigated
for their tunability in bandgaps. However, the vibration attenuation ability induced by the …

In this Letter, a single-cavity underwater acoustic metasurface unit with sub-wavelength
thickness was designed for simultaneously realizing the high refractive index in the water …

Flexible piezoelectric acoustic sensors (f-PAS) have attracted significant attention as a
promising component for voice user interfaces (VUI) in the era of artificial intelligence of …