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 …

A hybrid acoustic metamaterial is proposed as a new class of sound absorber, which
exhibits superior broadband low-frequency sound absorption as well as excellent …

We present the idea and design of a dual polarized metasurface for electromagnetic energy
harvesting. A 4× 4 super cell with alternating vias between adjacent cells was designed to …

We observe that our experimentally measured emission power enhancement of a speaker
inside a previously proposed metacavity agrees with our numerically calculated …

The intensity of a wave emitted by a transducer affects its performance critically, especially
when the emitted wave is omnidirectional. However, the development of omnidirectional …

A new sound energy harvesting system that comprises an acoustic metastructure and a
double-clamped piezoelectric bimorph plate is presented. A subwavelength-scale acoustic …

Transceiving ultra-weak sound typically relies on signal pre-amplification at the transmitting
end via active electro-acoustic devices, which inherently perturbs the environment in the …

Locally resonant metamaterials exhibit sub-wavelength tunable bandgaps that can be
exploited for vibroacoustic mitigation. The present work investigates the use of metamaterial …

Abstract A three-dimensional (3D) highly-directive emission system is proposed to enable
beam shaping and beam steering capabilities in wideband frequencies. It is composed of an …

Emerging development of flexible acoustic devices focuses on constructing large‐area
acoustic sensing networks with high spatial and temporal resolution, enabling applications …