Based on the recent development of underwater sound absorption coatings, this paper
analyzes the evolution of underwater sound absorption coatings from two aspects …

Achieving broadband sound absorption in low-frequency ranges using thin acoustic
materials has been a long-standing and challenging problem in acoustics. When using the …

We report a kind of sound absorbing metastructure based on micro-perforated panel (MPP)
and impedance matching coiled-up cavity (IMCC), which can broaden the low-frequency …

Recent progress in minimizing sound absorbers is driven by their great scientific
significance and engineering value; however, compact devices for low-frequency sound are …

We propose a metaliner that can insulate the duct noise for various grazing flow speeds with
little flow resistance. The metaliner, whose unit cell consists of two different Helmholtz …

We propose a lightweight soundproofing meta-panel that suppresses noise in separate wide
frequency bands. The meta-panel has a multi-scale lattice structure sandwiched by two thin …

Acoustic metamaterials and acoustic metasurfaces have recently been exploited to design
lenses that have extraordinary sound focusing capabilities. Among these so-called …

In this paper, a patterned graphene metamaterial terahertz absorber is theoretically
designed. The proposed absorber consists of a gold layer, a dielectric layer of SiO 2, and …

We present near-perfect sound absorption using a metasurface composed of meta-atoms
(MAs) which are subwavelength Helmholtz resonators (HRs) with cavities non-uniformly …

This study proposes an acoustic metasurface composed of Helmholtz resonators coupled
with micro-perforations to achieve perfect sound absorption with a low Q-factor. A key …