In recent years, increasing attention has been paid to the impacts of environmental noises
on living creatures as well as the accuracy and stability of precise instruments. Due to …

The traditional sound absorption problem has not been completely resolved over the last
200 years. At every stage, its research has changed depending on practical requirements …

Low-frequency and broadband noise reductions have always been a major industrial
concern, as they pose a significant challenge. Although acoustic metamaterials are …

We design and experimentally realize an ultra-broad band metamaterial-based acoustic
absorption material. Unlike traditional acoustic absorbers, the designed device features a …

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 …

Acoustic metamaterials achieve the function of absorbing sound through equivalent
negative parameters and bandgaps. Sound absorption is closely related to structural design …

We propose a hybrid acoustic metamaterial as a super absorber for a relatively broadband
low-frequency sound based on a simple construction with deep-subwavelength thickness (5 …

An acoustic labyrinthine porous metamaterial (ALPM) or the so-called acoustic labyrinthine
metaporous surface is designed for the subwavelength sound absorption by perforating …

This paper proposed a metamaterial design method that uses soft matter for constructing a
unique soft acoustic boundary to effectively improve broadband sound absorption …

In the past two decades, acoustic metamaterials have garnered much attention owing to
their unique functional characteristics, which are difficult to find in naturally available …