Noise pollution has become a significant global problem in recent years. Unfortunately,
conventional acoustic materials cannot offer substantial improvements in noise reduction …

Greater demands for underwater sound absorption materials have been growing due to the
concern about underwater noise control in water. Among the range of existing materials …

Conventional sound absorbers can hardly own the good performance of low-frequency and
broadband absorption simultaneously. In order to combine these two functions into one kind …

In the past two decades, the research on acoustic metamaterials has flourished, which is
also benefited from the development of additive manufacturing technology. The exotic …

The study of acoustic metamaterials, also known as locally resonant sonic materials, has
recently focused on the topic of underwater sound absorption. The high absorption occurs …

Transmission loss (TL) of membrane-type locally resonant acoustic metamaterials (LRAMs)
with added ring masses was analyzed using both finite element analysis and experimental …

This research develops an underwater acoustic metamaterial, which can serve to absorb
broadband low-frequency underwater sound under high hydrostatic pressure ranging from …

Recently, by introducing locally resonant scatterers with spherical shape proposed in
phononic crystals into design of underwater sound absorption materials, the low-frequency …

The anechoic coating capable of absorbing sound energy in low frequency and broadband
is essential to conceal underwater vehicles. In this work, metagrating has been …

Although the conventional locally resonant acoustic metamaterials (LRAMs) have shown
better sound absorption performance in the low frequency band, the effective frequency …