Acoustic metamaterials for noise reduction: a review

N Gao, Z Zhang, J Deng, X Guo… - Advanced Materials …, 2022 - Wiley Online Library
Noise pollution has become a significant global problem in recent years. Unfortunately,
conventional acoustic materials cannot offer substantial improvements in noise reduction …

3D metamaterials

M Kadic, GW Milton, M van Hecke… - Nature Reviews …, 2019 - nature.com
Metamaterials are rationally designed composites aiming at effective material parameters
that go beyond those of the ingredient materials. For example, negative metamaterial …

Emerging topics in nanophononics and elastic, acoustic, and mechanical metamaterials: an overview

AO Krushynska, D Torrent, AM Aragón, R Ardito… - …, 2023 - degruyter.com
This broad review summarizes recent advances and “hot” research topics in nanophononics
and elastic, acoustic, and mechanical metamaterials based on results presented by the …

Flexural wave band gaps in a multi-resonator elastic metamaterial plate using Kirchhoff-Love theory

EJP Miranda Jr, ED Nobrega, AHR Ferreira… - … Systems and Signal …, 2019 - Elsevier
We investigate theoretically the band structure of flexural waves propagating in an elastic
metamaterial thin plate. Kirchhoff-Love thin plate theory is considered. We study the …

[HTML][HTML] Design and experimental investigation of V-folded beams with acoustic black hole indentations

N Gao, Z Wei, H Hou, AO Krushynska - The Journal of the Acoustical …, 2019 - pubs.aip.org
This paper proposes a strategy to broaden complete bandgap attenuating flexural and
longitudinal modes, and to shift them to lower frequencies by spatially folding designs …

Development and progress in acoustic phase-gradient metamaterials for wavefront modulation

J Guo, Y Fang, R Qu, X Zhang - Materials Today, 2023 - Elsevier
Acoustic metamaterials (AMs) for sound wave manipulation have attracted significant
attention due to their fascinating functionalities, such as anomalous reflection/refraction …

Low-frequency sound absorption of a metamaterial with symmetrical-coiled-up spaces

GN Almeida, EF Vergara, LR Barbosa, R Brum - Applied Acoustics, 2021 - Elsevier
A theoretical, numerical and experimental investigation of a low-frequency acoustic
absorber (100–600 Hz) is reported herein. The acoustic metamaterial is based on a micro …

[HTML][HTML] Wave attenuation in elastic metamaterial thick plates: Analytical, numerical and experimental investigations

EJP Miranda Jr, ED Nobrega, SF Rodrigues… - International Journal of …, 2020 - Elsevier
We investigate the complex band structure and forced response of flexural waves
propagating in an elastic metamaterial thick plate. Mindlin-Reissner thick plate theory is …

Spiderweb nanomechanical resonators via bayesian optimization: inspired by nature and guided by machine learning

D Shin, A Cupertino, MHJ de Jong… - Advanced …, 2022 - Wiley Online Library
From ultrasensitive detectors of fundamental forces to quantum networks and sensors,
mechanical resonators are enabling next‐generation technologies to operate in room …

Reconfigurable 3D printed acoustic metamaterial chamber for sound insulation

Z Chen, YB Chong, KM Lim, HP Lee - International Journal of Mechanical …, 2024 - Elsevier
In this study, we propose a new reconfigurable hexagonal-shaped Helmholtz resonator with
a slit in each side. Numerical and experimental investigation of a single unit cell and the …