Results 1 to 10 of about 2,450 (178)

Research Progress and Development Trends of Acoustic Metamaterials [PDF]

open access: yesMolecules, 2021
Acoustic metamaterials are materials with artificially designed structures, which have characteristics that surpass the behavior of natural materials, such as negative refraction, anomalous Doppler effect, plane focusing, etc.
Hao Song   +3 more
doaj   +4 more sources

Underwater acoustic metamaterials [PDF]

open access: yesNational Science Review, 2023
Abstract Acoustic metamaterials have been widely investigated over the past few decades and have realized acoustic parameters that are not achievable using conventional materials. After demonstrating that locally resonant acoustic metamaterials are capable of acting as subwavelength unit cells, researchers have evaluated the possibility ...
Erqian Dong, Peizheng Cao, Sai Zhang
exaly   +4 more sources

A Review of Tunable Acoustic Metamaterials

open access: yesApplied Sciences, 2018
Acoustic metamaterial science is an emerging field at the frontier of modern acoustics. It provides a prominent platform for acoustic wave control in subwavelength-sized metadevices or metasystems.
Shuang Chen   +6 more
doaj   +3 more sources

Sharkskin-Inspired Magnetoactive Reconfigurable Acoustic Metamaterials [PDF]

open access: yesResearch, 2020
Most of the existing acoustic metamaterials rely on architected structures with fixed configurations, and thus, their properties cannot be modulated once the structures are fabricated.
Kyung Hoon Lee   +5 more
doaj   +2 more sources

Ultra-low and ultra-broad-band nonlinear acoustic metamaterials [PDF]

open access: yesNature Communications, 2017
Linear acoustic metamaterials based on resonances are generally tunable but limited by their narrow bands. Here, Fang et al. fabricate one- and two-dimensional nonlinear acoustic metamaterials with a broadband, low-frequency, response—greatly suppressing
Xin Fang   +4 more
doaj   +2 more sources

Bandwidth broadening in cavity-type sound-absorbing metamaterials via additional equivalent stiffness [PDF]

open access: yesScientific Reports
The fixed acoustic characteristics of unit-cell cavities fundamentally limit the broadband sound absorption performance of cavity-type sound-absorbing metamaterials.
Li Bo Wang, Jiu Hui Wu, Jun Fu Zhang
doaj   +2 more sources

Research Progress of Locally Resonance Acoustic Metamaterials [PDF]

open access: yesE3S Web of Conferences, 2021
Bragg scattering phonon crystal and locally resonant acoustic metamaterials were introduced. In order to generate noise reduction, the lattice constant of Bragg scattering phonon crystal should be of the same order of magnitude as the wave length of the ...
Zhehua Du
doaj   +1 more source

A review of underwater acoustic metamaterials for underwater acoustic equipment

open access: yesFrontiers in Physics, 2022
Researchers use underwater acoustic equipment to explore the unknown ocean environment, which is one of the important means to understand and utilize the ocean.
Zhenjing Zhu   +17 more
doaj   +1 more source

Review and prospects of metamaterials used to control elastic waves and vibrations

open access: yesFrontiers in Physics, 2022
Acoustic metamaterials, artificial composite structures with exotic material properties used to control elastic waves, have become a new frontier in physics, materials science, engineering and chemistry.
Huajie Dai   +8 more
doaj   +1 more source

Control the structure to optimize the performance of sound absorption of acoustic metamaterial: A review

open access: yesAIP Advances, 2021
Acoustic metamaterials achieve the function of absorbing sound through equivalent negative parameters and bandgaps. Sound absorption is closely related to structural design.
Yan Du   +4 more
doaj   +1 more source

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