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Active acoustic metamaterials.
The Journal of the Acoustical Society of America, 2010Extensive efforts are being exerted to develop various types of acoustic metamaterials to effectively control the flow of acoustical energy through these materials. However, all these efforts are focused on passive metamaterials with fixed material properties.
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Cochlear bionic acoustic metamaterials
Applied Physics Letters, 2014A design of bionic acoustic metamaterial and acoustic functional devices was proposed by employing the mammalian cochlear as a prototype. First, combined with the experimental data in previous literatures, it is pointed out that the cochlear hair cells and stereocilia cluster are a kind of natural biological acoustic metamaterials with the negative ...
Fuyin Ma +4 more
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Soft 3D acoustic metamaterials
The Journal of the Acoustical Society of America, 2015One of the current challenges in the field of metamaterials is to extend beyond electromagnetism in other areas such as acoustics [1]. Soft matter techniques coupled with microfluidics provide a unique tool to take up this challenge because they allow for the production of 3D locally resonant (random) materials composed of various soft resonators [2 ...
Thomas Brunet +4 more
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'Maxwellian' macroscopic acoustics and acoustic metamaterials
The Journal of the Acoustical Society of America, 2008For electromagnetic wave propagation it was found that there exist composite media exhibiting strong spatial dispersion. This has raised the question of the relevance of the spatial dispersion in the characterization of the new metamaterials. The present communication intends to show that exactly the same problematic occurs in acoustics when ...
Denis Lafarge, Aroune Duclos
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New acoustics, based on metamaterial
The Journal of the Acoustical Society of America, 2012With the capability to fabricate acoustical metamaterial:phononic crystals, double negative material and materials with material parameters based on the predetermined direction of sound propagation, one can control and manipulate sound propagation in solids and fluids.
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2015
A class of active acoustic metamaterial (AAMM) is presented. The proposed AAMM consists of an acoustic transmission line connected in parallel to an array of Helmholtz resonators that are provided with actively controlled boundaries. In this manner, the AAMM is in effect an assembly of periodic cells, each of which consists of a Helmholtz resonator ...
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A class of active acoustic metamaterial (AAMM) is presented. The proposed AAMM consists of an acoustic transmission line connected in parallel to an array of Helmholtz resonators that are provided with actively controlled boundaries. In this manner, the AAMM is in effect an assembly of periodic cells, each of which consists of a Helmholtz resonator ...
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The 2024 acoustic metamaterials roadmap
Journal of Physics D: Applied PhysicsAbstract Today, acoustic metamaterials (AMMs) form a core area of metamaterial research. They offer bespoke wave control, achievable through their rationally designed structure and are at the forefront of metamaterial applications and commercialisation.
Gregory James Chaplain +37 more
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Nonreciprocity in acoustic and elastic materials
Nature Reviews Materials, 2020Hussein Nassar +2 more
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