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Metamaterials acoustic barrier
Applied Acoustics, 2021Abstract Metamaterials represent a new technology in noise control fields. The first studies about metamaterials date back to the 1900s. The ability to deflect acoustic waves is due to the geometric of the structures that generate resonance effects, and to the periodic arrangement within the material.
Iannace G., Ciaburro G., Trematerra A.
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MRS Bulletin, 2008
AbstractThe field of engineered materials with designed properties is expected to continue to grow in the future, and metamaterials are instrumental in allowing this freedom of design. Metamaterials, particularly acoustic, are still in the stage of infancy.
Lee Fok, Muralidhar Ambati, Xiang Zhang
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AbstractThe field of engineered materials with designed properties is expected to continue to grow in the future, and metamaterials are instrumental in allowing this freedom of design. Metamaterials, particularly acoustic, are still in the stage of infancy.
Lee Fok, Muralidhar Ambati, Xiang Zhang
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Acoustic conjugate metamaterials
Physical Review B, 2019Compared to metamaterials based on regulation of real material parameters, artificial materials designed by controlling complex parameters exhibit richer physics and different functions. In this work, we present acoustic conjugate metamaterials, which possess complex mass densities and bulk compressibilities with opposite phases, to manipulate acoustic
Liang Chen, Li Fan, Shu-yi Zhang
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Acoustic Metamaterial Absorbers
2021Porous and fibrous materials provide effective and broadband acoustic absorption at mid/high audible frequencies. However, these traditional treatments result in thick and heavy layers when designed for low frequency audible sound. To overcome these limitations, in the recent years metamaterials have been proposed as an alternative to design sub ...
Jean-Philippe Groby +2 more
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Science, 2013
Soft materials that embed small resonators in a host material can dampen or focus sound.
Brunet, Thomas +2 more
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Soft materials that embed small resonators in a host material can dampen or focus sound.
Brunet, Thomas +2 more
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2021
Bubbly metamaterials are created by exploiting the low-frequency Minnaert resonance of bubbles, and can radically modify acoustic wave behaviour. In this presentation, I will first review the properties of bubble metascreens, which consist of a single layer of bubbles in a soft solid, and can be very efficient absorbers of waterborne acoustic waves ...
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Bubbly metamaterials are created by exploiting the low-frequency Minnaert resonance of bubbles, and can radically modify acoustic wave behaviour. In this presentation, I will first review the properties of bubble metascreens, which consist of a single layer of bubbles in a soft solid, and can be very efficient absorbers of waterborne acoustic waves ...
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Nonlinear acoustic metamaterials
The Journal of the Acoustical Society of America, 2019Acoustic metamaterials (AMM) have become a very active topic for research in numerous domains of engineering and science because of their promise to create materials, structures, and devices that can control acoustic wave propagation in ways that exceed the capabilities of naturally occurring or conventional composite materials.
Samuel P. Wallen +2 more
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An Overview on Acoustic Metamaterials
2021Acoustic metamaterials are artificially engineered composites composed of mesoscopic subwavelength units, which have recently become an active field with an enormous range of potential applications. These media, which derive their properties from their structure rather than from the chemical properties of their constitutive materials, can be tailored ...
Walter Bova +2 more
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Acoustic Metamaterial Wizardry
2020Acoustic metamaterials are non-naturally occurring structures consisting of arrays of sub-wavelength resonators designed to manipulate the propagation of sound, exhibiting effective negative density or modulus [1,2]. Counterintuitive metamaterial properties such as acoustic negative refraction, superlensing and cloaking have been demonstrated. Another
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