Results 141 to 150 of about 9,256 (180)
Some of the next articles are maybe not open access.
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 ...
openaire +1 more source
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 ...
openaire +1 more source
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
openaire +1 more source
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
openaire +2 more sources
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
openaire +1 more source
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.
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
'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
openaire +1 more source
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.
openaire +1 more source