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Omnidirectional acoustic absorber with a porous core and a metamaterial matching layer (2014)
Journal Article
layer. Journal of Applied Physics, 115(20), 204902. https://doi.org/10.1063/1.4876119

An omnidirectional sound absorber based on the acoustic analogy of the electromagnetic metamaterial
“black hole” has been developed and tested. The resulting structure is composed of a hollow
cylindrical porous absorbing core and a graded index mat... Read More about Omnidirectional acoustic absorber with a porous core and a metamaterial matching layer.