Acoustic metamaterials with circular sector cavities and programmable densities.


Considerable interest has been devoted to the development of various classes of acoustic metamaterials that can control the propagation of acoustical wave energy throughout fluid domains. However, all the currently exerted efforts are focused on studying passive metamaterials with fixed material properties. In this paper, the emphasis is placed on the… (More)
DOI: 10.1121/1.4744936


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