2016•Applied Physics LettersRequires access
Experiments on metasurface carpet cloaking for audible acoustics
Cédric Faure, Olivier Richoux, Simon Félix, Vincent Pagneux
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Abstract
We present experiments on acoustic carpet cloaking by using a metasurface made of graded Helmholtz resonators. The thin metasurface, placed over the object to hide, is designed such that the reflection phase shifts of the resonators at the resonance frequency are tuned to compensate the shape of the object to cloak. Experimental as well as numerical results show the efficiency of the cloak at the resonance frequency. The reflection of a short pulse is also reported to inspect the broadband character of the cloak.