Design of acoustic metamaterials made of Helmholtz resonators for perfect absorption by using the complex frequency plane

In this review, we present the results on sub-wavelength perfect acoustic absorption using acoustic metamaterials made of Helmholtz resonators with different setups. Low frequency perfect absorption requires to increase the number of states at low frequencies and finding the good conditions for impe...

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Autors principals:	Romero-García, V., Jiménez, N., Theocharis, G., Achilleos, V., Merkel, A., Richoux, O., Tournat, V., Groby, J.-P., Pagneux, V.
Format:	Artigo
Idioma:	Inglês
Publicat:	Académie des sciences 2021-01-01
Col·lecció:	Comptes Rendus. Physique
Matèries:	Acoustic metamaterials Perfect absorption Helmholtz resonators Locally resonant materials Critical coupling Complex frequency plane
Accés en línia:	https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.32/
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