Frozen sound: An ultra-low frequency and ultra-broadband non-reciprocal acoustic absorber

Anis Maddi (), Come Olivier, Gaelle Poignand, Guillaume Penelet, Vincent Pagneux and Yves Aurégan
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Anis Maddi: Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université
Come Olivier: Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université
Gaelle Poignand: Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université
Guillaume Penelet: Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université
Vincent Pagneux: Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université
Yves Aurégan: Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract The absorption of airborne sound is still a subject of active research, and even more since the emergence of acoustic metamaterials. Although being subwavelength, the screen barriers developed so far cannot absorb more than 50% of an incident wave at very low frequencies (

Date: 2023
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DOI: 10.1038/s41467-023-39727-4

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