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Superabsorption of acoustic waves with bubble metascreens

Valentin Leroy1, Anatoliy Strybulevych2, Maxime Lanoy3,1, Fabrice Lemoult2,3, Arnaud Tourin3, and John H. Page2

  • 1Laboratoire Matière et Systèmes Complexes, Université Paris-Diderot, CNRS (UMR 7057), Paris, France
  • 2Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada
  • 3ESPCI Paris Tech, PSL Research University, CNRS, Institut Langevin, F-75005 Paris, France

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Phys. Rev. B 91, 020301(R) – Published 6 January, 2015

DOI: https://doi.org/10.1103/PhysRevB.91.020301

Abstract

A bubble metascreen, i.e., a single layer of gas inclusions in a soft solid, can be modeled as an acoustic open resonator, whose behavior is well captured by a simple analytical expression. We show that by tuning the parameters of the metascreen, acoustic superabsorption can be achieved over a broad frequency range, which is confirmed by finite element simulations and experiments. Bubble metascreens can thus be used as ultrathin coatings for turning acoustic reflectors into perfect absorbers.

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Synopsis

Thinner Stealth Coatings

Published 6 January, 2015

Antireflective acoustic coatings for hiding submarines and other watercraft could be made much thinner than those in use today.

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Phys. Rev. B 91, 020301(R)– Published 6 January, 2015
  • Received 6 October 2014
  • Revised 3 December 2014

©2015 American Physical Society

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