Journal
PHYSICAL REVIEW B
Volume 91, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.020301
Keywords
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Funding
- LABEX WIFI (Laboratory of Excellence) within the French Program Investments for the Future [ANR-10-LABX-24, ANR-10-IDEX-0001-02 PSL*]
- Discovery Grants Program of the Natural Sciences and Engineering Research Council of Canada
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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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