Superabsorption of acoustic waves with bubble metascreens

被引：188

作者：

Leroy, Valentin ^{[1
]}

Strybulevych, Anatoliy ^{[2
]}

Lanoy, Maxime ^{[1
,3
]}

Lemoult, Fabrice ^{[2
,3
]}

Tourin, Arnaud ^{[3
]}

Page, John H. ^{[2
]}

机构：

[1] Univ Paris Diderot, CNRS, Lab Mat & Syst Complexes, UMR 7057, Paris, France

[2] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB, Canada

[3] PSL Res Univ, ESPCI Paris Tech, CNRS, Inst Langevin, F-75005 Paris, France

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

ALBERICH ANECHOIC COATINGS; SCATTERING; CAVITIES; SOUND; METAMATERIALS; OSCILLATIONS; ABSORPTION; REFRACTION; INDEX;

D O I：

10.1103/PhysRevB.91.020301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：5

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