Harnessing Deformation to Switch On and Off the Propagation of Sound

被引：156

作者：

Babaee, Sahab ^{[1
]}

Viard, Nicolas ^{[2
]}

Wang, Pai ^{[1
]}

Fang, Nicholas X. ^{[2
]}

Bertoldi, Katia ^{[1
,3
]}

机构：

[1] Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

[3] Harvard Univ, Kavli Inst, Cambridge, MA 02138 USA

来源：

ADVANCED MATERIALS | 2016年 / 28卷 / 08期

基金：

美国国家科学基金会;

关键词：

architected materials; deformation; acoustic switches; acoustic metamaterials; ACOUSTIC METAMATERIALS; PHONONIC CRYSTAL; SONIC CRYSTAL;

D O I：

10.1002/adma.201504469

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new class of architected materials is designed to control the propagation of sound. The proposed system comprises an array of elastomeric helices in background air and is characterized by frequency ranges of strong wave attenuation (bandgaps) in the undeformed configuration. Upon axially stretching the helices, such bandgaps are suppressed, enabling the design of a new class of acoustic switch.

引用

页码：1631 / 1635

页数：5

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