Harnessing Deformation to Switch On and Off the Propagation of Sound.

Babaee, Sahab; Viard, Nicolas; Wang, Pai; Fang, Nicholas X; Bertoldi, Katia

Babaee, Sahab; Viard, Nicolas; Wang, Pai; Fang, Nicholas X; Bertoldi, Katia.

Afiliação

Babaee S; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
Viard N; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
Wang P; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
Fang NX; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
Bertoldi K; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.

Adv Mater ; 28(8): 1631-5, 2016 Feb 24.

Article em En | MEDLINE | ID: mdl-26663556

RESUMO

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.

Palavras-chave

acoustic metamaterials; acoustic switches; architected materials; deformation

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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2016 Tipo de documento: Article

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