title: Harnessing Deformation to Switch On and Off the Propagation of Sound.
abstract: 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.
authors.affiliation: Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
authors.forename: Sahab
authors.initials: S
authors.lastname: Babaee
authors.affiliation: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Viard
authors.affiliation: Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
authors.forename: Pai
authors.initials: P
authors.lastname: Wang
authors.affiliation: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
authors.forename: Nicholas X
authors.initials: NX
authors.lastname: Fang
authors.affiliation: Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.|Kavli Institute, Harvard University, Cambridge, MA, 02138, USA.
authors.forename: Katia
authors.initials: K
authors.lastname: Bertoldi
keywords: acoustic metamaterials; acoustic switches; architected materials; deformation