Journal
ADVANCED MATERIALS
Volume 28, Issue 8, Pages 1631-1635Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201504469
Keywords
architected materials; deformation; acoustic switches; acoustic metamaterials
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Funding
- NSF [CMMI-1120724, CMMI-1149456]
- Harvard MRSEC [DMR-1420570]
- Office of Naval Research, Multidisciplinary University Research Initiative [N00014-13-1-0631]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1120724] Funding Source: National Science Foundation
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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.
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