Harnessing Deformation to Switch On and Off the Propagation of Sound.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 26663556.
- Also identified by DOI 10.1002/adma.201504469.
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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.