A new type of artificial structure to achieve broadband omnidirectional acoustic absorption

L.-Y. Zheng, Ying Wu, X.-L. Zhang, X. Ni, Z.-G. Chen, M.-H. Lu, Y.-F. Chen

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We present a design for a two-dimensional omnidirectional acoustic absorber that can achieve 98.6% absorption of acoustic waves in water, forming an effective acoustic black hole. This artificial black hole consists of an absorptive core coated with layers of periodically distributed polymer cylinders embedded in water. Effective medium theory describes the response of the coating layers to the acoustic waves. The polymer parameters can be adjusted, allowing practical fabrication of the absorber. Since the proposed structure does not rely on resonances, it is applicable to broad bandwidths. The design might be extended to a variety of applications.
Original languageEnglish (US)
Pages (from-to)102122
JournalAIP Advances
Volume3
Issue number10
DOIs
StatePublished - Oct 18 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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