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

LiYang Zheng | Zendy; Ying Wu | Zendy; Xiao-Liu Zhang | Zendy; Xu Ni | Zendy; ZeGuo Chen | Zendy; MingHui Lu | Zendy; Yanfeng Chen | Zendy

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

Author(s) -

LiYang Zheng,

Ying Wu,

Xiao-Liu Zhang,

Xu Ni,

ZeGuo Chen,

MingHui Lu,

Yanfeng Chen

Publication year - 2013

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4826610

Subject(s) - omnidirectional antenna , broadband , acoustics , absorption (acoustics) , materials science , fabrication , coating , acoustic wave , physical acoustics , computer science , physics , nanotechnology , telecommunications , antenna (radio) , medicine , alternative medicine , pathology

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

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