Wide-Angle Broadband Nonreflecting Acoustic Metamaterial Fence
Name
PhysRevApplied.13.054012.pdf
Description
Published version
Size
4.35 MB
Format
Unknown
Checksum (MD5)
94bb025699521e48a044ef2e5b6a331d
Author(s)
Liu, Chenkai
Ma, Chu
Li, Xinhao
Luo, Jie
Fang, Nicholas Xuanlai
Lai, Yun
Date Issued
2020
Journal
Physical Review Applied
Publisher
American Physical Society (APS)
Citation
Liu, Chenkai, Ma, Chu, Li, Xinhao, Luo, Jie, Fang, Nicholas X et al. 2020. "Wide-Angle Broadband Nonreflecting Acoustic Metamaterial Fence." Physical Review Applied, 13 (5).
Version
Final published version
Abstract
© 2020 American Physical Society. In this work, we theoretically propose and experimentally demonstrate a kind of nonreflecting acoustic metamaterial fence that is perfectly impedance matched to air over a wide range of incident angles and a broad frequency band. The metamaterial fence is composed of an array of rigid cylinders with alternating layers of different cylinder diameters. It is designed by a spatially dispersive effective medium theory and experimentally demonstrated by airborne sound reflectance measurements. Our work provides a unique approach to design and realize rigid acoustic structures that can robustly prohibit reflection and reverberation. Such structures may have important applications in general acoustics.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVAPPLIED.13.054012
