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Three-dimensional broadband omnidirectional acoustic ground cloak.

Publication ,  Journal Article
Zigoneanu, L; Popa, B-I; Cummer, SA
Published in: Nature materials
April 2014

The control of sound propagation and reflection has always been the goal of engineers involved in the design of acoustic systems. A recent design approach based on coordinate transformations, which is applicable to many physical systems, together with the development of a new class of engineered materials called metamaterials, has opened the road to the unconstrained control of sound. However, the ideal material parameters prescribed by this methodology are complex and challenging to obtain experimentally, even using metamaterial design approaches. Not surprisingly, experimental demonstration of devices obtained using transformation acoustics is difficult, and has been implemented only in two-dimensional configurations. Here, we demonstrate the design and experimental characterization of an almost perfect three-dimensional, broadband, and, most importantly, omnidirectional acoustic device that renders a region of space three wavelengths in diameter invisible to sound.

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Published In

Nature materials

DOI

EISSN

1476-4660

ISSN

1476-1122

Publication Date

April 2014

Volume

13

Issue

4

Start / End Page

352 / 355

Related Subject Headings

  • Nanoscience & Nanotechnology
 

Citation

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Chicago
ICMJE
MLA
NLM
Zigoneanu, L., Popa, B.-I., & Cummer, S. A. (2014). Three-dimensional broadband omnidirectional acoustic ground cloak. Nature Materials, 13(4), 352–355. https://doi.org/10.1038/nmat3901
Zigoneanu, Lucian, Bogdan-Ioan Popa, and Steven A. Cummer. “Three-dimensional broadband omnidirectional acoustic ground cloak.Nature Materials 13, no. 4 (April 2014): 352–55. https://doi.org/10.1038/nmat3901.
Zigoneanu L, Popa B-I, Cummer SA. Three-dimensional broadband omnidirectional acoustic ground cloak. Nature materials. 2014 Apr;13(4):352–5.
Zigoneanu, Lucian, et al. “Three-dimensional broadband omnidirectional acoustic ground cloak.Nature Materials, vol. 13, no. 4, Apr. 2014, pp. 352–55. Epmc, doi:10.1038/nmat3901.
Zigoneanu L, Popa B-I, Cummer SA. Three-dimensional broadband omnidirectional acoustic ground cloak. Nature materials. 2014 Apr;13(4):352–355.

Published In

Nature materials

DOI

EISSN

1476-4660

ISSN

1476-1122

Publication Date

April 2014

Volume

13

Issue

4

Start / End Page

352 / 355

Related Subject Headings

  • Nanoscience & Nanotechnology