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Experimental Acoustic Ground Cloak in Air
Abstract
We present the design, fabrication, and performance analysis for a class of two-dimensional acoustic cloaking coatings in air. Our approach takes advantage of transformation acoustics and linear coordinate transformations that result in shells which are homogeneous, broadband, and compact. The required material parameters are highly anisotropic; however, we show that they are easily achievable in practice in metamaterials made of perforated plastic plates. The good performance of the fabricated design is assessed from measurements of the sound field produced around the cloak by a broadband source. The remarkably low complexity of the device made of perforated plastic plates shows that sound in air can be fully and effectively manipulated using realizable transformation acoustics devices.
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Citations
Cited by
Sound and heat revolutions in phononics
Maldovan, M. (2013) · Nature · doi:10.1038/nature12608 · Cited by 1,241
Extreme Acoustic Metamaterial by Coiling Up Space
Liang, Z., & Li, J. (2012) · Physical Review Letters · doi:10.1103/physrevlett.108.114301 · Cited by 930
An elasto-mechanical unfeelability cloak made of pentamode metamaterials
Bückmann, T., Thiel, M., Kadic, M., Schittny, R., & Wegener, M. (2014) · Nature Communications · doi:10.1038/ncomms5130 · Cited by 623
Experimental Demonstration of a Bilayer Thermal Cloak
Han, T., Bai, X., Gao, D., Thong, J. T. L., Li, B., & Qiu, C.-W. (2014) · Physical Review Letters · doi:10.1103/physrevlett.112.054302 · Cited by 573
Ultrathin Three-Dimensional Thermal Cloak
Xu, H., Shi, X., Gao, F., Sun, H., & Zhang, B. (2014) · Physical Review Letters · doi:10.1103/physrevlett.112.054301 · Cited by 438
Metadata
- Authors
- Popa, B.-I., Zigoneanu, L., & Cummer, S. A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2011-06-22
- Volume
- 106
- Issue
- 25
- Pages
- 253901-253901
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2031006551
- Cited by
- 449
- References
- 0
- FWCI
- 19.14
- Type
- journal article
- Language
- en
- Open access
- closed
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- Popa, B.-I., Zigoneanu, L., & Cummer, S. A. (2011). Experimental Acoustic Ground Cloak in Air. Physical Review Letters. https://doi.org/10.1103/physrevlett.106.253901
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