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Three-Dimensional Axisymmetric Cloak Based on the Cancellation of Acoustic Scattering from a Sphere
Open accessAbstract
This Letter presents the design, fabrication, and experimental characterization of a directional three-dimensional acoustic cloak for airborne sound. The cloak consists of 60 concentric acoustically rigid tori surrounding the cloaked object, a sphere of radius 4 cm. The major radii and positions of the tori along the symmetry axis are determined using the condition of complete cancellation of the acoustic field scattered from the sphere. They are obtained through an optimization technique that combines genetic algorithm and simulated annealing. The scattering cross section of the sphere with the cloak, which is the magnitude that is minimized, is calculated using the method of fundamental solutions. The low-loss fabricated cloak shows a reduction of the 90% of the sphere scattering cross section at the frequency of 8.55 kHz.
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Cited by
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
3D printed reversible shape changing components with stimuli responsive materials
Mao, Y., Ding, Z., Yuan, C., Ai, S., Isakov, M., Wu, J., Wang, T., Dunn, M. L., & Qi, H. J. (2016) · Scientific Reports · doi:10.1038/srep24761 · Cited by 348
Controllable transmission and total reflection through an impedance-matched acoustic metasurface
Mei, J., & Wu, Y. (2014) · New Journal of Physics · doi:10.1088/1367-2630/16/12/123007 · Cited by 259
Metadata
- Authors
- Sanchis, L., García-Chocano, V. M., Llopis-Pontiveros, R., Climente, A., Martínez-Pastor, J., Cervera, F., & Sánchez-Dehesa, J.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2013-03-20
- Volume
- 110
- Issue
- 12
- Pages
- 124301-124301
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2333629948
- Cited by
- 169
- References
- 0
- FWCI
- 11.87
- Type
- journal article
- Language
- en
- Open access
- green
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- Sanchis, L., García-Chocano, V. M., Llopis-Pontiveros, R., Climente, A., Martínez-Pastor, J., Cervera, F., & Sánchez-Dehesa, J. (2013). Three-Dimensional Axisymmetric Cloak Based on the Cancellation of Acoustic Scattering from a Sphere. Physical Review Letters. https://doi.org/10.1103/physrevlett.110.124301
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