Abstract
This chapter presents an overview of the scattering cancellation approach applied to acoustic waves, inspired by the use of plasmonic cloaks for electromagnetic waves. Using an analogous analytical approach, we show here that isotropic and homogeneous acoustic metamaterial covers may provide strong scattering reduction over moderately broad bandwidths of operation in a variety of acoustic scenarios of interest. This chapter outlines the basic physics of this approach, along with numerical examples for moderately sized elastic and fluid objects, thereby providing insights into the anomalous suppression of acoustic scattering produced by this cloaking technique.
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Acknowledgements
Funding for this work was provided by the Applied Research Laboratories, The University of Texas at Austin, through an Independent Research and Development grant. A. Alù was partially supported by the NSF CAREER award with grant No. ECCS-0953311.
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Haberman, M.R., Guild, M.D., Alù, A. (2013). Acoustic Cloaking with Plasmonic Shells. In: Craster, R., Guenneau, S. (eds) Acoustic Metamaterials. Springer Series in Materials Science, vol 166. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4813-2_10
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