Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2974811
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Funding
- National Natural Science Foundation of China [10574071]
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The frequency response of the multilayered acoustic cloak made of isotropic materials is analyzed by the acoustic scattering theory. When concealing a rigid cylinder, the acoustic total scattering cross section (TSCS) monotonically increases with frequency. If concealing penetrable materials, the cloak-induced reverse-phase monopole and dipole resonances can increase the TSCS around the resonant frequencies, while the in-phase monopole resonance decreases the TSCS. The results are confirmed by numerical simulations of the finite element method. (c) 2008 American Institute of Physics.
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