| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Extraordinary Resonant Scattering in Imperfect Acoustic Cloak |
CHENG Ying, LIU Xiao-Jun
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| Key Lab of Modern Acoustics of MOE, Nanjing University, Nanjing 210093 |
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| Cite this article: |
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CHENG Ying, LIU Xiao-Jun 2009 Chin. Phys. Lett. 26 014301 |
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Abstract We present a systematic study on the extraordinary resonant scattering in imperfect acoustic cloak by means of acoustic scattering theory. Analysis results demonstrate that the resonances are inevitable due to the perturbation to the ideal cloak, and specific resonance modes are excited by specific order waves. The strength of resonance is determined by the magnitude of perturbation and each order wave's sensitivity to the perturbation. Further studies reveal the unique scattering characters of different resonance modes.
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| Keywords:
43.35.+d
43.20.+g
42.25.Fx
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Received: 02 July 2008
Published: 24 December 2008
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| PACS: |
43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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43.20.+g
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(General linear acoustics)
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42.25.Fx
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(Diffraction and scattering)
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