Applied Physics A

, Volume 95, Issue 3, pp 881–888

Invisibility of a metamaterial cloak illuminated by spherical electromagnetic wave

Article

Abstract

In this paper, the invisibility of a metamaterial cloak illuminated by spherical electromagnetic wave is analytically investigated based on the full wave Mie scattering model. It is shown that for a cloak with ideal parameters the scattered field intensity is zero, but for a cloak with a loss, only the backscattering is exactly zero. Moreover, in the loss case, the scattered field intensity increases as the loss increases, which is very different from that in the conventional stealth case, where the scattered field intensity decreases as the loss of coated material increases. In addition, it is shown that scattering cross-section of the cloak with perturbed parameters decreases as the thickness of the cloak decreases, which means that thinner cloak can exhibit more stable invisibility.

PACS

78.70.Gq 81.05.Zx 84.40.Ba 

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References

  1. 1.
    J.B. Pendry, D. Schurig, D.R. Smith, Controlling electromagnetic fields. Science 312, 1780–1782 (2006) CrossRefADSMathSciNetGoogle Scholar
  2. 2.
    H. Chen, C.T. Chan, Acoustic cloaking in three dimensions using acoustic metamaterials. Appl. Phys. Lett. 91, 183518 (2007) CrossRefADSGoogle Scholar
  3. 3.
    A. Greenleaf, Y. Kurylev, M. Lassas, G. Uhlmann, Improvement of cylindrical cloaking with the SHS lining. Opt. Express 15, 12717–12734 (2007) CrossRefADSGoogle Scholar
  4. 4.
    O. Ozgun, M. Kuzuoglu, Electromagnetic metamorphosis: Reshaping scatterers via conformal anisotropic metamaterial coatings. Microw. Opt. Technol. Lett. 49, 2386–2392 (2007) CrossRefGoogle Scholar
  5. 5.
    Y. Huang, Y. Feng, T. Jiang, Electromagnetic cloaking by layered structure of homogeneous isotropic materials. Opt. Express 15, 11133–11141 (2007) CrossRefADSGoogle Scholar
  6. 6.
    H. Chen, B.-I. Wu, B. Zhang, J.A. Kong, Electromagnetic wave interactions with a metamaterial cloak. Phys. Rev. Lett. 99, 063903 (2007) CrossRefADSGoogle Scholar
  7. 7.
    F.L. Teixeira, Differential form approach to the analysis of electromagnetic cloaking and masking. Microw. Opt. Technol. Lett. 49, 2051–2053 (2007) CrossRefGoogle Scholar
  8. 8.
    A. Alu, N. Engheta, Cloaking and transparency for collections of particles with metamaterial and plasmonic covers. Opt. Express 15, 7578–7590 (2007) CrossRefADSGoogle Scholar
  9. 9.
    A. Hakansson, Cloaking of objects from electromagnetic fields by inverse design of scattering optical elements. Opt. Express 15, 4328–4334 (2007) CrossRefADSGoogle Scholar
  10. 10.
    A. Alu, N. Engheta, Plasmonic materials in transparency and cloaking problems: mechanism, robustness, and physical insights. Opt. Express 15, 3318–3332 (2007) CrossRefADSGoogle Scholar
  11. 11.
    M.G. Silveirinha, A. Alu, N. Engheta, Parallel-plate metamaterials for cloaking structures. Phys. Rev. E, Stat. Nonlinear Soft Matter Phys. 75, 036603 (2007) ADSGoogle Scholar
  12. 12.
    S.A. Cummer, B.-I. Popa, D. Schurig, D.R. Smith, Full-wave simulations of electromagnetic cloaking structures. Phys. Rev. E 74, 036621 (2006) CrossRefADSGoogle Scholar
  13. 13.
    D. Schurig, J.J. Mock, B.J. Justice, S.A. Cummer, J.B. Pendry, A.F. Starr, D.R. Smith, Metamaterial electromagnetic cloak at microwave frequencies. Science 314, 977–980 (2006) CrossRefADSGoogle Scholar
  14. 14.
    U. Leonhardt, Optical conformal mapping. Science 312, 1777–1780 (2006) CrossRefADSMathSciNetGoogle Scholar
  15. 15.
    U. Leonhardt, Notes on conformal invisibility devices. New J. Phys. 8, 118 (2006) CrossRefADSGoogle Scholar
  16. 16.
    A. Hendi, J. Henn, U. Leonhardt, Ambiguities in the scattering tomography for central potentials. Phys. Rev. Lett. 97, 073902 (2006) CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.School of Electronics and Information TechnologyHarbin Institute of Technology (HIT)Nangang District, HarbinP.R. China
  2. 2.Department of Electrical & Computer EngineeringNational University of SingaporeKent Ridge, SingaporeSingapore

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