Invisibility of a metamaterial cloak illuminated by spherical electromagnetic wave Authors
First Online: 27 January 2009 Received: 25 August 2008 Accepted: 06 January 2009 DOI:
Cite this article as: Meng, F., Liang, Y., Wu, Q. et al. Appl. Phys. A (2009) 95: 881. doi:10.1007/s00339-009-5092-7 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 References
J.B. Pendry, D. Schurig, D.R. Smith, Controlling electromagnetic fields. Science
, 1780–1782 (2006)
CrossRef ADS MathSciNet
H. Chen, C.T. Chan, Acoustic cloaking in three dimensions using acoustic metamaterials. Appl. Phys. Lett.
, 183518 (2007)
A. Greenleaf, Y. Kurylev, M. Lassas, G. Uhlmann, Improvement of cylindrical cloaking with the SHS lining. Opt. Express
, 12717–12734 (2007)
O. Ozgun, M. Kuzuoglu, Electromagnetic metamorphosis: Reshaping scatterers via conformal anisotropic metamaterial coatings. Microw. Opt. Technol. Lett.
, 2386–2392 (2007)
Y. Huang, Y. Feng, T. Jiang, Electromagnetic cloaking by layered structure of homogeneous isotropic materials. Opt. Express
, 11133–11141 (2007)
H. Chen, B.-I. Wu, B. Zhang, J.A. Kong, Electromagnetic wave interactions with a metamaterial cloak. Phys. Rev. Lett.
, 063903 (2007)
F.L. Teixeira, Differential form approach to the analysis of electromagnetic cloaking and masking. Microw. Opt. Technol. Lett.
, 2051–2053 (2007)
A. Alu, N. Engheta, Cloaking and transparency for collections of particles with metamaterial and plasmonic covers. Opt. Express
, 7578–7590 (2007)
A. Hakansson, Cloaking of objects from electromagnetic fields by inverse design of scattering optical elements. Opt. Express
, 4328–4334 (2007)
A. Alu, N. Engheta, Plasmonic materials in transparency and cloaking problems: mechanism, robustness, and physical insights. Opt. Express
, 3318–3332 (2007)
M.G. Silveirinha, A. Alu, N. Engheta, Parallel-plate metamaterials for cloaking structures. Phys. Rev. E, Stat. Nonlinear Soft Matter Phys.
, 036603 (2007)
S.A. Cummer, B.-I. Popa, D. Schurig, D.R. Smith, Full-wave simulations of electromagnetic cloaking structures. Phys. Rev. E
, 036621 (2006)
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
, 977–980 (2006)
U. Leonhardt, Optical conformal mapping. Science
, 1777–1780 (2006)
CrossRef ADS MathSciNet
U. Leonhardt, Notes on conformal invisibility devices. New J. Phys.
, 118 (2006)
A. Hendi, J. Henn, U. Leonhardt, Ambiguities in the scattering tomography for central potentials. Phys. Rev. Lett.
, 073902 (2006)