Scattering cancellation by metamaterial cylindrical multilayers

S. Tricarico; F. Bilotti; L. Vegni

doi:10.2971/jeos.2009.09021

Journal of the European Optical Society - Rapid publications, Vol 4 (2009)

Scattering cancellation by metamaterial cylindrical multilayers

S. Tricarico, F. Bilotti, L. Vegni

Abstract

In this paper, we present the theoretical analysis and the design of cylindrical multilayered electromagnetic cloaks based on the scattering cancellation technique. We propose at first the analysis and the design of bi-layered cylindrical shells, made of homogenous and isotropic metamaterials, in order to effectively reduce the scattered field from a dielectric cylindrical object. The single shell and the bi-layered shell cases are compared in terms of scattering reduction and loss effects. The comparison shows that the bi-layered configuration exhibits superior performances. The scattering cancellation approach, is, then, extended to the case of generic multilayered cylindrical shells, considering again homogeneous and isotropic metamaterials. The employment of the proposed technique to the case of cloaking devices working at multiple frequencies is also envisaged and discussed. Finally, some practical layouts of cylindrical electromagnetic cloaks working at optical frequencies are also proposed. In these configurations, the homogenous and isotropic metamaterials are replaced by their actual counterparts, obtained using alternating stacked plasmonic and non-plasmonic layers. The theoretical formulation and the design approaches presented throughout the paper are validated through proper full-wave numerical simulations.

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References

G. W. Milton and N. A. Nicorovici, "On the cloaking effects associated with anomalous localized resonances" P. Roy. Soc. A-Math. Phy. 462, 3027-3059 (2006).

J. B. Pendry, D. Schurig, and D. R. Smith, "Controlling Electromagnetic Fields" Science 312, 1780 (2006).

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, "Metamaterial Electromagnetic Cloak at microwave frequencies" Science 314, 977 (2006).

U. Leonhardt, "Optical conformal mapping" Science 312, 1777-1780 (2006).

W. Cai, U. K. Chettiar, A. V. Kildishev, and V. M. Shalaev, "Optical cloaking with metamaterials" Nat. Photonics 1, 224-227 (2007).

Y. Luo, J. Zhang, B. Wu, and C. Hongsheng, "Interaction of an electromagnetic wave with a cone-shaped invisibility cloak and polarization rotator" Phys. Rev. B 78, 125108 (2008).

A. Al and N. Engheta, "Achieving transparency with plasmonic and metamaterial coatings" Phys. Rev. E 72, 016623 (2005).

A. Al and N. Engheta, "Plasmonic Materials in Transparency and Cloaking Problems: Mechanism, Robustness, and Physical Insights" Opt. Express 15, 3318 (2007).

A. Al and N. Engheta, "Cloaking and transparency for collections of particles with metamaterial and plasmonic covers" Opt. Express 15, 7578 (2007).

A. Al and N. Engheta, "Multifrequency Optical Invisibility Cloak with Layered Plasmonic Shells" Phys. Rev. Lett. 100, 113901 (2008).

F. Bilotti, S. Tricarico, and L. Vegni, Optical cloaking with metamaterials (Proc. of the EOS Topical Meeting on Nanophotonics, Photonic Crystals and Metamaterials 2008).

J. A. Stratton, Electromagnetic Theory (McGraw-Hill Comp., New York and London, 1941).

M. G. Silveirinha, A. Al, and N. Engheta, "Parallel Plate Metamaterials for Cloaking Structures" Phys. Rev. E 75, 036603 (2007).

C. A. Balanis, Advanced Electromagnetic Engineering (John Wiley & Sons Comp., Hoboken, 1989).