Imperfect Cloaking Devices Based on Metamaterials

• Authors: G. Isić , R. Gajić , B. Novaković , Z. Popović , K. Hingerl
• Languages of publication: EN

Abstracts

EN

Cloaking devices designed using the coordinate transform approach were shown to be realizable, at least in principle, within the realm of electromagnetic metamaterials. In this paper we investigate the strictness of conditions imposed on the parameters of metamaterial cloaks by calculating the degree of wave scattering when those parameters have variations with respect to theoretically ideal values. A simple idea is used to obtain analytic results for the case of the nonideal two-dimensional cloaking cylinder. Also, results of realistic finite element simulations of the Helmholtz equation are presented and it is found that they are in excellent agreement with the analytic results.

Keywords

EN

41.20.Jb; 42.25.Fx; 78.20.Ci

Discipline

• 41.20.Jb: Electromagnetic wave propagation; radiowave propagation(for light propagation, see 42.25.Bs; for electromagnetic waves in plasma, see 52.35.Hr; for atmospheric, ionospheric, and magnetospheric propagation, see 92.60.Ta, 94.20.Bb, and 94.30.Tz, respectively; see also 94.05.Pt Wave/wave, wave/particle interactions, in space plasma physics)
• 42.25.Fx: Diffraction and scattering
• 78.20.Ci: Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 112
• Issue: 5
• Pages: 1083-1088

Dates

published

2007-11

received

2007-09-03

Contributors

author

G. Isić

• Institute of Physics, Pregrevica 118, P.O. Box 68, 11080 Belgrade, Serbia

author

R. Gajić

• Institute of Physics, Pregrevica 118, P.O. Box 68, 11080 Belgrade, Serbia

author

B. Novaković

• Institute of Physics, Pregrevica 118, P.O. Box 68, 11080 Belgrade, Serbia

author

Z. Popović

• Institute of Physics, Pregrevica 118, P.O. Box 68, 11080 Belgrade, Serbia

author

K. Hingerl

• Christian Doppler Labor, Institut für Halbleiter- und Festkörperphysik Universität Linz, A 69, 4040 Linz, Austria

References

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Identifiers

DOI

10.12693/APhysPolA.112.1083