Abstract
In recent years, cloaking using materials with negative electric permittivity or magnetic permeability has been studied and researched. It has been demonstrated that covering an object with a cloak having an electric permittivity or magnetic permeability that is negative or less than unity can cause a reduction of the scattering cross-section (SCS) of the object. In this paper, we solve the scattering problem for an object with a single- or multilayer cylindrical cloak and thus obtain the fundamental equations necessary to design such cloaks under two conditions, viz. with and without consideration of the effects of coupling when solving the scattering problem. Using the obtained equations we demonstrate that this technique can indeed reduce the visibility of the object.
Highlights
Human interest in becoming invisible can be found from many years ago in stories of different nations
It has been demonstrated that covering an object with a cloak that has negative electric permittivity or magnetic permeability or less than one can cause a reduction of the scattering cross section (SCS) of the object
In this method which is based on the scattering cancellation method and is called as “Plasmonic Cloaking” invisibility is obtained utilizing materials with the electric permittivity or magnetic permeability less than one or negative
Summary
Human interest in becoming invisible can be found from many years ago in stories of different nations. In 2005, Engheta and Alú, have presented a new technique in a paper titled “Achieving Transparency with Plasmonic and Metamaterial Coatings” which is realizable in practice because of using isotropic and homogeneous materials [11]. In this method which is based on the scattering cancellation method and is called as “Plasmonic Cloaking” invisibility is obtained utilizing materials with the electric permittivity or magnetic permeability less than one or negative.
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