Physics – Condensed Matter – Materials Science
Scientific paper
2007-11-28
Physics
Condensed Matter
Materials Science
26 pages; under review
Scientific paper
10.1088/1367-2630/10/5/053011
In this work, we demonstrate that the interaction of electromagnetic waves with a microstructured material formed by metallic wires connected to a metallic surface can be described using homogenization methods provided an additional boundary condition is considered. The additional boundary condition is derived by taking into account the specific microstructure of the wire medium. To illustrate the application of the result, we characterize a substrate formed by an array of tilted metallic wires connected to a ground plane, demonstrating that in such configuration the wire medium behaves essentially as a material with extreme optical anisotropy and that in some circumstances the substrate can be seen as an impedance surface.
Costa Jorge R.
Fernandes Carlos A.
Silveirinha Mario G.
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