Ideal and nonideal electromagnetic cloaks
Nina A. Zharova, Ilya V. Shadrivov, Alexander A. Zharov, and Yuri S., Kivshar
TL;DR
This paper analyzes the electromagnetic field structures in invisibility cloaks, beam splitters, and concentrators using analytical spatial transformations, focusing on the effects of nonidealities and scattering losses on cloak performance.
Contribution
It provides explicit analytical expressions for electromagnetic fields in various cloaking devices and investigates how nonidealities and scattering losses impact their invisibility performance.
Findings
Nonideal cloaks exhibit reduced invisibility due to scattering losses.
Explicit analytical expressions for electromagnetic fields in cloaks are derived.
Scattering losses significantly affect cloak efficiency.
Abstract
We employ the analytical results for the spatial transformation of the electromagnetic fields to obtain and analyze explicit expressions for the structure of the electromagnetic fields in invisibility cloaks, beam splitters, and field concentrators. We study the efficiency of nonideal electromagnetic cloaks and discuss the effect of scattering losses on the cloak invisibility.
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