Electrodynamic models of thin-layer metamaterials and devices based on such metamaterials

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Results of studies in the theory and applications of thin-layer metamaterials are presented. The studies involve modeling and realization of superresolution devices. It is found that rigorous electrodynamic models that are not based on homogenization of composites should be preferred in modeling devices with metamaterials. Differences between a real composite and a hypothetic homogeneous metasubstance are revealed. The conclusion that loss in a metamaterial can be compensated with the help of active insertions is drawn. The directions of further research are indicated.