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We propose a superlens formed by an ultra-dense array of crossed metallicwires. It is demonstrated that due to the anomalous interaction between crossedwires, the structured substrate is characterized by an anomalously high indexof refraction and supports strongly confined guided modes with very shortpropagation wavelengths. It is theoretically proven that a planar slab of suchstructured material makes a superlens that may compensate for the attenuationintroduced by free-space propagation and restore the subwavelength details ofthe source. The bandwidth of the proposed device can be quite significant sincethe response of the structured substrate is non-resonant. The theoreticalresults are fully supported by numerical simulations.

Superlens made of a metamaterial with extreme effective parameters