Most metamaterial designs are based on the resonant response of either high permittivity or metallic particles embedded in a dielectric host (e.g. an array of metallic particles standing in air). As a consequence, the response of the material is typically narrowband, and this holds back many interesting applications. Here, we show that the key to achieve a broadband isotropic response may lie on a low-permittivity host with a plasmonic-type response. In particular, we demonstrate that a host medium with such characteristics may enable an effective permittivity eff and permeability μeff simultaneously negative in a frequency range that may be quite broad as compared to typical designs based on metallic particles standing in a dielectric host. It is shown that the proposed configuration is largely insensitive to disorder and that a slab of the metamaterial may mimic to some extent the Veselago-Pendry's superlens, enabling negative refraction and imaging with super-resolution. © 2011 American Physical Society.
CITATION STYLE
Costa, J. T., & Silveirinha, M. G. (2011). Mimicking the Veselago-Pendry lens with broadband matched double-negative metamaterials. Physical Review B - Condensed Matter and Materials Physics, 84(15). https://doi.org/10.1103/PhysRevB.84.155131
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