A Superlens Based on Metal-Dielectric Composites

Details A Superlens Based on Metal-Dielectric Composites A Superlens Based on Metal-Dielectric Composites

2005-06-24

arxiv.org/abs/cond-mat/0506628v1

Physical Review B 72, 193101 (2005)

Physics

Condensed Matter

Materials Science

15 pages, 4 figures

Scientific paper

10.1103/PhysRevB.72.193101

Pure noble metals are typically considered to be the materials of choice for a near-field superlens that allows subwavelength resolution by recovering both propagating and evanescent waves. However, a superlens based on bulk metal can operate only at a single frequency for a given dielectric host. In this Letter, it is shown that a composite metal-dielectric film, with an appropriate metal filling factor, can operate at practically any desired wavelength in the visible and near-infrared ranges. Theoretical analysis and simulations verify the feasibility of the proposed lens.

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