Superlens based on metal-dielectric composites
- 1 November 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 72 (19) , 193101
- https://doi.org/10.1103/physrevb.72.193101
Abstract
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 paper, 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.Keywords
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