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A Superlens Based on Metal-Dielectric Composites

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arxiv cond-mat/0506628 v1 pith:NOOUGGN2 submitted 2005-06-24 cond-mat.mtrl-sci cond-mat.dis-nn

A Superlens Based on Metal-Dielectric Composites

Wenshan Cai , Dentcho A. Genov , Vladimir M. Shalaev This is my paper
classification cond-mat.mtrl-sci cond-mat.dis-nn
keywords superlensmetalmetal-dielectricoperateallowsanalysisappropriatebulk
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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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