Superlens based on metal-dielectric composites

被引：153

作者：

Cai, WS ^{[1
]}

Genov, DA

Shalaev, VM

机构：

[1] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

[2] Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.72.193101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：4

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