Near field imaging with negative dielectric constant lenses

作者：J. T. Shen, P. M. Platzman · 发表于：Applied Physics Letters · 年份：2002 · DOI：10.1063/1.1471933 · 被引用次数：110 · 研究领域：Metamaterials and Metasurfaces Applications、Plasmonic and Surface Plasmon Research、Advanced Antenna and Metasurface Technologies

A recent analysis by Pendry [J. B. Pendry, Phys. Rev. Lett. 85, 3966 (2000)] shows that a dielectric slab with a dielectric constant ε=−1 can produce a perfect image in the electrostatic limit (c→∞), independent of the permeability μ, and therefore is a perfect lens. Here we include retardation effects and show how distance and dissipation make the lens no longer perfect. Nevertheless we conclude that very significant improvements over conventional near field imaging may be obtained in the microwave regime.