A Superlens Based on Metal-Dielectric Composites

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 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.

15 pages, 4 figures

References in corpus (3)

• Limitations on Sub-Diffraction Imaging with a Negative Refractive Index Slab
• Imaging the Near Field
• Subwavelength imaging by a left-handed material superlens

Cited by in corpus (12)

• Directed sub-wavelength imaging using a layered metal-dielectric system
• Sub-wavelength imaging at optical frequencies using canalization regime
• Negative index metamaterial combining magnetic resonators with metal films
• Fractal plasmonic metamaterials for subwavelength imaging
• Electromagnetic tunneling through a single-negative slab paired with a double-positive bi-layer
• Analytical Study of Sub-Wavelength Imaging by Uniaxial Epsilon-Near-Zero Metamaterial Slabs
• Asynchronous Circuits as an Enabler of Scalable And Programmable Metasurfaces
• Bounds on quantum confinement effects in metal nanoparticles
• Perfect imaging in the optical domain using dielectric materials
• Gaussian Free Field in the iso-height random islands tuned by percolation model
• Gaussian Free Field in the background of correlated random clusters, formed by metallic nanoparticles
• Optimization of periodic composite structures for sub-wavelength focusing