Example image of eyePlorer eyePlorer map for 'Superlens': Diffraction-limited system Lens Optical microscope Metamaterial Near field Optical resolution Wave propagation Evanescent wave Image Dimension Electron beam lithography Ion Photolithography Planar X-ray lithography Nm Image resolution John Pendry Lens (optics) Light Negative index metamaterials Refractive index Silver Phase (waves) Exponential function Amplification Nanometre Optic Pendry Research Evanescent Focal point Absorption (electromagnetic radiation) Dispersive Transmission medium Finite-difference time-domain method Concept Finite Dispersion Microwave Negative refraction Viability Electromagnetic radiation Evidence Experiment Near and far field Permeability Permittivity Split-ring resonator Wave