Showing papers by "John B. Pendry published in 2000"
TL;DR: The authors' simulations show that a version of the lens operating at the frequency of visible light can be realized in the form of a thin slab of silver, which resolves objects only a few nanometers across.
Abstract: Optical lenses have for centuries been one of scientists’ prime tools. Their operation is well understood on the basis of classical optics: curved surfaces focus light by virtue of the refractive index contrast. Equally their limitations are dictated by wave optics: no lens can focus light onto an area smaller than a square wavelength. What is there new to say other than to polish the lens more perfectly and to invent slightly better dielectrics? In this Letter I want to challenge the traditional limitation on lens performance and propose a class of “superlenses,” and to suggest a practical scheme for implementing such a lens. Let us look more closely at the reasons for limitation in performance. Consider an infinitesimal dipole of frequency v in front of a lens. The electric component of the field will be given by some 2D Fourier expansion,
10,974 citations
TL;DR: In this article, the authors present an updated version of ONYX program for calculating photonic band structures using a non-orthogonal finite difference time domain method, where both the electric and magnetic fields are placed onto a discrete lattice by approximating the spacial and temporal derivatives with finite differences.
50 citations
TL;DR: The concept of a refractive index is familiar to every physicist: wine glasses sparkle, deep pools appear shallow and camera lenses focus sharp images as discussed by the authors, and the concept of Snell's law relates the angles of incidence and refraction in materials with different refractive indices.
Abstract: The concept of a refractive index is familiar to every physicist: wine glasses sparkle, deep pools appear shallow and camera lenses focus sharp images. As every physics student knows, Snell's law relates the angles of incidence and refraction in materials with different refractive indices. However, my complacency was recently given a jolt by Sheldon Shultz, David Smith and co-workers at the University of California at San Diego who have made a material with a negative refractive index (D Smith et at. 2000 Phys. Rev. Lett. 84 4184).
11 citations
TL;DR: In this paper, an order-N scheme adapted to frequency-dependent dielectric functions from which they extract the eVective response of metallic structures was presented, which is the basis for this paper.
5 citations