Controlling electromagnetic fields.
Using the freedom of design that metamaterials provide, we show how electromagnetic fields can be redirected at will and propose a design strategy. The conserved fields-electric displacement field D, magnetic induction field B, and Poynting vector B-are all displaced in a consistent manner. A simple illustration is given of the cloaking of a proscribed volume of space to exclude completely all electromagnetic fields. Our work has relevance to exotic lens design and to the cloaking of objects from electromagnetic fields.
Pendry
J B
JB
Department of Physics, Blackett Laboratory, Imperial College London, London SW7 2AZ, UK. j.pendry@imperial.ac.uk
Schurig
D
D
Smith
D R
DR