title: Dispersion properties of nonradiating configurations: finite-difference time-domain modeling.
abstract: A finite-difference time-domain (FDTD) numerical analysis is used to demonstrate that a toroidal solenoid, coaxial with an electric dipole, is a remarkable nonradiating configuration. It can be used to measure the dielectric permittivity of any ambient matter. It becomes a directional radiator at an interface between two dielectric media, depositing energy in the material with the highest polarizability.
authors.affiliation: Photonics and Nonlinear Science Group, Joule Laboratory, Department of Physics, University of Salford, Salford M5 4WT, United Kingdom.
authors.forename: A D
authors.initials: AD
authors.lastname: Boardman
authors.forename: K
authors.initials: K
authors.lastname: Marinov
authors.forename: N
authors.initials: N
authors.lastname: Zheludev
authors.forename: V A
authors.initials: VA
authors.lastname: Fedotov