title: Imaging performance of an isotropic negative dielectric constant slab.
abstract: The influence of material and thickness on the subwavelength imaging performance of a negative dielectric constant slab is studied. Resonance in the plane-wave transfer function produces a high spatial frequency ripple that could be useful in fabricating periodic structures. A cost function based on the plane-wave transfer function provides a useful metric to evaluate the planar slab lens performance, and using this, the optimal slab dielectric constant can be determined.
authors.affiliation: School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907-2035, USA.
authors.lastname: Shivanand
authors.forename: Huikan
authors.initials: H
authors.lastname: Liu
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Webb