ABSTRACT
This chapter discusses some of the efforts to understand the behavior of metamaterials composed of split-ring resonators (SRRs) and wires, slab pairs, and slab pairs and wires and to arrive at conditions for the achievement of optimized Left-handed materials (LHMs), both the planar and two dimensional (2D) or three dimensional (3D), employing those structures. It examines the conditions to achieve LH behavior in combined systems of SRRs and wires. The chapter presents some considerations related to the presence of SRR asymmetries or with the resonant electric, dipole-like SRR response. SRRs have been widely studied and used up to now as magnetic elements. Apart from their magnetic response though, they also present a resonant electric-dipole-like response, such as all metallic systems that are finite along the external electric field direction.
