Isotropic three-dimensional left-handed meta-materials

TL;DR

This paper explores the design and properties of isotropic three-dimensional left-handed meta-materials using symmetric multi-gap SRRs and crossing wires, demonstrating negative refraction with near-isotropic transmission.

Contribution

It introduces a fully symmetric 3D meta-material design that achieves near-isotropic negative index behavior using SRRs and crossing wires.

Findings

Demonstrates isotropic transmission in SRR-only meta-materials

Achieves negative effective index of refraction

Minor deviations from isotropy due to finite thickness

Abstract

We investigate three-dimensional left-handed and related meta-materials based on a fully symmetric multi-gap single-ring SRR design and crossing continuous wires. We demonstrate isotropic transmission properties of a SRR-only meta-material and the corresponding left-handed material which possesses a negative effective index of refraction due to simultaneously negative effective permeability and permittivity. Minor deviations from complete isotropy are due to the finite thickness of the meta-material.