Artificial magnetism and left handed media from dielectric rings and rods

TL;DR

This paper demonstrates that dielectric rings and rods can create broadband artificial magnetism and isotropic left-handed metamaterials, offering an alternative to metallic components with potential for low detectability.

Contribution

It introduces dielectric-based structures for left-handed metamaterials, providing a low-loss, isotropic, and broadband alternative to metallic split ring resonators.

Findings

Dielectric rings produce large bandwidth artificial magnetism.

Dielectric rings combined with rods form 3D isotropic left-handed metamaterials.

Dielectric rings can be integrated with plasma-like media to achieve left-handed properties.

Abstract

It is shown that artificial magnetism with relatively large frequency bandwidth can be obtained from periodic arrangements of dielectric rings. Combined with dielectric rods, dielectric rings can provide 3D isotropic left-handed metamaterials being an advantageous alternative to metallic split ring resonators and/or metallic wires when un-detectability by low frequency external magnetic fields is desired. Furthermore it is shown that dielectric rings can be also combined with natural plasma-like media to obtain a left-handed metamaterial.