Three-dimensional metamaterials with an ultra-high effective refractive index over broad bandwidth

TL;DR

This paper presents a novel design mechanism for three-dimensional isotropic metamaterials that achieve an ultra-high effective refractive index across a broad frequency spectrum, without relying on resonant components.

Contribution

It introduces a general, non-resonant design approach based on electrostatic and magnetostatic principles for creating broadband, high-index 3D metamaterials.

Findings

Achieves ultra-high refractive index over broad bandwidth

Provides nearly independent control of permittivity and permeability

Eliminates the need for resonant elements in design

Abstract

The authors introduce a general mechanism, based on electrostatic and magnetostatic considerations, for designing three-dimensional isotopic metamaterials that possess an enhanced refractive index over an extremely large frequency range. The mechanism allows nearly independent control of effective electric permittivity and magnetic permeability without the use of resonant elements.