Hybrid metal-dielectric ring resonators for optical magnetic metamaterials down to ultraviolet range

TL;DR

This paper introduces a new hybrid metal-dielectric ring resonator design that extends the operational wavelength of magnetic metamaterials into the ultraviolet range by overcoming saturation issues of traditional split-ring resonators.

Contribution

We propose a novel split-hybrid metal-dielectric ring resonator model that enables ultraviolet-range magnetic metamaterials, overcoming saturation limitations of conventional split-ring resonators.

Findings

Model derived from Maxwell equations explains magnetic resonance.

Hybrid resonators operate effectively in ultraviolet range.

Overcomes saturation problem of traditional split-ring resonators.

Abstract

In this paper, we derive a model from Maxwell equations for the magnetic resonance of split-ring resonators. Using this model we revisit the scaling of split-ring resonators. Inspired by our model, we propose a new type of split-hybrid metal-dielectric ring resonator, of which the ring is made composed of moderately high index dielectric material (e.g. SiC, TiO2, ZnS) (for the major portion), while and metal (e.g. Ag) fills the gap. Such a new magnetic metamaterial is able to overcome the saturation problem of split-ring resonatorssaturation-free and therefore is able to operate at short wavelength down to ultraviolet range.