Design of double-negative metamaterials using single-layer plasmonic structures

TL;DR

This paper presents a novel design for optical-frequency double-negative metamaterials using a single-layer plasmonic structure with modulated inclusions, enabling negative permittivity and permeability through higher-order resonances.

Contribution

It introduces a simple, low-loss method to create optical double-negative metamaterials with a single-layer design and engineered plasmonic resonances.

Findings

Effective negative permittivity and permeability achieved.

Design simplifies fabrication of optical DNMs.

Potential for low-loss optical metamaterials.

Abstract

We propose a design for optical-frequency double-negative metamaterials (DMNs) in which the unit cell is formed by a single-layer plasmonic inclusion. By introducing some properly arranged stepwise modulations onto the inclusions, the effective permittivity and permeability of the material may become simultaneously negative due to the excitation of higher-order multipole plamonic (electrostatic) resonances. The approach opens a possibility to construct low-loss optical DNMs with great engineering simplicity.