Creating double negative index materials using the Babinet principle with one metasurface

TL;DR

This paper introduces a novel planar metamaterial design using the Babinet principle to achieve double negative index materials with a single metasurface, enabling strong transmission at various wavelengths.

Contribution

A new design method for creating double negative index metamaterials using a single metasurface based on Babinet principle, simplifying fabrication and enhancing transmission.

Findings

Achieves double negative index with one metasurface

Enables fabrication at microwave and optical wavelengths

Provides strong electromagnetic transmission

Abstract

Metamaterials are patterned metallic structures which permit access to a novel electromagnetic response, negative index of refraction, impossible to achieve with naturally occurring materials. Using the Babinet principle, the complementary split ring resonator (SRR) is etched in a metallic plate to provide negative \epsilon, with perpendicular direction. Here we propose a new design, etched in a metallic plate to provide negative magnetic permeability \mu, with perpendicular direction. The combined electromagnetic response of this planar metamaterial, where the negative \mu comes from the aperture and the negative \epsilon from the remainder of the continuous metallic plate, allows achievement of a double negative index metamaterial (NIM) with only one metasurface and strong transmission. These designs can be used to fabricate NIMs at microwave and optical wavelengths and three-dimensional metamaterials.