Multifunction full space graphene assisted metasurface

TL;DR

This paper introduces a novel graphene-assisted reprogrammable metasurface capable of independently manipulating electromagnetic waves in both half-spaces at THz frequencies, overcoming previous limitations of single-mode operation.

Contribution

It presents the first metasurface design that can control EM waves in both reflection and transmission modes simultaneously using graphene, expanding the functionality of programmable metasurfaces.

Findings

First demonstration of dual-mode wavefront manipulation in metasurfaces

Effective operation in the THz frequency band

Enhanced spatial coverage for electromagnetic wave control

Abstract

In recent years, there has been notable advancement in programmable metasurfaces, primarily attributed to their cost-effectiveness and capacity to manipulate electromagnetic (EM) waves. Nevertheless, a significant limitation of numerous available metasurfaces is their capability to influence wavefronts only in reflection mode or transmission mode, thus catering to only half of the spatial coverage. To the best of our knowledge and for the first time, a novel graphene-assisted reprogrammable metasurface that offers the unprecedented capability to independently and concurrently manipulate EM waves within both half-spaces has been introduced in the THz frequency band.