A graphene inspired electromagnetic superlens

TL;DR

This paper introduces a novel superlens design inspired by graphene's n-p-n junctions, enabling subwavelength imaging through resonant modes at interfaces, with practical realizations in electronic and photonic systems.

Contribution

It proposes a new superlens paradigm based on dislocation-induced boundary conditions in graphene-like structures, predicting perfect lensing for both propagating and evanescent waves.

Findings

Effective model predicts perfect lensing due to resonant modes.

Full wave simulations demonstrate photonic superlens performance.

Practical implementation discussed for electronic and photonic platforms.

Abstract

In this paper we propose a new paradigm to create superlenses inspired by n-p-n junctions of graphene. We show that by adjoining a n-type region and a p-type region with a crystal dislocation, it is possible to mimic the interaction of complementary Hamiltonians and achieve subwavelength imaging. We introduce an effective model of the system, and show that it predicts perfect lensing for both propagating and evanescent waves due to the excitation of a resonant mode at the interface between each region. This phenomenon is the consequence of a nontrivial boundary condition at the n-p interfaces due to a dislocation of the graphene "atoms". We discuss practical realizations of such superlenses in electronic and photonic platforms. Using full wave simulations, we study in detail the performance of a photonic realization of the lens based on a honeycomb array of dielectric cylinders embedded in a metal.