Radiative modulator based on Moiré hybridization with elliptic plasmons

Abstract

Periodic variations in the alignment between two layers can lead to the formation of a Moiré pattern, which causes many unusual phenomena associated with Moiré physics. We propose a theoretical model for near-field radiative heat transfer (NFRHT) between two Moiré superlattices that are mirror images of each other. Each Moiré superlattice is composed of two strain-induced graphene sheets with a twisted angle φi between them. We find that as the twisted angle increases, the plasmon hybridization effect effectively changes the shape and intensity of the surface states, which modulates and enhances the NFRHT between them. Our results not only provide insight into the NFRHT induced by the Moiré hybridization of elliptic plasmons but also look forward to applications in dynamic thermal management at the nanoscale.