Experimental demonstration of graphene plasmons working close to the near-infrared window

TL;DR

This paper demonstrates the experimental realization of graphene plasmons operating near 2 micrometers wavelength, advancing their applicability in the near-infrared region through scalable nanofabrication techniques.

Contribution

It introduces a scalable self-assembly method to support localized graphene plasmons at near-infrared wavelengths, bridging a gap in existing plasmonic research.

Findings

Graphene plasmons achieved at 2 μm wavelength.

Use of scalable block copolymer self-assembly.

Potential for near-infrared applications.

Abstract

Due to strong mode-confinement, long propagation-distance, and unique tunability, graphene plasmons have been widely explored in the mid-infrared and terahertz windows. However, it remains a big challenge to push graphene plasmons to shorter wavelengths in order to integrate graphene plasmon concepts with existing mature technologies in the near-infrared region. We investigate localized graphene plasmons supported by graphene nanodisks and experimentally demonstrated graphene plasmon working at 2 {\mu}m with the aid of a fully scalable block copolymer self-assembly method. Our results show a promising way to promote graphene plasmons for both fundamental studies and potential applications in the near-infrared window.