Large-area nanoengineering of graphene corrugations for visible-frequency graphene plasmons
arXiv:2201.07564 · doi:10.1038/s41565-021-01007-x
Abstract
Quantum confinement of graphene carriers is an effective way to engineer its properties. It is commonly realized through physical edges that are associated with the deterioration of mobility and strong suppression of plasmon resonances. Here, we demonstrate a simple, large-area, edge-free nanostructuring technique, based on amplifying random nanoscale structural corrugations to a level where they efficiently confine carriers, without inducing significant inter-valley scattering. This soft confinement, allows the low-loss lateral ultra-confinement of graphene plasmons, scaling up their resonance frequency from native terahertz to commercially relevant visible range. Visible graphene plasmons localized into nanocorrugations mediate several orders of magnitude stronger light-matter interactions (Raman enhancement) than those previously achieved with graphene, enabling the detection of specific molecules from femtomolar solutions or ambient air. Moreover, nanocorrugated graphene sheets also support propagating visible plasmon modes revealed by scanning near-field optical microscopy observation of their interference patterns.
References in corpus (26)
- The SIESTA method for ab initio order-N materials simulation
- Efficient index handling of multidimensional periodic boundary conditions
- Energy Band Gap Engineering of Graphene Nanoribbons
- Graphene plasmonics
- Graphene plasmonics: A platform for strong light-matter interaction
- Gate-tuning of graphene plasmons revealed by infrared nano-imaging
- Optical nano-imaging of gate-tuneable graphene plasmons
- Ripple Texturing of Suspended Graphene Atomic Membranes
- Andreev reflection and Klein tunneling in graphene
- Graphene Plasmonics: Challenges and Opportunities
- Ultra-strong Adhesion of Graphene Membranes
- Mid-infrared plasmons in scaled graphene nanostructures
- Room temperature magnetic order on zigzag edges of narrow graphene nanoribbons
- Intrinsic and extrinsic corrugation of monolayer graphene deposited on SiO2
- Breakdown of continuum mechanics for nanometer-wavelength rippling of graphene
- Imaging electrostatically confined Dirac fermions in graphene quantum dots
- Creating and Probing Electron Whispering Gallery Modes in Graphene
- Linear density response function in the projector-augmented wave method: Applications to solids, surfaces, and interfaces
- Impact of Size Effect on Graphene Nanoribbon Transport
- Pseudospin and Deformation-induced Gauge Field in Graphene
- Gaussian deformations in graphene ribbons: flowers and confinement
- Quantum Wires and Waveguides Formed in Graphene by Strain
- Localization and circulating currents in curved graphene devices
- Quantum confinement of Dirac quasiparticles in graphene patterned with subnanometer precision
- Plasmons in disordered nanoparticle chains: Localization and Transport
- Large intravalley scattering due to pseudo-magnetic fields in crumpled graphene