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Cited by 1,254

The DOI matches its Crossref record; 115 of the 115 references it cites were found in a registry or an index.

Graphene Plasmonics: Challenges and Opportunities

Open access
García de Abajo, F. Javier·2014·ACS Photonics
DOI 10.1021/ph400147y
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Abstract

Graphene plasmons are rapidly emerging as a viable tool for fast electrical manipulation of light. The prospects for applications to electro-optical modulation, optical sensing, quantum plasmonics, light harvesting, spectral photometry, and tunable lighting at the nanoscale are further stimulated by the relatively low level of losses and high degree of spatial confinement that characterize these excitations compared with conventional plasmonic materials, alongside the large nonlinear response of graphene. We start with a general description of the plasmonic behavior of extended graphene, followed by analytical methods that lead to reasonably accurate estimates of both the plasmon energies and the strengths of coupling to external light in graphene nanostructures, including graphene ribbons. Although graphene plasmons have so far been observed at mid-infrared and longer wavelengths, there are several possible strategies to extend them toward the visible and near-infrared, including a reduction in the size of the graphene structures and an increase in the level of doping. Specifically, we discuss plasmons in narrow ribbons and molecular-size graphene structures. We further formulate prescriptions based on geometry to increase the level of electrostatic doping without causing electrical breakdown. Results are also presented for plasmons in highly-doped single-wall carbon nanotubes, which exhibit similar characteristics as narrow ribbons and show a relatively small dependence on the chirality of the tubes. We further discuss perfect light absorption by a single-atom carbon layer, which we illustrate by investigating arrays of ribbons using fully analytical expressions. Finally, we explore the possibility of exploiting optically pumped transient plasmons in graphene, whereby the optically heated graphene valence band can sustain collective plasmon oscillations similar to those of highly doped graphene, and well-defined during the picosecond time window over which the electron is at an elevated temperature. In brief, we discuss a number of exciting possibilities to extend graphene plasmons toward the visible and near-infrared spectral regions and toward the ultrafast time domain, thus configuring a vast range of possibilities for fundamental studies and technological applications.

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Metadata

Authors
García de Abajo, F. J.
Venue
ACS Photonics
Publisher
American Chemical Society (ACS)
Published
2014-02-11
Volume
1
Issue
3
Pages
135-152
ISSN
2330-4022 (ISSN-L)
DOI
10.1021/ph400147y
OpenAlex
W1970502126
Cited by
1,254
References
115
FWCI
69.36
Type
journal article
Language
en
Open access
green

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