Broadly tunable graphene plasmons using an ion-gel top gate with low control voltage.

@article{Hu2015BroadlyTG,
  title={Broadly tunable graphene plasmons using an ion-gel top gate with low control voltage.},
  author={Hai Hu and Feng Zhai and Debo Hu and Zhenjun Li and Bing Bai and Xiaoxia Yang and Qing Dai},
  journal={Nanoscale},
  year={2015},
  volume={7 46},
  pages={
          19493-500
        }
}
The electrostatic tunability of graphene is vital in the field of active plasmons and would be beneficial in tunable infrared and terahertz optical element applications. The key to realizing broad tunability is achieving high carrier densities in graphene. Here we use an ion-gel, currently one of the most efficient dielectrics with ultra-high capacitance, to realize broadly tunable graphene plasmons (∼1270 cm(-1)) with low voltage modulation (∼4 V shifted from the Dirac point). We further… 
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References

SHOWING 1-10 OF 52 REFERENCES
Tunable infrared plasmonic devices using graphene/insulator stacks.
TLDR
Transparent photonic devices based on graphene/insulator stacks, which are formed by depositing alternating wafer-scale graphene sheets and thin insulating layers, then patterning them together into photonic-crystal-like structures are demonstrated, showing experimentally that the plasmon in such stacks is unambiguously non-classical.
Plasmons in Graphene: Fundamental Properties and Potential Applications
TLDR
A critical review of the current knowledge of graphene plasmons properties (dispersion and linewidth) with particular emphasis on plasmonic losses and the competition between different decay channels, which are not yet fully understood.
Gated tunability and hybridization of localized plasmons in nanostructured graphene.
TLDR
Electrical tunability and hybridization of plasmons in graphene nanodisks and nanorings down to 3.7 μm light wavelength are demonstrated, showing evidence of an unexpected increase in plasmon lifetime with growing energy.
Graphene plasmonics for tunable terahertz metamaterials.
TLDR
It is demonstrated that graphene plasmon resonances can be tuned over a broad terahertz frequency range by changing micro-ribbon width and in situ electrostatic doping and the results represent a first look at light-plasmon coupling in graphene and point to potential graphene-based terAhertz metamaterials.
Graphene Plasmonics: Challenges and Opportunities
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,…
Tunable Plasmon–Phonon Polaritons in Layered Graphene–Hexagonal Boron Nitride Heterostructures
We use infrared spectroscopy to explore the hybridization of graphene plasmons and hexagonal boron nitride (hBN) phonons in their heterostructures with different compositions. We show that the degree…
Substrate phonon-mediated plasmon hybridization in coplanar graphene nanostructures for broadband plasmonic circuits.
TLDR
It is shown that the plasmon coupling is strongly mediated by the substrate phonons, and a scheme is proposed that uses a metal-dielectric heterostructure to prevent the overlap of plasmons between neighboring graphene nanoribbons.
Plasmons in graphene: Recent progress and applications
Graphene field-effect transistors as room-temperature terahertz detectors.
TLDR
Terahertz detectors based on antenna-coupled graphene field-effect transistors exploit the nonlinear response to the oscillating radiation field at the gate electrode, with contributions of thermoelectric and photoconductive origin are demonstrated.
Electrical modulation of fano resonance in plasmonic nanostructures using graphene.
TLDR
The use of Fano resonant elements enhances the interaction of incident radiation with the graphene sheet and enables efficient electrical modulation of the plasmonic resonance, and can be used for development of next generation of tunable plAsmonic and hybrid nanophotonic devices.
...
1
2
3
4
5
...