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Terahertz and mid-infrared plasmons in three-dimensional nanoporous graphene

Author

Listed:
  • Fausto D’Apuzzo

    (Università di Roma La Sapienza
    Lawrence Berkeley National Laboratory)

  • Alba R. Piacenti

    (INFN and University of Rome La Sapienza)

  • Flavio Giorgianni

    (INFN and University of Rome La Sapienza)

  • Marta Autore

    (INFN and University of Rome La Sapienza)

  • Mariangela Cestelli Guidi

    (INFN-LNF)

  • Augusto Marcelli

    (INFN-LNF)

  • Ulrich Schade

    (Helmholtz-Zentrum Berlin fur Materialien und Energie GmbH, Methoden der Materialentwicklung)

  • Yoshikazu Ito

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • Mingwei Chen

    (WPI Advanced Institute for Materials Research, Tohoku University
    School of Materials Science and Engineering, Shanghai Jiao Tong University
    CREST, Japan Science and Technology Agency)

  • Stefano Lupi

    (University of Rome La Sapienza)

Abstract

Two-dimensional (2D) graphene emerged as an outstanding material for plasmonic and photonic applications due to its charge-density tunability, high electron mobility, optical transparency and mechanical flexibility. Recently, novel fabrication processes have realised a three-dimensional (3D) nanoporous configuration of high-quality monolayer graphene which provides a third dimension to this material. In this work, we investigate the optical behaviour of nanoporous graphene by means of terahertz and infrared spectroscopy. We reveal the presence of intrinsic 2D Dirac plasmons in 3D nanoporous graphene disclosing strong plasmonic absorptions tunable from terahertz to mid-infrared via controllable doping level and porosity. In the far-field the spectral width of these absorptions is large enough to cover most of the mid-Infrared fingerprint region with a single plasmon excitation. The enhanced surface area of nanoporous structures combined with their broad band plasmon absorption could pave the way for novel and competitive nanoporous-graphene based plasmonic-sensors.

Suggested Citation

  • Fausto D’Apuzzo & Alba R. Piacenti & Flavio Giorgianni & Marta Autore & Mariangela Cestelli Guidi & Augusto Marcelli & Ulrich Schade & Yoshikazu Ito & Mingwei Chen & Stefano Lupi, 2017. "Terahertz and mid-infrared plasmons in three-dimensional nanoporous graphene," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14885
    DOI: 10.1038/ncomms14885
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