Graphene-coated holey metal films: Tunable molecular sensing by surface plasmon resonance.

Reckinger, Nicolas;Vlad, Alexandru;Melinte, Sorin;Colomer, Jean-François;Sarrazin, Michaël
(2013) Applied Physics Letters — Vol. 102, n° 21, p. 211108 (2013)

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Authors
  • Reckinger, NicolasUnamur
    Author
  • Vlad, Alexandruorcid-logoUCLouvain
    Author
  • Melinte, SorinUCLouvain
    Author
  • Colomer, Jean-FrançoisUnamur
    Author
  • Sarrazin, MichaëlUnamur
    Author
Abstract
We report on the enhancement of surface plasmon resonances in a holey bidimensional grating of subwavelength size, drilled in a gold thin film coated by a graphene sheet. The enhancement originates from the coupling between charge carriers in graphene and gold surface plasmons. The main plasmon resonance peak is located around 1.5µm. A lower constraint on the gold-induced doping concentration of graphene is specified and the interest of this architecture for molecular sensing is also highlighted.
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Reckinger, N., Vlad, A., Melinte, S., Colomer, J.-F., & Sarrazin, M. (2013). Graphene-coated holey metal films: Tunable molecular sensing by surface plasmon resonance. Applied Physics Letters, 102(21), 211108. https://doi.org/10.1063/1.4808095 (Original work published 2013)