Graphene-coated holey metal films: tunable molecular sensing by surface plasmon resonance
arXiv:1304.3291 · doi:10.1063/1.4808095
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 1.5 microns. 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.
5 pages, 4 figures, Final version. Published in Applied Physics Letters
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- Probing graphene χ(2) using a gold photon sieve
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- Colloidal pattern replication through contact photolithography operated in a "Talbot-Fabry-Perot" regime