Surface-enhanced Raman spectroscopy of graphene

Fred Schedin, Elefterios Lidorikis, Antonio Lombardo, Vasyl G. Kravets, Andre K. Geim, Alexander N. Grigorenko, Kostya S. Novoselov, Andrea C. Ferrari

    Research output: Contribution to journalArticlepeer-review


    Surface-enhanced Raman scattering (SERS) exploits surface plasmons induced by the incident field in metallic nanostructures to significantly increase the Raman intensity. Graphene provides the ideal prototype two-dimensional (2d) test material to investigate SERS. Its Raman spectrum is well-known, graphene samples are entirely reproducible, height controllable down to the atomic scale, and can be made virtually defect-free. We report SERS from graphene, by depositing arrays of Au particles of well-defined dimensions on a graphene/SiO2 (300 nm)/Si system. We detect significant enhancements at 633 nm. To elucidate the physics of SERS, we develop a quantitative analytical and numerical theory. The 2d nature of graphene allows for a closed-form description of the Raman enhancement, in agreement with experiments. We show that this scales with the nanoparticle cross section, the fourth power of the Mie enhancement, and is inversely proportional to the tenth power of the separation between graphene and the center of the nanoparticle. One important consequence is that metallic nanodisks are an ideal embodiment for SERS in 2d. © 2010 American Chemical Society.
    Original languageEnglish
    Pages (from-to)5617-5626
    Number of pages9
    JournalACS Nano
    Issue number10
    Publication statusPublished - 26 Oct 2010


    • graphene
    • plasmonics
    • raman spectroscopy


    Dive into the research topics of 'Surface-enhanced Raman spectroscopy of graphene'. Together they form a unique fingerprint.

    Cite this