Enhanced gold film-coupled graphene-based plasmonic nanosensor

Rana Nicolas (1) , Thomas Maurer (1) , Gaëtan Lévêque (2) , Palan Subramanian , Julien Proust (1) , Jérémie Béal (1) , Silvere Schuermans (1) , Jean-Pierre Vilcot (3) , Ziad Herro (4) , Michel Kazan (5) , Jerome Plain (1) , Rabah Boukherroub (3) , Abdellatif Akjouj (3) , Bahram Djafari-Rouhani (3) , Pierre-Michel Adam (1) , Sabine Szunerits (6)

1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
2 EPFL - Ecole Polytechnique Fédérale de Lausanne
3 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
4 PR2N - Plateforme de Recherche en NanoSciences et NanoTechnologie
5 AUB - American University of Beirut [Beyrouth]
6 IRI - Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq]

Graphene has been extensively studied due to its various extraordinary properties. We investigate how the coupling of Au nanoparticle (NP) gratings to 50 nm thick Au film may affect the Localized Surface Plasmon Resonance (LSPR) of the Au NPs both in the absence and presence of trilayer graphene. The presence of graphene induced a blue shift in the LSP mode exhibited by the two samples at low wavelength (507nm and 520 nm). The sharpness and nature of this mode encouraged us to do sensitivity measurements, were we recorded a FOM of 2.1 for the Au film sample and 2.8 for the graphene_coated Au film.

Domains: Optics / Photonic

Rana Nicolas, Thomas Maurer, Gaëtan Lévêque, Palan Subramanian, Julien Proust, et al.. Enhanced gold film-coupled graphene-based plasmonic nanosensor. Summer School of Plasmonics (SSOP) 2013, Cargese, 28 juillet-2 août 2013, Jul 2013, Cargese, France. ⟨hal-02460074⟩