title: Surface plasmon resonance properties of single elongated nano-objects: gold nanobipyramids and nanorods.
abstract: The spectral characteristics (wavelength and line width) and the optical extinction cross-section of the longitudinal localized surface plasmon resonance (LSPR) of individual gold nanobipyramids have been quantitatively measured using the spatial modulation spectroscopy technique. The morphology of the same individual nanoparticles has been determined by transmission electron microscopy (TEM). The experimental results are thus interpreted with a numerical model using the TEM measured sizes of the particles as an input, and either including the substrate or assuming a mean homogeneous environment. Results are compared to those obtained for individual nanorods and also show the importance of the local environment of the particle on the detailed description of its spectral position and extinction amplitude.
authors.affiliation: FemtoNanoOptics group, LASIM, Université Lyon 1-CNRS, 43 Boulevard du 11 Novembre, 69622 Villeurbanne, France.
authors.forename: Anna
authors.initials: A
authors.lastname: Lombardi
authors.forename: Matthieu
authors.initials: M
authors.lastname: Loumaigne
authors.forename: Aurélien
authors.initials: A
authors.lastname: Crut
authors.forename: Paolo
authors.initials: P
authors.lastname: Maioli
authors.forename: Natalia
authors.initials: N
authors.lastname: Del Fatti
authors.forename: Fabrice
authors.initials: F
authors.lastname: Vallée
authors.forename: Miguel
authors.initials: M
authors.lastname: Spuch-Calvar
authors.forename: Julien
authors.initials: J
authors.lastname: Burgin
authors.forename: Jérome
authors.initials: J
authors.lastname: Majimel
authors.forename: Mona
authors.initials: M
authors.lastname: Tréguer-Delapierre
mesh_terms: D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D010316:Particle Size; D020349:Surface Plasmon Resonance; D013499:Surface Properties
chemical_list: D006046:Gold