title: Deep ultraviolet plasmon resonance in aluminum nanoparticle arrays.
abstract: Small aluminum nanoparticles have the potential to exhibit localized surface plasmon resonances in the deep ultraviolet region of the electromagnetic spectrum, however technical and scientific challenges make it difficult to attain this limit. We report the fabrication of arrays of Al/Al2O3 core/shell nanoparticles with a metallic-core diameter between 12 and 25 nm that display sharp plasmonic resonances at very high energies, up to 5.8 eV (down to λ = 215 nm). The arrays were fabricated by means of a straightforward self-organization approach. The experimental spectra were compared with theoretical calculations that allow the correlation of each feature to the corresponding plasmon modes.
authors.affiliation: CNISM, Sede Consorziata di Genova and Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, I-16146 Genova, Italy.
authors.forename: Giulia
authors.initials: G
authors.lastname: Maidecchi
authors.forename: Grazia
authors.initials: G
authors.lastname: Gonella
authors.forename: Remo
authors.initials: R
authors.lastname: Proietti Zaccaria
authors.forename: Riccardo
authors.initials: R
authors.lastname: Moroni
authors.forename: Luca
authors.initials: L
authors.lastname: Anghinolfi
authors.forename: Angelo
authors.initials: A
authors.lastname: Giglia
authors.forename: Stefano
authors.initials: S
authors.lastname: Nannarone
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Mattera
authors.forename: Hai-Lung
authors.initials: HL
authors.lastname: Dai
authors.forename: Maurizio
authors.initials: M
authors.lastname: Canepa
authors.forename: Francesco
authors.initials: F
authors.lastname: Bisio
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D000537:Aluminum Oxide / Q000737:chemistry*; D003198:Computer Simulation; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D008956:Models, Chemical; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D014466:Ultraviolet Rays
chemical_list: D000535:Aluminum; D000537:Aluminum Oxide