title: Impact of the excitation source and plasmonic material on cylindrical active coated nano-particles.
abstract: Electromagnetic properties of cylindrical active coated nano-particles comprised of a silica nano-cylinder core layered with a plasmonic concentric nano-shell are investigated for potential nano-sensor applications. Particular attention is devoted to the near-field properties of these particles, as well as to their far-field radiation characteristics, in the presence of an electric or a magnetic line source. A constant frequency canonical gain model is used to account for the gain introduced in the dielectric part of the nano-particle, whereas three different plasmonic materials (silver, gold, and copper) are employed and compared for the nano-shell layers.
authors.affiliation: Department of Electrical Engineering, Electromagnetic Systems, Technical University of Denmark, Ørsteds Plads, Bldg. 348, Kgs. Lyngby DK-2800, Denmark. sar@elektro.dtu.dk
authors.forename: Samel
authors.initials: S
authors.lastname: Arslanagic
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Radu
authors.initials: R
authors.lastname: Malureanu
authors.forename: Richard W
authors.initials: RW
authors.lastname: Ziolkowski
mesh_terms: D004574:Electromagnetic Fields; D053758:Nanoparticles