title: Surface enhanced Raman scattering of silver sensitized cobalt nanoparticles in metal-dielectric nanocomposites.
abstract: We report the preparation of a new type of nanocomposite containing cobalt and silver nanoparticles organized in parallel layers with a well controlled separation. This arrangement allows the observation of an enhanced low-frequency Raman signal at the vibration frequency of cobalt nanoparticles excited through the surface plasmons of silver nanoparticles. Numerical simulations of the electric field confirm the emergence of hot spots when the separation between silver and cobalt nanoparticles is small enough.
authors.affiliation: Laser Processing Group, Instituto de Optica, CSIC, Serrano 121, 28006 Madrid, Spain. Centre d'Elaboration de Matériaux et d'Etudes Structurales CNRS/Université Paul Sabatier, 29, rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France.
authors.forename: J
authors.initials: J
authors.lastname: Margueritat
authors.forename: J
authors.initials: J
authors.lastname: Gonzalo
authors.forename: C N
authors.initials: CN
authors.lastname: Afonso
authors.forename: U
authors.initials: U
authors.lastname: Hörmann
authors.forename: G
authors.initials: G
authors.lastname: Van Tendeloo
authors.forename: A
authors.initials: A
authors.lastname: Mlayah
authors.forename: D B
authors.initials: DB
authors.lastname: Murray
authors.forename: L
authors.initials: L
authors.lastname: Saviot
authors.forename: Y
authors.initials: Y
authors.lastname: Zhou
authors.forename: M H
authors.initials: MH
authors.lastname: Hong
authors.forename: B S
authors.initials: BS
authors.lastname: Luk'yanchuk