title: Control of surface plasmon localization via self-assembly of silver nanoparticles along silver nanowires.
abstract: A simple and low-cost method to create metal-metal hybrid nanostructures possessing fairly regularly spaced "hot-spots" of surface plasmon resonances is proposed. The nanohybrid structure was prepared via self-assembly during a simple drop-casting procedure, using chemically synthesized silver nanowires and silver nanoparticles prepared in a single batch of a polyol process. Wide field illumination of these nanohybrids produced hot-spots with spacings of around 500 nm to 1 microm. The intensity of the emission/scattering from the hot-spots fluctuates over time. The proposed structure can be useful for the development of molecular-sensors or as a substrate for surface enhanced Raman/fluorescence spectroscopy.
authors.affiliation: Department of Chemistry and Center for Surface Chemistry and Catalysis, Katholieke Universiteit Leuven, Celestijnenlaan 200 F, B-3001 Leuven, Belgium.
authors.forename: M Linh
authors.initials: ML
authors.lastname: Tran
authors.forename: Silvia P
authors.initials: SP
authors.lastname: Centeno
authors.forename: James A
authors.initials: JA
authors.lastname: Hutchison
authors.forename: Hans
authors.initials: H
authors.lastname: Engelkamp
authors.forename: Duoduo
authors.initials: D
authors.lastname: Liang
authors.forename: Gustaaf
authors.initials: G
authors.lastname: Van Tendeloo
authors.forename: Bert F
authors.initials: BF
authors.lastname: Sels
authors.forename: Johan
authors.initials: J
authors.lastname: Hofkens
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Uji-i