title: Plasmonic focusing reduces ensemble linewidth of silver-coated gold nanorods.
abstract: Silver coating gold nanorods reduces the ensemble plasmon line width by changing the relation connecting particle shape and plasmon resonance wavelength. This change, we term "plasmonic focusing", leads to less variation of resonance wavelengths for the same particle size distribution. We also find smaller single particle linewidth comparing resonances at the same wavelength but show that this does not contribute to the ensemble linewidth narrowing.
authors.affiliation: Institute for Physical Chemistry, University of Mainz, Mainz, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Becker
authors.forename: Inga
authors.initials: I
authors.lastname: Zins
authors.forename: Arpad
authors.initials: A
authors.lastname: Jakab
authors.forename: Yuriy
authors.initials: Y
authors.lastname: Khalavka
authors.forename: Olaf
authors.initials: O
authors.lastname: Schubert
authors.forename: Carsten
authors.initials: C
authors.lastname: Sönnichsen
mesh_terms: D003460:Crystallization / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D012834:Silver; D006046:Gold