title: A tunable plasmon resonance in gold nanobelts.
abstract: Plasmonic nanowires with sub-100-nm rectangular cross sections were found to exhibit a strong transverse plasmon peak at visible wavelengths. By correlating atomic force microscopy measurements of individual nanobelts with their dark-field scattering spectra, it is seen that the transverse peak tunes with cross-sectional aspect ratio. Simulations revealed that the scattering plasmonic modes are transverse antisymmetric excitations across the nanobelt width. Unlike larger diameter silver nanowires, these nanobelts exhibit sharp, tunable plasmon resonances similar to those of nanoparticles.
authors.affiliation: Department of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: Lindsey J E
authors.initials: LJ
authors.lastname: Anderson
authors.forename: Courtney M
authors.initials: CM
authors.lastname: Payne
authors.forename: Yu-Rong
authors.initials: YR
authors.lastname: Zhen
authors.forename: Peter
authors.initials: P
authors.lastname: Nordlander
authors.forename: Jason H
authors.initials: JH
authors.lastname: Hafner
mesh_terms: D003198:Computer Simulation; D006046:Gold / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D006046:Gold; D014025:Titanium