title: Optical properties of star-shaped gold nanoparticles.
abstract: Here we report the synthesis, structure, and optical properties of ca. 100 nm star-shaped gold nanoparticles. Single particle spectroscopy measurements revealed that these nanoparticles have multiple plasmon resonances resulting in polarization-dependent scattering with multiple spectral peaks, which correspond to the different tips on the star-shaped structure. The plasmon resonances were also found to be extremely sensitive to the local dielectric environment.
authors.affiliation: Department of Physics & Astronomy, Rice University, Houston, Texas 77005, USA.
authors.forename: Colleen L
authors.initials: CL
authors.lastname: Nehl
authors.forename: Hongwei
authors.initials: H
authors.lastname: Liao
authors.forename: Jason H
authors.initials: JH
authors.lastname: Hafner
mesh_terms: D016880:Anisotropy; D006046:Gold / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D006046:Gold