Optical properties of star-shaped gold nanoparticles.
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.
Nehl
Colleen L
CL
Department of Physics & Astronomy, Rice University, Houston, Texas 77005, USA.
Liao
Hongwei
H
Hafner
Jason H
JH
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*
D006046:Gold