Related Experiment Video
Updated: Apr 28, 2026
Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
Published on: March 2, 2016
Impurity-induced plasmon damping in individual cobalt-doped hollow Au nanoshells
Christyn A Thibodeaux1, Vikram Kulkarni, Wei-Shun Chang
1Department of Electrical and Computer Engineering, ‡Applied Physics Graduate Program, §Department of Chemistry, ∥Department of Physics and Astronomy, ⊥Rice Quantum Institute, and #the Laboratory for Nanophotonics, Rice University , MS-378, 6100 Main Street, Houston, Texas 77005, United States.
Abstract:
The optical properties of plasmonic nanoparticles in the size range corresponding to the electrostatic, or dipole, limit have the potential to reveal effects otherwise masked by phase retardation. Here we examine the optical properties of individual, sub-50 nm hollow Au nanoshells (Co-HGNS), where Co is the initial sacrificial core nanoparticle, using single particle total internal reflection scattering (TIRS) spectroscopy. The residual Co present in the metallic shell induces a substantial broadening of the homogeneous plasmon resonance line width of the Co-HGNS, where the full width at half-maximum (fwhm) broadens proportionately with increasing Co content. This doping-induced line broadening provides a strategy for controlling plasmon line width independent of nanoparticle size, and has the potential to substantially modify the relative decay channels for localized nanoparticle surface plasmons.
