Showing papers by "Alison M. Funston published in 2011"
TL;DR: Experimental data on the light scattering properties of linear chains of gold nanoparticles with up to six nanoparticles and an interparticle spacing of 1 nm allow determination of an asymptotic maximum resonance at a chain length of 10-12 particles.
Abstract: We present experimental data on the light scattering properties of linear chains of gold nanoparticles with up to six nanoparticles and an interparticle spacing of 1 nm. A red shift of the surface plasmon resonance with increasing chain length is observed. An exponential model applied to the experimental data allows determination of an asymptotic maximum resonance at a chain length of 10-12 particles. The optical data are compared with analytical and numerical calculation methods (EEM and BEM).
197 citations
TL;DR: The three-dimensional shape of single-crystal gold nanorods grown in the presence of silver ions is determined using electron tomography and thickness profile measurements and it is found that, contrary to the current literature, the octagonal side-facets are sparsely packed atomic planes all belonging to the same symmetry-equivalent family.
Abstract: We determine the three-dimensional shape, to within 1 nm resolution, of single-crystal gold nanorods grown in the presence of silver ions using electron tomography and thickness profile measurements. We find that, contrary to the current literature, the octagonal side-facets are sparsely packed atomic planes all belonging to the same symmetry-equivalent family, {0 5 12}. Furthermore, the rod ends terminate in a pyramid with slightly different facets, and each pyramid is connected to the sides by four small {0 5 12} "bridging" facets.
129 citations
TL;DR: In this article, a wide-bandgap chalogenide glass via sol-gel processing is used to dope widebandgap quantum quantum dots (SQDs) via solgel processing.
Abstract: Semiconductor quantum dots (QDs) are used to dope wide-bandgap chalogenide glasses via sol-gel processing. Such chalcogenides enhance surface passivation of the quantum dots, as evidenced by the increased PL emissions of both core and core shell species used, while a ZnO glass leads to irreversible oxidation of the embedded quantum dots. The embedded QDs are photostable.
32 citations
TL;DR: In this paper, an experimental and theoretical examination of the coupling modes within superstructures of gold nanorod trimers is presented, and the modes are elucidated using an electrostatic eigenmode method based on the coupling of evanescent electric fields.
Abstract: An experimental and theoretical examination of the coupling modes within superstructures of gold nanorod trimers is presented. The experimentally determined spectrum of the nanorod trimers is reported and the modes are elucidated using an electrostatic eigenmode method based on the coupling of evanescent electric fields. The theory is able to reproduce the experimental spectrum well, and the nature of the modes and interactions are discussed.
22 citations
3 citations