title: Orientation-preserving transfer and directional light scattering from individual light-bending nanoparticles.
abstract: A nanocup, or semishell, is an asymmetric plasmonic "Janus" nanoparticle with electric and magnetic plasmon modes; the latter scatters light in a direction controlled by nanoparticle orientation, making it the nanoscale analog of a parabolic antenna. Here we report a method for transferring nanocups from their growth substrate to oxide-terminated substrates that precisely preserves their three-dimensional orientation, enabling their use as nanophotonic components. This enables us to selectively excite and probe the electric and magnetic plasmon modes of individual nanocups, showing how the scattered light depends on the direction of incoming light and the orientation of this nanoparticle antenna.
authors: Department of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States.
authors: Yu
authors: Y
authors: Zhang
authors: Aoune
authors: A
authors: Barhoumi
authors: J Britt
authors: JB
authors: Lassiter
authors: Naomi J
authors: NJ
authors: Halas
mesh_terms: D008027:Light; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D014025:Titanium