|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||LL-18: Angle Dependence of Optical Plasmonic Response of Concave Bow-tie Sliver Nanoparticle
||Jingxuan Ge, Gerd Duscher, Ramakrishnan (Ramki) Kalyanaraman, Abhinav Malasi, Annette Emily Farah
|On-Site Speaker (Planned)
Nanostructured materials allow for engineering of the optical response of a material. We report new plasmonic behavior of silver nanoparticles with bow-tie structure synthesized by nanosphere lithography. The plasmonic responses of silver nanoparticles were mapped out by monochromated electron energy-loss spectroscopy (EELS) in a scanning transmission electron microscope. Reference spectra of single silver triangles show the same response as reported earlier, however our triangles show concave curvature at the edges and not convex ones. This shows that the plasmonic response of the edges of triangles is not dependent on how close the shape is to a disk, but depends locally on the curvature alone. We studied the angle dependence of the optical plasmonic response of the silver nanoparticle with bow-tie structure. Specifically, plasmon peaks are red-shift between the bridge and the corner of the silver bow-tie nanoparticle, with increasing deviation from the ideal bow-tie geometry.
||Planned: A print-only volume