Regensburg 2016 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 68: Metal-Semiconductor Hybrids
HL 68.8: Vortrag
Donnerstag, 10. März 2016, 12:00–12:15, H10
Electrochemical approaches for controlling plasmonic nanostructures — •Gilles Bourret1, Tuncay Ozel2, Martin Blaber2, George Schatz2, and Chad Mirkin2 — 1Paris-Lodron University, Salzburg, Austria — 2Northwestern Universty, USA
The optical and electrical properties of heterogeneous nanowires are profoundly related to their composition and nanoscale architecture. However, the intrinsic constraints of conventional synthetic and lithographic techniques have limited the types of multi-compositional nanowires that can be created and studied in the laboratory. Our recent progress in templated syntheses of one-dimensional nanostructures will be briefly disccussed in the context of plasmonics.[1-3] In particular, we report a high-throughput technique that can be used to prepare coaxial nanowires with sub-10 nm control over the architectural parameters in both axial and radial dimensions. The method, which is termed coaxial lithography (COAL),[3] relies on templated electrochemical synthesis and can create coaxial nanowires composed of combinations of metals and semiconductors. The optoelectronic properties of a plasmonic nanoring embedded hybrid core-shell semiconductor nanowire were studied. This demonstrates the potential of this new synthetic technique to radically change nanowire fabrication.
References. [1] G. R. Bourret, T. Ozel, M. Blaber, C. Shade, G. C. Schatz and C. A. Mirkin Nano Lett. 2013, 13, 2270. [2] T. Ozel, G. R. Bourret, A. Schmucker, K. Brown and C. A. Mirkin Adv. Mater. 2013, 25, 4515. [3] T. Ozel, G. R. Bourret and C. A. Mirkin Nature Nanotech. 2015, 10, 319.