Aluminum Nanocubes Have Sharp Corners
| Autor: | Dayne F. Swearer, Benjamin D. Clark, Gang Wu, David Renard, Luca Bursi, Peter Nordlander, Christian R. Jacobson, Arzeena S. Ali, Naomi J. Halas, Minhan Lou, Ah-Lim Tsai |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanophotonics Oxide General Physics and Astronomy Nanoparticle Nanotechnology 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences plasmonics Metal chemistry.chemical_compound field-enhancement General Materials Science nanotechnology shape control {100} faceted Plasmon General Engineering 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Reagent visual_art visual_art.visual_art_medium engineering Noble metal 0210 nano-technology Science technology and society |
| Popis: | Of the many plasmonic nanoparticle geometries that have been synthesized, nanocubes have been of particular interest for creating nanocavities, facilitating plasmon coupling, and enhancing phenomena dependent upon local electromagnetic fields. Here we report the straightforward colloidal synthesis of single-crystalline {100} terminated Al nanocubes by decomposing AlH3 with Tebbe’s reagent in tetrahydrofuran. The size and shape of the Al nanocubes is controlled by the reaction time and the ratio of AlH3 to Tebbe’s reagent, which, together with reaction temperature, establish kinetic control over Al nanocube growth. Al nanocubes possess strong localized field enhancements at their sharp corners and resonances highly amenable to coupling with metallic substrates. Their native oxide surface renders them extremely air stable. Chemically synthesized Al nanocubes provide an earth-abundant alternative to noble metal nanocubes for plasmonics and nanophotonics applications. |
| Databáze: | OpenAIRE |
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