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28 August 2015 Probing plasmonic hot spots on single gold nanowires using combined near-field techniques
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Abstract
The plasmonic properties of individual gold nanowires (NW) have been investigated using both two-photon luminescence (2PL) coupled to atomic force microscopy (AFM) and photoemission electron microscopy (PEEM) associated to low-energy electron microscopy (LEEM) measurements. Using these complementary near-field characterization techniques, comparative studies between wires made either by colloidal chemistry (CC) or by e-beam lithography (EBL) have been undertaken towards a better understanding of the role of the wires crystallinity regarding its optical properties. Considering comparable excitation conditions, we show that wires made by colloidal synthesis exhibits quite similar field enhancement effects ("hot spots") as EBL NW, however their 2PL emission spectrum clearly reveals their crystalline properties.
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© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Patrick Hsia, Ludovic Douillard, Fabrice Charra, Sylvie Marguet, Sergei Kostcheev, Renaud J. B. Bachelot, and Céline Fiorini-Debuisschert "Probing plasmonic hot spots on single gold nanowires using combined near-field techniques", Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 95470F (28 August 2015); https://doi.org/10.1117/12.2188025
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