10 September 2014 Plasmon-enhanced photothermal response in heterogeneous metallic trimers
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Heat generation in plasmonic nanostructures has attracted enormous attention due to the ability of these nanostructures to generate high temperatures in nanoscale volumes using far-field irradiation, enabling applications ranging from photothermal therapy to fast (sub-nanosecond) thermal optical switching. Here we investigate the optical and thermal response of a heterogeneous trimer structure composed of a gold nanoparticle surrounded by two larger silver nanoparticles analytically and numerically. We observe that this type of multi-scale multi-material plasmonic oligomer can produce temperature changes over two orders of magnitude higher than possible with isolated gold nanoparticles.
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S. Toroghi, S. Toroghi, P. G. Kik, P. G. Kik, "Plasmon-enhanced photothermal response in heterogeneous metallic trimers", Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91631B (10 September 2014); doi: 10.1117/12.2062259; https://doi.org/10.1117/12.2062259


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