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 and P. G. Kik
Plasmon-enhanced photothermal response in heterogeneous metallic trimers
", Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91631B (September 10, 2014); doi:10.1117/12.2062259; http://dx.doi.org/10.1117/12.2062259