title: Nanoplasmon-enabled macroscopic thermal management.
abstract: In numerous applications of energy harvesting via transformation of light into heat the focus recently shifted towards highly absorptive nanoplasmonic materials. It is currently established that noble metals-based absorptive plasmonic platforms deliver significant light-capturing capability and can be viewed as super-absorbers of optical radiation. Naturally, approaches to the direct experimental probing of macroscopic temperature increase resulting from these absorbers are welcomed. Here we derive a general quantitative method of characterizing heat-generating properties of optically absorptive layers via macroscopic thermal imaging. We further monitor macroscopic areas that are homogeneously heated by several degrees with nanostructures that occupy a mere 8% of the surface, leaving it essentially transparent and evidencing significant heat generation capability of nanoplasmon-enabled light capture. This has a direct bearing to a large number of applications where thermal management is crucial.
authors.affiliation: Department of Applied Physics, Chalmers University of Technology, Göteborg 41296, Sweden.
authors.forename: Gustav Edman
authors.initials: GE
authors.lastname: Jonsson
authors.affiliation: Department of Applied Physics, Chalmers University of Technology, Göteborg 41296, Sweden.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Miljkovic
authors.affiliation: Department of Applied Physics, Chalmers University of Technology, Göteborg 41296, Sweden.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Dmitriev