Rare-earth fluorescence thermometry of laser-induced plasmon heating in silver nanoparticles arrays

The laser-induced plasmon heating of an ordered array of silver nanoparticles, under continuous illumination with an Ar laser, was probed by rare-earth fluorescence thermometry. The rise in temperature in the samples was monitored by measuring the temperature-sensitive photoluminescent emission of a...

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Bibliographic Details
Published in:Scientific reports 2018-09, Vol.8 (1), p.13811-9, Article 13811
Main Authors: Cesca, Tiziana, Perotto, Giovanni, Pellegrini, Giovanni, Michieli, Niccolò, Kalinic, Boris, Mattei, Giovanni
Format: Article
Language:English
Subjects:
639/301/1019/1021
639/301/357/354
Emission measurements
Europium
Fluorescence
Heating
Humanities and Social Sciences
Illumination
Lasers
multidisciplinary
Nanoparticles
Polymethylmethacrylate
Science
Science (multidisciplinary)
Silver
Surface plasmon resonance
Temperature effects
Thin films
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Summary:The laser-induced plasmon heating of an ordered array of silver nanoparticles, under continuous illumination with an Ar laser, was probed by rare-earth fluorescence thermometry. The rise in temperature in the samples was monitored by measuring the temperature-sensitive photoluminescent emission of a europium complex (EuTTA) embedded in PMMA thin-films, deposited onto the nanoparticles array. A maximum temperature increase of 19 °C was determined upon resonant illumination with the surface plasmon resonance of the nanoarray at the highest pump Ar laser power (173 mW). The experimental results were supported by finite elements method electrodynamic simulations, which provided also information on the temporal dynamics of the heating process. This method proved to be a facile and accurate approach to probe the actual temperature increase due to photo-induced plasmon heating in plasmonic nanosystems.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-32179-7