Berlin 2024 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 58: Focus Session: Novel Approaches to Surface Plasmon Generated Charges and Heat for Photocatalysis I (joint session O/CPP)

O 58.4: Vortrag

Mittwoch, 20. März 2024, 16:00–16:15, MA 141

How to evaluate temperature at single-molecule, single-particle and ensemble levels — •Simone Ezendam, Julian Gargiulo, and Emiliano Cortés — Physics department, University of Munich, Germany

Understanding temperature dynamics across various scales ( single-molecule, single-particle, and ensemble) is pivotal in harnessing plasmonic catalysis for enhanced chemical reactivity. We present three studies investigating this intricate interplay. First, employing super-resolution fluorescence microscopy, we probe single-particle plasmonic catalysis, unveiling distinct pathways and spatial reactivity [1]. Second, through single-particle thermometry, we explore morphology-driven light-to-heat conversion in Au/Pd nanoparticles, unraveling intriguing photothermal responses [2]. Finally, we introduce Anti Stokes thermometry to measure temperature in plasmonic ensembles, validating its efficacy in understanding light-induced heating of nanoparticle arrays [3]. These findings deepen our understanding of plasmonic heating, guiding the design of future nanocatalysts.

[1] 10.1021/acsnano.3c07833, [2] 10.1038/s41467-023-38982-9 [3] 10.1002/adom.202301496

Keywords: single-molecule; single-particle; nano thermometry; plasmonic catalysis