New research on thin gold films has uncovered novel photoluminescence behaviors, advancing our understanding of nanoscale chemical reactions and temperature measurement. This breakthrough enhances the use of metals in energy research and offers new methods to probe surface processes crucial for solar fuel development. Credit: SciTechDaily.com
In 1969, scientists discovered that all metals luminesce to some degree, but the intervening years failed to yield a clear understanding of how this occurs. Renewed interest in this light emission, driven by nanoscale temperature mapping and photochemistry applications, has reignited the debate surrounding its origins. But the answer was still unclear – until now.
These observations provided key spatial information about exactly where the photoluminescence process occurred in the gold, which is a prerequisite for the metal’s use as a probe. Another unexpected outcome of the study was the discovery that the gold’s photoluminescent signal could be used to probe the material’s own surface temperature – a boon for scientists working at the nanoscale.
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