Open AccessAirborne Gold Nanoparticle Detection Using Photoluminescence Excited with a Continuous Wave Laser
Author(s) -
Per Samuelsson,
Markus Snellman,
Martin H. Magnusson,
Knut Deppert,
Marcus Aldén,
Zhongshan Li
Publication year - 2021
Publication title -
applied spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.415
H-Index - 110
eISSN - 1943-3530
pISSN - 0003-7028
DOI - 10.1177/00037028211042021
Subject(s) - photoluminescence , nanoparticle , materials science , raman spectroscopy , colloidal gold , photoluminescence excitation , plasmon , excited state , quantum yield , laser , analytical chemistry (journal) , nanotechnology , optoelectronics , optics , chemistry , fluorescence , physics , atomic physics , organic chemistry
We report the observation of photoluminescence emission from airborne gold, silver, and copper nanoparticles. A continuous wave 532 nm laser was employed for excitation. Photoluminescence from gold nanoparticles carried in a nitrogen gas flow was both spectrally resolved and directly imaged in situ using an intensified charge-coupled device camera. The simultaneously detected Raman signal from the nitrogen molecules enables quantitative estimation of the photoluminescence quantum yield of the gold nanoparticles. Photoluminescence from metal nanoparticles carried in a gas flow provides a potential tool for operando imaging of plasmonic metal nanoparticles in aerosol reactions.