Airborne Gold Nanoparticle Detection Using Photoluminescence Excited with a Continuous Wave Laser
- Resource Type
- Authors
- Zhongshan Li; Knut Deppert; Martin Magnusson; Marcus Aldén; Markus Snellman; Per Samuelsson
- Source
- Applied Spectroscopy
- Subject
- Photoluminescence
Materials science
Physics::Medical Physics
Physics::Optics
Nanoparticle
laser excitation
law.invention
Condensed Matter::Materials Science
symbols.namesake
law
Gold nanoparticles
Instrumentation
Spectroscopy
Plasmon
Submitted Papers
in situ imaging
business.industry
Surface-enhanced Raman spectroscopy
Laser
Colloidal gold
symbols
Continuous wave
Optoelectronics
photoluminescence
business
Raman spectroscopy
aerosols
- Language
- ISSN
- 1943-3530
0003-7028
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.
Graphical Abstract