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Detection of fluorescent nanoparticles in flame with femtosecond laser-induced fluorescence anisotropy

Bruno, Annalisa; Ossler, Frederik LU ; de Lisio, Corrado; Minutolo, Patrizia; Spinelli, Nicola and D'Alessio, Antonio (2008) In Optics Express 16(8). p.5623-5632
Abstract
The mean size of fluorescent nanoparticles produced in a propane flame has been measured with an in-situ technique employing a femtosecond laser to excite the sample and a streak camera for time-resolved detection of the fluorescence. The time profile of the fluorescence anisotropy showed a Gaussian behaviour, typical of free rotor reorientation. By measuring its width, we estimated an average carbon particle diameter of 3.3 nm, thus confirming the existence of combustion produced nanoparticles. The technique proves to be applicable to the study of gas-phase nanoparticles, both in combustion and environmental studies.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Express
volume
16
issue
8
pages
5623 - 5632
publisher
OSA
external identifiers
  • wos:000255120300051
  • scopus:42149163479
ISSN
1094-4087
DOI
10.1364/OE.16.005623
language
English
LU publication?
yes
id
757d014d-7581-452b-894e-bf512bcd4ca0 (old id 1206221)
date added to LUP
2008-09-19 11:50:36
date last changed
2017-01-01 05:36:35
@article{757d014d-7581-452b-894e-bf512bcd4ca0,
  abstract     = {The mean size of fluorescent nanoparticles produced in a propane flame has been measured with an in-situ technique employing a femtosecond laser to excite the sample and a streak camera for time-resolved detection of the fluorescence. The time profile of the fluorescence anisotropy showed a Gaussian behaviour, typical of free rotor reorientation. By measuring its width, we estimated an average carbon particle diameter of 3.3 nm, thus confirming the existence of combustion produced nanoparticles. The technique proves to be applicable to the study of gas-phase nanoparticles, both in combustion and environmental studies.},
  author       = {Bruno, Annalisa and Ossler, Frederik and de Lisio, Corrado and Minutolo, Patrizia and Spinelli, Nicola and D'Alessio, Antonio},
  issn         = {1094-4087},
  language     = {eng},
  number       = {8},
  pages        = {5623--5632},
  publisher    = {OSA},
  series       = {Optics Express},
  title        = {Detection of fluorescent nanoparticles in flame with femtosecond laser-induced fluorescence anisotropy},
  url          = {http://dx.doi.org/10.1364/OE.16.005623},
  volume       = {16},
  year         = {2008},
}