Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope

Hope A. Michelsen; Alexei V. Tivanski; Mary K. Gilles; Laura H. Van Poppel; Mark A. Dansson; P R Buseck

doi:10.1364/AO.46.000959

Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope

Hope A. Michelsen, Alexei V. Tivanski, Mary K. Gilles, Laura H. Van Poppel, Mark A. Dansson, P R Buseck

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

We investigated the physical and chemical changes induced in soot aggregates exposed to laser radiation using a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope to perform near-edge x-ray absorption fine structure spectroscopy. Laser-induced nanoparticle production was observed at fluences above 0.12 J/cm² at 532 nm and 0.22 J/cm² at 1064 nm. Our results indicate that new particle formation proceeds via (1) vaporization of small carbon clusters by thermal or photolytic mechanisms, followed by homogeneous nucleation, (2) heterogeneous nucleation of vaporized carbon clusters onto material ablated from primary particles, or (3) both processes.

Original language	English (US)
Pages (from-to)	959-977
Number of pages	19
Journal	Applied Optics
Volume	46
Issue number	6
DOIs	https://doi.org/10.1364/AO.46.000959
State	Published - Feb 20 2007

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.46.000959

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Michelsen, H. A., Tivanski, A. V., Gilles, M. K., Van Poppel, L. H., Dansson, M. A., & Buseck, P. R. (2007). Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope. Applied Optics, 46(6), 959-977. https://doi.org/10.1364/AO.46.000959

Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope. / Michelsen, Hope A.; Tivanski, Alexei V.; Gilles, Mary K. et al.

In: Applied Optics, Vol. 46, No. 6, 20.02.2007, p. 959-977.

Research output: Contribution to journal › Article › peer-review

Michelsen, HA, Tivanski, AV, Gilles, MK, Van Poppel, LH, Dansson, MA & Buseck, PR 2007, 'Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope', Applied Optics, vol. 46, no. 6, pp. 959-977. https://doi.org/10.1364/AO.46.000959

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abstract = "We investigated the physical and chemical changes induced in soot aggregates exposed to laser radiation using a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope to perform near-edge x-ray absorption fine structure spectroscopy. Laser-induced nanoparticle production was observed at fluences above 0.12 J/cm2 at 532 nm and 0.22 J/cm2 at 1064 nm. Our results indicate that new particle formation proceeds via (1) vaporization of small carbon clusters by thermal or photolytic mechanisms, followed by homogeneous nucleation, (2) heterogeneous nucleation of vaporized carbon clusters onto material ablated from primary particles, or (3) both processes.",

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Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope

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