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 journalArticle

46 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)959-977
Number of pages19
JournalApplied Optics
Volume46
Issue number6
DOIs
StatePublished - Feb 20 2007

Fingerprint

Carbon clusters
soot
Laser beam effects
Soot
Pulsed lasers
pulsed lasers
Microscopes
Nucleation
Electron microscopes
electron microscopes
microscopes
Scanning
X rays
irradiation
scanning
Wave transmission
Laser radiation
Vaporization
nucleation
x rays

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

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.; Van Poppel, Laura H.; Dansson, Mark A.; Buseck, P R.

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

Research output: Contribution to journalArticle

@article{1d535d79dbdf4ed48e81575dac2d7c3f,
title = "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",
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.",
author = "Michelsen, {Hope A.} and Tivanski, {Alexei V.} and Gilles, {Mary K.} and {Van Poppel}, {Laura H.} and Dansson, {Mark A.} and Buseck, {P R}",
year = "2007",
month = "2",
day = "20",
doi = "10.1364/AO.46.000959",
language = "English (US)",
volume = "46",
pages = "959--977",
journal = "Applied Optics",
issn = "0003-6935",
publisher = "The Optical Society",
number = "6",

}

TY - JOUR

T1 - 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

AU - Michelsen, Hope A.

AU - Tivanski, Alexei V.

AU - Gilles, Mary K.

AU - Van Poppel, Laura H.

AU - Dansson, Mark A.

AU - Buseck, P R

PY - 2007/2/20

Y1 - 2007/2/20

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=33947529672&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33947529672&partnerID=8YFLogxK

U2 - 10.1364/AO.46.000959

DO - 10.1364/AO.46.000959

M3 - Article

C2 - 17279144

AN - SCOPUS:33947529672

VL - 46

SP - 959

EP - 977

JO - Applied Optics

JF - Applied Optics

SN - 0003-6935

IS - 6

ER -