Pulsed laser heating of soot: Morphological changes

Randy L. Vander Wal, Mun Y. Choi

Research output: Contribution to journalArticle

93 Scopus citations

Abstract

Pulsed laser heating of carbon soot is used here to achieve heating in excess of 1011 Ks-1, cooling rates on the order of 109S-1 and total integrated times at elevated temperature of ca 1 milliseconds. To resolve detailed morphological changes induced in the soot by pulsed high intensity laser light, high resolution transmission electron microscopy and selected area electron diffraction are used to examine the laser-heated soot. Partial graphitization, formation of hollow particles and the average number of graphitic planes formed within soot primary particles upon high intensity pulsed laser heating are explained via a thermal annealing mechanism. This mechanism is discussed in the context of the initial physical structure of the soot.

Original languageEnglish (US)
Pages (from-to)231-239
Number of pages9
JournalCarbon
Volume37
Issue number2
DOIs
StatePublished - Jan 1 1999

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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