In situ nanoparticle size measurements of gas-borne silicon nanoparticles by time-resolved laser-induced incandescence

T.A. Sipkens, R. Mansmann, K.J. Daun, N. Petermann, John Titantah, M.E.J. Karttunen, H. Wiggers, T. Dreier, C. Schulz

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57 Citations (Scopus)

Abstract

This paper describes the application of time-resolved laser-induced incandescence (TiRe-LII), a combustion diagnostic used mainly for measuring soot primary particles, to size silicon nanoparticles formed within a plasma reactor. Inferring nanoparticle sizes from TiRe-LII data requires knowledge of the heat transfer through which the laser-heated nanoparticles equilibrate with their surroundings. Models of the free molecular conduction and evaporation are derived, including a thermal accommodation coefficient found through molecular dynamics. The model is used to analyze TiRe-LII measurements made on silicon nanoparticles synthesized in a low-pressure plasma reactor containing argon and hydrogen. Nanoparticle sizes inferred from the TiRe-LII data agree with the results of a Brunauer–Emmett–Teller analysis.
Original languageEnglish
Pages (from-to)623-636
JournalApplied Physics B: Lasers and Optics
Volume116
Issue number3
DOIs
Publication statusPublished - 2014
Externally publishedYes

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