In situ optical study of the phase transformation kinetics of plasmonic Ag in laser-irradiated nanocomposite glass

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6 Scopus citations

Abstract

A real-time spectroscopic study of the optical response of plasmonic Ag produced during thermal processing of laser-irradiated silver nanocomposite glass has been carried out. Specifically, this work addresses the early stage of in situ heat treatment prior to the plasmonic coupling which has been reported for relatively high temperatures and long holding times [13]. The data supports the plasmonic Ag phase transformation in the confined "super nucleation" regimes created as a result of the photofragmentation of Ag nanoparticles by the laser pulses. Consistent application of the Kolmogorov-Johnson-Mehl-Avrami theory in the 623-653 K relatively low temperature range to optical data collected in the 1-15 min time window allows for determining an activation energy for the phase transformation in the non-interacting regime at 0.55 (± 0.04) eV.

Original languageEnglish (US)
Pages (from-to)20-23
Number of pages4
JournalJournal of Non-Crystalline Solids
Volume425
DOIs
StatePublished - May 26 2015

Keywords

  • Kinetics
  • Nanoparticles
  • Optical materials

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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