In situ transmission electron microscopy observation of silver oxidation in ionized/atomic gas

Li Sun, Kyong Wook Noh, Jian Guo Wen, Shen J. Dillon

Research output: Contribution to journalArticlepeer-review

Abstract

The interaction between silver and ionized and atomic gas was observed directly by in situ transmission electron microscopy with an environmental cell for the first time. The electron beam provides dual functions as the source of both gas ionization and imaging. The concentration of ionized gas was tuned via adjusting the current density of the electron beam. Oxidation of the silver is observed in situ, indicating the presence of ionized and/or atomic oxygen. The evolution of microstructure and phase constituents was characterized. Then the oxidation rate was measured, and the relationships among grain size, mass transport rate, and electron flux were characterized. The role of the electron beam is discussed, and the results are rationalized with respect to ex situ results from the literature.

Original languageEnglish (US)
Pages (from-to)14201-14206
Number of pages6
JournalLangmuir
Volume27
Issue number23
DOIs
StatePublished - Dec 6 2011

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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