Determination of nanocluster sizes from dark-field scanning transmission electron microscopy images

Norihiko L. Okamoto, Bryan W. Reed, Shareghe Mehraeen, Apoorva Kulkarni, David Gene Morgan, Bruce C. Gates, Nigel D. Brownings

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

A novel method of determining nanocluster sizes and size distributions using high-angle annular dark-field imaging in scanning transmission electron microscopy is described. This method is demonstrated for MgO-supported [Os 10C(CO)24]2- clusters formed by treating Os3(CO)12 precursors in CO. The image analysis identified the presence of both Os3(CO)12 precursors and [Os 10C(CO)24]2- clusters in the expected ratio (with the sizes matching those calculated on the basis of their crystallographically determined structures within 6%) and also larger clusters that can be readily identified as combinations of the former clusters.

Original languageEnglish
Pages (from-to)1759-1763
Number of pages5
JournalJournal of Physical Chemistry C
Volume112
Issue number6
DOIs
Publication statusPublished - 2008 Feb 14
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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