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- Title
Rapid and Semi-automated Method for Analysis of the Number of Atoms of Ultra-small Platinum Clusters on Carbon.
- Authors
Yang, J. C.; Bradley, S.; Gibson, J. M.
- Abstract
Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801 UOP LLC, 50 East Algonquin Road, Des Plaines, IL 60017 Very high angle (~ 100 mrad) annular dark-field (HAADF) images in a dedicated scanning transmission electron microscope (STEM) can be used to quantitatively measure the number of atoms in a cluster on a support material. We have developed a computer program which will automatically find the location of the particles and then integrate the intensity to find the number of atoms per cluster. We have examined ultra-small Pt clusters on a C substrate by this novel mass-spectroscopic technique. We discovered that the Pt clusters maintain their three-dimensional shape, and are probably spherical.
- Publication
Microscopy & Microanalysis, 2000, Vol 6, Issue 4, p353
- ISSN
1431-9276
- Publication type
Article
- DOI
10.1007/s100050010043