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Science 13 March 1992:
Vol. 255. no. 5050, pp. 1397 - 1403
DOI: 10.1126/science.255.5050.1397
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Articles

Direct Observation of Chemical Bond Dynamics on Surfaces

J. T. YATES JR. 1, M. D. ALVEY 2, M. J. DRESSER 3, M. A. HENDERSON 4, M. KISKINOVA 5, R. D. RAMSIER 1, and A. SZABÓ 6

1 Surface Science Center, Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260
2 6385 Truman Street, Chino, CA 91710
3 Department of Physics, Washington State University, Pullman, WA 99164
4 Battelle Northwest Laboratories, Post Office Box 999, Richland, WA 99357
5 Sincrotrone Trieste, Padiciano 99, 34012 Trieste, Italy
6 Department of Chemistry, University of Washington, Seattle, WA 98195

The dynamics of chemisorbed species as they swing to-and-fro on their adsorption sites may be directly observed with electron-stimulated desorption. The observation of the thermal disorder in adsorbate chemical bond directions, through studies of the thermal excitation of librational modes, allows one to visualize the potential energy surfaces controlling the structure and dynamics of adsorbates on single crystal metal and semiconductor surfaces. This information may be useful in understanding surface diffusion as well as the spatial aspects of surface chemical reactions.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Electron-Induced Oxygen Desorption from the TiO2(011)-2x1 Surface Leads to Self-Organized Vacancies.
O. Dulub, M. Batzilln, S. Solovev, E. Loginova, A. Alchagirov, T. E. Madey, and U. Diebold (2007)
Science 317, 1052-1056
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Real-Time Observation of Molecular Motion on a Surface.
E. H. G. Backus, A. Eichler, A. W. Kleyn, and M. Bonn (2005)
Science 310, 1790-1793
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