Skip to main content Accessibility help
×
Home

Production and Characterization of Deposited Mono-Sized Clusters

  • Donald M. Cox (a1), Barbara Kessler (a1), Pierre Fayet (a2), Wolfgang Eberhardt (a3), Rex D. Sherwood (a1) and Andrew Kaldor (a1)...

Abstract

Using high energy rare gas ion sputtering of metal targets, we are able to produce nanoamps of mass selected transition metal clusters. Mono-sized cluster ions are deposited at low kinetic energy upon substrates, e.g. silica or carbon, and are then characterized using UV and x-ray photoemission. In this paper we will discuss photoemission measurements of the 4f7/2 core level energies of Au (1–5,7 atom samples) clusters deposited on silica. From such studies we are beginning to understand how electronic structure, cluster stability and mobility depend on (deposited) cluster size, surface coverage, and substrate temperature.

Copyright

References

Hide All
1. Kaldor, A., Cox, D. M., and Zakin, M. R., in Advances in Chemical Physics. Vol 70 edited by Prigogine, I. and Rice, S. A., (Wiley, New York, 1988) pg 211 and references therein.
2. (a) Masson, A., Bellamy, B., Romdhane, Y. H., Che, M., Roulet, H., and Dufour, G., Surf. Sci. 173, 479 (1986).
(b) Mason, M. G., Phys. Rev. B27, 748 (1983).
(c) DiCenzo, S. B. and Werthiem, G. K., Comments Solid State Phys. 11 203 (1985), and references therein.
(d) Cheung, T. P., Surf. Sci. 127 L129 (1983); 140, 151 (1984).
(e) Wertheim, G. K. and DiCenzo, S. B., Phys. Rev. B37 844 (1988).
3. For example see, (a) Sinfeld, J. H., Catal. Rev. 3, 175 (1969);
Sinfeld, J. H., Annu. Rev. Mater. Sci. 2 641 (1972).
4. Assumes a structureless packing model of spherical clusters. Similar numbers result from crystalline structures, e.g. see Gates, B. C., Kratzer, J. R. and Schuit, C. A., Chemistry of Catalytic Processes. McGraw Hill, New York (1979).
5. Cox, D. M., Fayet, P., Brickman, R. O., Hahn, M. Y. and Kaldor, A., Catal. Lett. 4, 271 (1990).
6. Fayet, P. and Woeste, L., Spectrosc. Int. J. 3, 91 (1984);
Surf.Sci. 156, 134 (1984);
Z. Physik, D3, 177 (1986).
7. DiCenzo, S. B., Berry, S. D. and Hartford, E. H. Jr., Phys. Rev. B38, 8465 (1988).
8. Eberhardt, W., Fayet, P., Cox, D. M., Fu, Z., Kaldor, A., Sherwood, R. and Sondericher, D., Phys. Rev. Lett. 64 780 (1990).

Production and Characterization of Deposited Mono-Sized Clusters

  • Donald M. Cox (a1), Barbara Kessler (a1), Pierre Fayet (a2), Wolfgang Eberhardt (a3), Rex D. Sherwood (a1) and Andrew Kaldor (a1)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed