Abstract
Zanghi et al. measured the radial distribution functions of gold clusters on a KC1 substrate before and after annealing, and interpreted their results as indicating that a repulsive force exists between each pair of clusters. However, these results may be insufficient to explain the clustering phenomenon in all cases. For instance if this were the only force involved then coalescence could not occur. However, coalescence always occurs in the forming of thin films.We present experimental results and some theoretical considerations of the interactive forces applied to the clustering of platinum deposited on a thin carbon film of about 20Å thickness. The ultra high vacuum (UHV)-STEM and digital image processor were used for the measurements of the size (d) and edge to edge (r-d) distributions (see Fig. 1).
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