Abstract
During the first steps of vacuum deposition of thin films, grains appear randomly onthe substrate as isolated islands. To characterize the formation of grains in thinfilms, the melting temperature of grains is studied theoretically as a functionof their size and shape. Assuming a liquid grain that is a portion of a sphere,during the liquid–solid transformation the nano-grains could solidify adopting asphere, portion of sphere, tetrahedron, or parallelepiped shape. These cases areinvestigated here. The effect of stress on the melting temperature is also considered.
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