科研之友
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摘要
During the first steps of vacuum deposition of thin films, grains appear randomly on the substrate as isolated islands. To characterize the formation of grains in thin films, the melting temperature of grains is studied theoretically as a function of 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 a sphere, portion of sphere, tetrahedron, or parallelepiped shape. These cases are investigated here. The effect of stress on the melting temperature is also considered.
- 出版日期2006-4-28
