Study of Island Formation in Epitaxially Strained Films on Unbounded Domains
Study of Island Formation in Epitaxially Strained Films on Unbounded Domains
复制标题
无界域上外延应变膜岛形成的研究
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
B. Zwicknagl
中科院分区:
文献类型:
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作者:
P. Bella;M. Goldman;B. Zwicknagl
We consider a variational model related to the formation of islands in heteroepitaxial growth on unbounded domains. We first derive the scaling regimes of the minimal energy in terms of the volume of the film and the amplitude of the crystallographic misfit. For small volumes, non-existence of minimizers is then proven. This corresponds to the experimentally observed wetting effect. On the other hand, we show the existence of minimizers for large volumes. We finally study the asymptotic behavior of the optimal shapes.