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CPM Seminar
From biology to MBE growth Dr. Philippe Peyla Université Joseph Fourier When defects are present on the surface of an elastic material (biological solid membrane, substrate, epitaxial layers) they can interact because they distort the material on which they are deposited. For thick layers identical defects (adatoms, proteins, dislocations) repel each other in order to minimize the elastic energy stored in the material. For thin layers we show that elastic attraction and even localisation are also present! We discuss the implication of these interactions in various situations like Diffusion Limited Aggregation Growth and Molecular Beam Epitaxial Growth.
Wednesday, October 13th 1999, 15:30 |