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Phase-Field Simulations of Thin-Film Evolution During HeteroepitaxyIn collaboration with Northwestern University and University of California, Irvine, we examine the evolution of thin films during heteroepitaxy. In semiconductor thin films, such as Ge on Si, spontaneous formation of nano-scale structures occur due to the stress caused by the difference in the lattice |
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Microstructural Evoltuion in Elastically Stressed Solids
Sponsor:
NSF
Microstructures play a crucial role in material properties. Microstructural evolution in high temperature alloy during operation is governed by the minimization of the combination of elastic and interfacial energy, mediated by diffusion. Our group (in collaboration with Northwestern University, Illinois Institute of Technology. and University |
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Topological Complexity and the Dynamics of Coarsening
Sponsor:
Department of Energy
Dendritic microstructures are commonly observed during the solidification of alloys. These topologically complex structures are altered through a coarsening, or Ostwald ripening, process in nearly isothermal conditions. Since the resultant size scale of the dendritic microstructure influences the overall mechanical properties of the solidified alloy, |
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Bridging Atomistic to Continuum Scales - Multiscale Investigation of Self-Assembling Magnetic Dots in Epitaxial Growth
Sponsor:
NSF
In the fabrication of nanostructures for optoelectronic applications, tremendous advances have been realized in the development of self-assembly methods for semiconductor materials based on heteroepitaxial vapor-phase growth techniques. In particular, so-called directed self-assembly methods have been demonstrated recently based on the use of prepatterned substrates |