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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 Evolution 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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NSF-EC Cooperative Activity in Computational Materials Research: Bridging Atomistic to Continuum Scales - Multiscale Investigation of Self-Assembling Magnetic Dots During Epitaxial Growth
Sponsor:
NSF DMR-0502737
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 |
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Collaborative Research: Three-Dimensional Mapping of Solid Oxide Fuel Cell Electrodes: Processing, Structure, Stability, and Electro-chemistry
Sponsor:
NSF DMR-0542619
The solid oxide fuel cell (SOFC) is one of the most promising clean energy converting devices because of its low pollutant emissions, superior operation tolerance, and high conversion efficiency. The lifetime of commercially viable SOFCs is on the order of 50,000 hours. Therefore, |
Ion-cut Synthesis for Materials Integration
Sponsor:
NSF CMMI-0700301
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Simulations of Lipid Membranes Coupling Composition with DeformationLipid membranes are an interesting system: since the lipid molecules composing the bilayer are held together only with hydrophobic interactions rather than chemical bonds, they form a liquid-like structure constrained in two dimensions. Experimentally, it has been found that lipid bilayers and |
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CAREER: Integrated Research and Education Program in Three-Dimensional Materials Science and Visualization
Sponsor:
NSF DMR-0746424
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MURI: Hyperspectral and Extreme Light Diagnostics for Defense-Critical Advanced Materials and Processes
Sponsor:
AFOSR
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Center for Radiative Shock Hydrodynamics (CRASH)
Sponsor:
DOE
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FRG: Collaborative Research: Mathematical Modeling of Rechargeable Batteries
Sponsor:
NSF DMS-0842504
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Three-Dimensional Evolution of Dendritic Mixtures
Sponsor:
Northwestern University (DOE)
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