Abstract
Interfaces are ubiquitous in modern technology. These include interfaces within a given material (e.g., grain boundaries) and interfaces between different materials (e.g., in microelectronics). The complexity of these structures has led to a multiplicity of different structural models. Even for a given type of interface, there are disparate structural models for the description of different properties. In this presentation, the speaker will present a single model of interfaces, based on some simple ideas from crystallography. He will then apply this model to describe how interfaces roughen, migrate, slide, and interact with deformation within the crystals. Finally, he’ll take a step back and consider how this all fits into a picture of how microstructures (collections of interfaces) evolve. His goal is to provide a new, rigorous view of how interfaces in materials “work."
About the speaker
Prof David Srolovitz received his MSc and PhD degrees, both in materials science, from the University of Pennsylvania. His previous positions include Executive Director of the Institute of High Performance Computing and Scientific Director of A*STAR's Science and Engineering Research Council in Singapore, Dean of Yeshiva College at Yeshiva University, and Chair of Department of Mechanical and Aerospace Engineering at Princeton University. He is currently the Joseph Bordogna Professor of Engineering and Applied Science in the University of Pennsylvania, where he holds a joint appointment in the Departments of Materials Science and Engineering and Mechanical Engineering and Applied Mechanics.
Prof Srolovitz conducts research in defects in materials, growth of materials, evolution of the microstructure and morphology of materials, and the mechanical deformation of materials. He does this through the development and application of analytical theory and a wide range of computational modeling techniques, ranging from the quantum mechanical to atomistic to microstructural to continuum. He has coauthored more than 400 publications with over 15,000 citations in the areas of crystal defects, microstructure, and morphology and their evolution with papers appearing in venues such as Nature, Science, Proceedings of the National Academy of Sciences, Physical Review Letters, Nano Letters and Acta Materialia. He is particularly well known for his work on surface stability, grain growth and film growth.
Prof Srolovitz was elected to be a Member of US National Academy of Engineering in 2015 for his accomplishments in "theory and simulation of microstructure and properties of materials and leadership in computational materials engineering." He is also a Fellow of the Materials Research Society (MRS), the Minerals, Metals and Materials Society (TMS), the Institute of Physics in UK, and ASM International. He was awarded the MRS Materials Theory Award in 2013.
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