物理系colloquium：Phase-field-crystal modeling of nonequilibrium solidification systems

報告題目： Phase-field-crystal modeling of nonequilibrium solidification systems 報告人： Zhi-Feng Huang, Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 報告時間： 2013-4-18（周四）16:00 報告地點：理科樓鄭裕彤講堂報告摘要: Continuum field theories have been of continuous great interest in modeling and understanding complex phenomena during materials growth and processing. Traditionally such approaches are featured by the description of long wavelength or coarse-graining scale of a system, while typical material phenomena involve a variety of spatial and temporal scales that interact and couple. The recently developed phase-field-crystal (PFC) methods can overcome such limit of conventional approaches via incorporating microscopic crystalline details into mesoscopic continuum theory. In this talk I will discuss some recent advances in the development of the PFC methodology that bridges different scales, and also its applications to the modeling of some out-of-equilibrium solidification systems that are of large interest, including nanostructure self-assembly in strained solid films, alloy phase separation, dynamics of liquid-solid interface and topological defects, as well as an important lattice pinning effect during materials evolution due to the coupling between micro and meso spatial scales. A short biosketch: Dr. Zhi-Feng Huang received his PhD degree in Physics from TsingHua University, China, and has worked at Cologne University of Germany, University of Toronto, Florida State University, and McGill University before joining Wayne State University in 2006. Currently he is an associate professor of Physics at Wayne State. He was a recipient of the US National Science Foundation CAREER Award in 2009.