Argonne National Laboratory

Upcoming Events

Watching Microstructure Evolve

Series 
APS Colloquium
Presenter 
Peter W. Voorhees, Northwestern University
June 5, 2013 3:00PM to 4:00PM
Location 
Building 402, Auditorium
Type 
Colloquium

Peter Voorhees will present "Watching Microstructure Evolve" at the next APS Colloquium Wednesday, June 5, at 3 p.m. in the APS 402 Auditorium.

Abstract:
With the advent of high-energy X-ray sources it is now possible to follow micro-structural evolution in three dimensions and as a function of time (4D). The ability to observe and quantify the evolution of a microstructure provides fundamentally new insights into this complex process.

This is especially true of microstructures that have complicated interfacial morphologies, such as two-phase mixtures that are produced following dendrititc solidification. Examples of the 4D results, and insights into the evolution of these two-phase mixtures during coarsening will be given. In addition, a multimodel X-ray imaging approach for systems in which the atomic density contrast is small and where accurate interfacial morphology is required will also be discussed.

Biography:
Peter W. Voorhees is the Frank C. Engelhart Professor of Materials Science and Engineering and a professor in the Department of Engineering Sciences and Applied Mathematics at Northwestern and codirector of the Northwestern-Argonne Institute for Science and Engineering. He is a computational materials expert whose research employs theory, simulation, and experiment in areas ranging from nanotechnology and energy to four-dimensional microscopy.

Voorhees’s numerous awards include the National Science Foundation’s Presidential Young Investigator Award; ASM International’s Silver Medal in the Materials Science Division and J. Willard Gibbs Phase Equilibria Award; the Minerals, Metals, and Materials Society’s Bruce Chalmers Award; the McCormick School’s Award for Teaching Excellence; and listing as a “highly cited researcher” by the Institute for Scientific Information.