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Winter 2008 Seminar Series
Friday, 2/15, at 3:30 p.m.
Room 264 MacQuigg Labs
Daniel J. Lacks
C. Benson Branch Professor of Chemical Engineering,
Case Western Reserve University
Interplay of Aging, Structure and Mechanical Deformation in Glassy Materials
Abstract
The mechanical properties of a material are determined by the material structure. Conversely, the structure of glassy materials is altered by mechanical deformation. This interplay of structure and mechanical deformation is intertwined with physical aging, which is the slow change of the properties of glassy materials with time. Furthermore, the structure at the atomic level may be modified by introducing structure at the nanoscale level. We use molecular simulations and an energy landscape analysis to elucidate the connections between the atomic level structure and mechanical deformation, aging, and nano-scale structure. Our analysis is applied to a range of systems including polymer, silica and metallic glasses.
Bio
Daniel J. Lacks is the C. Benson Branch Professor of Chemical Engineering at Case Western Reserve University. Prof. Lacks received his undergraduate degree in chemical engineering at Cornell University in 1987, and his Ph.D. in chemistry at Harvard University in 1992. Following a postdoctoral position at the Massachusetts Institute of Technology, Prof. Lacks joined the chemical engineering faculty at Tulane University in 1994. In 2003, Prof. Lacks moved to his current position in the chemical engineering faculty at Case. Prof. Lacks's research program uses statistical mechanics and molecular simulations to investigate the properties of materials.
Please join our speaker for light refreshments in 479 Watts Hall following the talk.
