November 1, 2006FRONTIERS IN MATERIALS SCIENCE
VINSE COLLOQUIUM SERIES
*Keynote Speaker 2006 Nano Forum
Dr. Uzi Landman
Fuller E. Callaway Chair in Computational Materials Science
Director, Center in Computational Materials Science
Regents and Institute Professor, School of Physics
Georgia Institute of Technology
"Small is Different: Emergent Physics and Chemistry at the Nanoscale"
Abstract. Gaining insights into the nature of physical and chemical systems of highly reduced sizes, and developing experimental and theoretical methodologies aimed at probing, manipulating and controlling them on the atomic and molecular level, are among the major challenges of current basic interdisciplinary research. Computationally-based theoretical modeling and simulations play an increasingly important role in modern condensed matter physics, chemistry, materials science, and biology. In particular, such studies, that may be called “computational microscopies”, allow explorations of complex phenomena with refined resolution in space and time .
Emergent physical and chemical phenomena at the nanoscale regime and the use of atomistic simulations as tools of discovery in this area will be discussed and demonstrated through studies of: nanojets and nano-bridges, the atomic-scale origins of friction, the surprising nanocatalytic activity of gold nanoclusters, mechanisms of hole transport and oxidation damage of DNA, electron attachment to water clusters, and formation of electron and boson-molecules in quantum dots and traps.
1. U. Landman, “Materials by Numbers: Computations as Tools of Discovery”, perspective article in Proc. Nat. Acad. Sci. (USA) 102, 6671 (2005).