In Memory of Maria C. Bartelt
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MEMORY OF MARIA C. BARTELT Fall 2004 MRS Symposium JJ: Modeling of Morphological Evolution at Surfaces and Interfaces, and these associated e-proceedings, are dedicated to the memory of Maria C. Bartelt. Maria passed away at age 41 on June 23, 2003 due to complications from an opportunistic infection. Maria had been battling non-Hodgkins lymphoma for a year and a half. From early 2002 until the time of her death, Maria was the Scientific Capability Leader for the Computational Materials Science Group in the Chemical and Materials Science (CMS) Directorate at Lawrence Livermore National Laboratory (LLNL). She was interim leader of the Biophysical and Interface Science Group in CMS at LLNL during 2001, after having joined LLNL as a Staff Physicist in 2000. Previously, she was a Staff Physicist at Sandia National Laboratories – Livermore from 1996-1999, and a Postdoctoral Researcher at the Institute of Physical Research and Technology, Iowa State University from 1991-1996. She received her Ph.D. in Statistical Physics from Clarkson University, Potsdam, NY, in 1991, and her M.Sc. in 1989. She obtained a B.Sc. in Physics from Universidade do Porto, Portugal, in 1982, and a Diploma in 1984. (The photograph above was taken at the graduation ceremony for this Diploma. Students graduating in Science dress in a light blue hat and uniform for the ceremony.)
Maria was internationally recognized for her fundamental contributions to epitaxial thin film growth and to materials science. These studies covered such topics as: submonolayer nucleation and growth of two-dimensional islands during deposition (particularly, a precise analysis of the island size distribution and its scaling properties); multilayer kinetic roughening in epitaxial thin film growth where a “mounding instability” occurs due to the presence of a step-edge barrier to downward transport (with analysis including detailed comparison between simulated and experimental growth morphologies); analysis of diffusion-mediated etch pit and adatom island growth (and specifically of the dependence of growth on the local pit or island environment); and strain-induced self-organization of nanostructures on surfaces (such as vacancy island arrays in heteroepitaxial overlayers). Utilizing her background in Statistical Physics, Maria’s work brought a sophisticated and precise level of analysis to these complex and highly cooperative non-equilibrium surface phenomena. She received great satisfaction from successfully applying this level of analysis to specific materials systems, thereby providing detailed insight into the behavior of those systems. Her other recent investigations involved a diverse array of topics such as: electromigration and interconnect failure; dislocation network dynamics in complex plastic zones; and near-equilibrium growth of molecular crystals from solution. Her early studies in Statistical Physics made substantial contributions to such classic problems as lattice animal statistics, directed percolation, and Random Sequential Adsorption (RSA). Maria was
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