Handbook of Materials Modeling The first reference of its kind in the rapidly emerging field of computational approachs to materials research this is a compendium of perspective providing and topical articles written to inform students and non specialists of the current status and capabilities of modelling and simulation. From the standpoint of methodology the development follows a multiscale approach with emphasis on electronic structure atomistic and mesoscale methods as well as mathematical analysis and rate processes. Basic models are treated across traditional disciplines not only in the discussion of methods but also in chapters on crystal defects microstructure fluids polymers and soft matter. Written by authors who are actively participating in the current development this collection of 150 articles has the breadth and depth to be a major contributor toward defining the field of computational materials. In addition there are 40 commentaries by highly respected researchers presenting various views that should interest the future generations of the community. Subject Editors: Martin Bazant MIT Bruce Boghosian Tufts University Richard Catlow Royal Institution Long Qing Chen Pennsylvania State University William Curtin Brown University Tomas Diaz de la Rubia Lawrence Livermore National Laboratory Nicolas Hadjiconstantinou MIT Mark F. Horstemeyer Mississippi State University Efthimios Kaxiras Harvard University L. Mahadevan Harvard University Dimitrios Maroudas University of Massachusetts Nicola Marzari MIT Horia Metiu University of California Santa Barbara Gregory C. Rutledge MIT David J. Srolovitz Princeton University Bernhardt L. Trout MIT Dieter Wolf Argonne National Laboratory.