Richard LeSar
summer 2006, after spending many
years in a variety of positions at Los
Alamos National Laboratory. The photos
show Northern New Mexico, Costa Rica, Honduras, and Mali, some of my favorite places.
My research has been varied over the years, spanning from molecular solids to metals and then back to molecular systems, as shown in my resume, which is available in the link to the right.
Current research topics:
Teaching:
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• modeling and simulation of materials
Recent Publications:
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1.“Dislocation dynamics simulation of plastic anisotropy in fcc single crystals in high rate deformation,” Z. Q. Wang, I. J. Beyerlein, and R. LeSar, International Journal of Plasticity 25, 26–48 (2009). http://dx.doi.org/10.1016/j.ijplas.2008.01.006
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2.“Slip band formation and mobile density generation in high rate deformation of single fcc crystals,” Z. Q. Wang, I. J. Beyerlein, and R. LeSar, Philosophical Magazine 88, 1321-1343 (2008). http://dx.doi.org/10.1080/14786430802129833
3. “The impact of obstacles on dislocation patterning and stress correlations,” M. Haataja, J. M. Rickman, and R. LeSar, Physical Review B 77, 174105 (2008). http://dx.doi.org/10.1103/PhysRevB.77.174105
4. “Importance of cross slip in high rate deformation,” Z. Q. Wang, I. J. Beyerlein, and R. LeSar, Modelling and Simulation of Materials Science and Engineering 15, 675-690 (2007). http://dx.doi.org/10.1088/0965-0393/15/6/006
5. “Dislocation motion in high-strain-rate deformation.” Z. Q. Wang, I. J. Beyerlein, and R. LeSar, Philosophical Magazine 87, 2263–2279 (2007). http://dx.doi.org/10.1080/14786430601153422
6. “A parallel algorithm for 3D dislocation dynamics,” Z. Wang, N. Ghoniem, S. Swaminarayan, and R. LeSar, Journal of Computational Physics 219, 608–621 (2006).
http://dx.doi.org/10.1016/j.jcp.2006.04.005
7. “Direct measurements of scale-free intermittent flow in crystal plasticity,” D. M. Dimiduk, C. Woodward, R. LeSar, and M. D. Uchic, Science 312, 1188-1190 (2006).
http://dx.doi.org/10.1126/science.1123889
8. “Energetics and noise in dislocation patterning,” Robb Thomson, M. Koslowski, and R. LeSar, Physical Review B 73, 024104 (2006).
http://dx.doi.org/10.1016/j.msea.2005.02.086
9. “Preface to the viewpoint set on: Statistical Mechanics and Coarse Graining of Dislocation Behavior for Continuum Plasticity,” D. M. Dimiduk, M. Koslowski, and R. LeSar, Scripta Materialia 54, 701-704 (2006). http://dx.doi.org/10.1016/j.scriptamat.2005.11.027
10. “Issues in the coarse graining of dislocation energetics and dynamics,” J. M. Rickman and R. LeSar, Scripta Materialia 54, 735-739 (2006). http://dx.doi.org/10.1016/j.scriptamat.2005.11.030
11. “Theoretical predictions of new high-performance lead-free ferroelectrics,” P. Baettig, C. Schelle, R. LeSar, U. Waghmare and N. Spaldin, Chemistry of Materials 17, 1376– 1380 (2005).
http://dx.doi.org/10.1021/cm0480418
12. “Unified framework for dislocation-based defect energetics,” J. M. Rickman, Jorge Vinals, and R. LeSar, Philosophical Magazine 9, 917–929 (2005).
http://dx.doi.org/10.1080/14786430412331314618
13. “A kinetic Monte Carlo simulation of thin film growth by physical vapor deposition under substrate rotation,” J. Cho, S. G. Terry, C. G. Levi, and R. LeSar, Materials Science and Engineering A 391, 390–401 (2005).
http://dx.doi.org/10.1016/j.msea.2004.09.015