ALS Postdoctoral Scholar, LBNL
Luis W. Alvarez Postdoctoral Fellow, LBNL
Staff Scientist, LBNL
Affiliate Faculty, UCSF
Assistant Scientist, Advanced Photon Source , ANL
CAMERA Postdoctoral Fellow, LBNL
Distinguished corporate fellow, Center For Nanophase Materials Sciences, ORNL
Staff Scientist, Molecular Foundry, LBNL
Theory and Modeling Group Leader, Center for Nanoscale Materials, ANL