1. Department of Mechanical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
2. Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
3. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
4. Center for Integrated Nanotechnologies (CINT), Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States