1. Sensors & Electron Devices Directorate, U.S. Army Research Laboratory, Adelphi, Maryland 20783, United States
2. Computational
and Information Sciences Directorate, U.S. Army Research Laboratory, Aberdeen
Proving Ground, Maryland 21005, United States
3. Department
of Materials Science and Engineering, and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
4. Department
of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States