1. Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, United States
2. Army Research Directorate, U.S. DEVCOM Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
3. SURVICE Engineering, Inc. DEVCOM Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
4. Applied Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States