1. Center for Advanced Materials Research, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
2. Department of Metallurgical, Materials and Biomedical Engineering, University of Texas, 500 West University Avenue, El Paso, Texas 79968, United States
3. Department of Mechanical Engineering, University of California, Santa Barbara, California 93106-5070, United States
4. Materials Department, University of California, Santa Barbara, California 93016-5050, United States
5. Department of Mechanical Engineering, University of Texas, 500 West University Avenue, El Paso, Texas 79968, United States