1. Center for Advanced Materials Research (CMR), 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 at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
3. Environmental Molecular Sciences Laboratory (EMSL), Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
4. Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
5. Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
6. Materials Department, University of California, Santa Barbara, California 93106-5050, United States