1. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
2. Department of Mechanical Engineering, Advanced Manufacturing Institute, Texas Center for Superconductivity, University of Houston, N207 Engineering Building 1, 4726 Calhoun Road, Houston, Texas 77204, United States
3. National Renewable Energy Laboratory, 15013 Denver West Parkway, Denver, Colorado 80401, United States
4. Rochester Institute of Technology, 84 Lomb Memorial Drive, Rochester, New York 14623, United States