1. Micron School of Materials Science and Engineering, Boise State University, Boise, Idaho 83725, United States
2. Center for Advanced Energy Studies, Boise State University, Boise, Idaho 83725, United States
3. Department of Physics, Boise State University, Boise, Idaho 83725, United States
4. Department of Mechanical and Biomedical Engineering, Boise State University, Boise, Idaho 83725, United States
5. Idaho National Laboratory, Idaho Falls, Idaho 83415, United States