1. Program of Materials Science and Engineering, University of California San Diego, La Jolla, California 92093, United States
2. Department of Mechanical and Aerospace Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, West Virginia 26506, United States
3. Department of Physics, Brown University, Providence, Rhode Island 02912, United States
4. Sandia National Laboratories, Livermore, California 94551, United States
5. School of Engineering, Brown University, Providence, Rhode Island 02912, United States
6. Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
7. Materials Science Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
8. School of Materials Science and Engineering, Hebei University of Engineering, Handan, Hebei Province 056038, China
9. Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, West Virginia 26506, United States
10. Department of NanoEngineering, University of California San Diego, La Jolla, California 92093, United States