1. School of Materials Science and Engineering, Beihang University, Beijing 100191, P. R. China
2. Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
3. IT4Innovations, VSB-Technical University of Ostrava, 17.listopadu 2172/15, CZ-70800 Ostrava, Czech Republic
4. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States