1. Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
2. National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
3. Hysitron, Incorporated, 10025 Valley View Road, Minneapolis, Minnesota 55344, United States
4. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
5. Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, 710049, China