1. Department of Materials Science and Engineering
2. Korea Advanced Institute of Science and Technology
3. Daejeon 34141
4. Republic of Korea
5. Center for High-Resolution Electron Microscopy (CħEM)
6. School of Physical Science and Technology
7. ShanghaiTech University
8. Shanghai 201210
9. China
10. Platform Technology Laboratory
11. Korea Institute of Energy Research
12. Daejeon 34129