1. Department of Energy Science
2. Center for Artificial Atoms
3. Sungkyunkwan University
4. Suwon-si
5. Republic of Korea
6. School of Chemical and Biological Engineering
7. Seoul National University
8. Seoul
9. Graduate School of Nanoscience and Technology
10. Department of Physics
11. Korea Advanced Institute of Science and Technology
12. Daejeon 34141
13. SKKU Advanced Institute of Nanotechnology (SAINT)