1. Department of Applied Physics
2. Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education)
3. Beihang University
4. Beijing 100191
5. People's Republic of China
6. R&D Centre for Vehicle Battery and Energy Storage
7. General Research Institute for Nonferrous Metals
8. Beijing 100088
9. China
10. Department of Mechanical Engineering
11. National University of Singapore
12. Singapore