1. School of Materials Science and Engineering
2. State Key Laboratory of New Ceramics and Fine Processing
3. Tsinghua University
4. Beijing 100084, China
5. Center for Nano and Micro Mechanics
6. National Center for Nanoscience and Technology
7. Beijing 100190, China
8. Tsinghua National Laboratory for Information Science and Technology (TNList)
9. Institute of Microelectronics