1. State Key Laboratory for Mechanical Behavior of Materials
2. Xi’an Jiaotong University
3. Xi’an 710049
4. China
5. Center for Nanotechnology and Molecular Materials
6. Department of Physics
7. Wake Forest University
8. Winston-Salem
9. USA
10. School of Materials Science and Engineering
11. Jiangsu University
12. Zhenjiang 212013