1. School of Electronic and Information Engineering
2. State Key Laboratory for Mechanical Behavior of Materials
3. Xi'an Jiaotong University
4. Xi'an 710049
5. China
6. Department of Materials Science and Engineering
7. Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices
8. Southern University of Science and Technology
9. Shenzhen 518055
10. The Pennsylvania State University
11. Pennsylvania 16802
12. USA