1. Key Laboratory of Bionic Engineering
2. Ministry of Education
3. Jilin University
4. Changchun 130022
5. People's Republic of China
6. Department of Engineering Mechanics
7. Center for Flexible Electronics Technology
8. Center for Mechanics and Materials
9. Tsinghua University
10. Beijing 100084
11. College of Materials Science and Engineering
12. Department of Mechanical Engineering
13. Columbia University
14. New York
15. USA