1. School of Chemistry, Xi’an Jiaotong University, Xi’an 710049, P. R. China
2. Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an 710049, P. R. China
3. The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, P. R. China
4. Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan 430072, P. R. China