1. State
Key Laboratory for Mechanical Behavior of Materials, School of Materials
Science and Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
2. Key
Laboratory of Biomedical Information Engineering of Education Ministry,
School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
3. Xi’an University, Xi’an, Shaanxi 710065, P. R. China