1. CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, P. R. China
2. Department of Precision Machinery and Instrumentation, University of Science and Technology of China, Hefei 230026, P. R. China
3. School of Mechanical Engineering and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, P. R. China
4. Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Special Administrative Region, P. R. China
5. Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong Special Administrative Region, P. R. China
6. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, P. R. China