1. Department of Engineering Mechanics, Institute of Biomechanics and Medical Engineering, AML, Tsinghua University, Beijing 100084, China
2. Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
3. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
4. CAS Key Laboratory of Mechanical Behavior and Design of Materials, and Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230026, China