1. School of Biomedical Engineering Shenzhen Campus of Sun Yat‐sen University Shenzhen 518107 P. R. China
2. Biomaterials Research Center School of Biomedical Engineering Southern Medical University Guangzhou 510515 P. R. China
3. Shenzhen Institute for Drug Control Shenzhen Testing Center of Medical Devices Shenzhen 518057 P. R. China
4. State Key Laboratory of Tribology Tsinghua University Beijing 100084 P. R. China