1. State Key Laboratory of Organic‐Inorganic Composites Beijing Laboratory of Biomedical Materials Beijing University of Chemical Technology Beijing 100029 China
2. Department of Mechanics and Engineering Science College of Engineering Peking University Beijing 100871 P. R. China
3. Department of Spine Surgery Beijing Jishuitan Hospital Beijing 100035 China
4. Foshan (Southern China) Institute for New Materials Foshan Guangdong 528200 China