1. State Key Laboratory of Tribology Department of Mechanical Engineering Tsinghua University Beijing 100084 China
2. Beijing Key Laboratory of Precision/Ultra‐Precision Manufacture Equipment and Control Tsinghua University Beijing 100084 China
3. Center for Bio‐Intelligent Manufacturing and Living Matter Bioprinting, Research Institute of Tsinghua University in Shenzhen Tsinghua University Shenzhen 518057 China