1. Department of Electronic EngineeringSchool of Electronics Information and Electrical EngineeringShanghai Jiao Tong University Shanghai 200240 China
2. Shanghai Key Laboratory of Electrical Insulation and Thermal AgingDepartment of Polymer Science and EngineeringSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong University Shanghai 200240 China
3. Soft Robotics and Biodesign LabRobotics InstituteSchool of Mechanical EngineeringShanghai Jiao Tong University Shanghai 200240 China