1. Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 P. R. China
2. Chemical Science and Engineering CollegeKey Laboratory of Chemical Engineering and TechnologyNorth Minzu University Yinchuan Ningxia 750021 P. R. China
3. Key Laboratory of Textile Science and TechnologyMinistry of EducationCollege of TextilesDonghua University Shanghai 201620 P. R. China
4. Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 P. R. China
5. BIC‐ESATCollege of EngineeringPeking University Beijing 100871 P. R. China