1. Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 P. R. China
2. BIC‐ESATCollege of EngineeringPeking University Beijing 100871 P. R. China
3. Key Laboratory for Photonic and Electronic Bandgap MaterialsMinistry of EducationSchool of Physics and Electronic EngineeringHarbin Normal University Harbin 150025 P. R. China
4. Key Laboratory of Functional Materials Physics and ChemistryMinistry of EducationCollege of PhysicsJilin Normal University Siping 136000 P. R. China
5. Key Laboratory of Textile Science & TechnologyMinistry of EducationCollege of TextilesDonghua University Shanghai 201620 P. R. China
6. State Key Laboratory for Strength and Vibration of Mechanical StructuresSchool of Aerospace EngineeringXi'an Jiaotong University Xi'an 710049 P. R. China