1. State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Nanjing P. R. China
2. College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing P. R. China
3. National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering College of Engineering and Applied Science and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing P. R. China
4. Department of Physics Southern University of Science and Technology Shenzhen P. R. China
5. School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing China