1. Key Laboratory of Additive Manufacturing Materials of Zhejiang Province; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China
2. Department of Physics; Harbin Institute of Technology; Harbin 150001 China
3. Key Laboratory of Marine Materials and Protection Technologies of Zhejiang Province Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China
4. Key Laboratory of Graphene Technologies and Applications of Zhejiang Province; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China