1. Department of Physics and Materials Science; Center of Super-Diamond and Advanced Films (COSDAF); City University of Hong Kong; Tat Chee Avenue 83 Kowloon Hong Kong China
2. Department of Mechanical and Biomedical Engineering; City University of Hong Kong; Tat Chee Avenue 83 Kowloon Hong Kong China
3. Department of Materials Science and Engineering; WW4-LKO, University of Erlangen-Nuremberg; Martensstrasse 7 D-91058 Erlangen Germany
4. Centre for Advanced Structural Materials; City University of Hong Kong Shenzhen Research Institute; 8 Yuexing 1st Road, Shenzhen Hi-Tech Industrial Park Nanshan District Shenzhen China
5. City University of Hong Kong Shenzhen Research Institute; 8 Yuexing 1st Road, Shenzhen Hi-Tech Industrial Park Nanshan District Shenzhen China