1. Centre for Advanced Structural Materials, City University of Hong Kong Shenzhen Research Institute, Greater Bay Joint Division, Shenyang National Laboratory for Materials Science, Shenzhen 518000, China
2. Hong Kong Branch of National Precious Metals Material Engineering Research Centre, City University of Hong Kong, Hong Kong 999077, China
3. Laboratory of Nanomaterials & Nanomechanics, City University of Hong Kong, Hong Kong 999077, China
4. Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China
5. CityU-Shenzhen Futian Research Institute, Shenzhen 518000, China
6. State Key Laboratory of Terahertz and Millimeter Waves, Department of Electrical Engineering, City University of Hong Kong, Hong Kong 999077, China