1. Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore
2. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, People’s Republic of China
3. School of Materials Science and Engineering, Hubei Polytechnic University, Hubei, People’s Republic of China
4. Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore
5. Department of Physics, Faculty of Science, National University of Singapore, Singapore, Singapore
6. NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore
7. National Metrology Centre (NMC), A*STAR, Singapore, Singapore