1. Nano Functional Materials Technology Centre, Material Science and Research Centre, Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
2. NUSNNI-NanoCore, National University of Singapore, Singapore 117411
3. Department of Physics, National University of Singapore, Singapore 117542
4. NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 117456
5. National Institute of Advanced Industrial Science and Technology (AIST), AIST Central 5, Tsukuba 305−8565, Japan
6. Department of Applied Sciences, Tezpur University, Napaam 784028, India
7. Department of Physics, SRM University − AP, Amaravati, Andhra Pradesh 522502, India
8. Yale-NUS College, 16 College Avenue West, Singapore 138527
9. Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575
10. Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore 117603
11. Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583