| Affiliation: | 1. Department of Electrical and Computer Engineering, National University of Singapore, Singapore;2. Graduate School for Integrative Sciences and Engineering, National University of Singapore, Centre for Life Sciences (CeLS), Singapore, Singapore;3. Institute of Materials Research and Engineering Agency for Science Technology and Research (A*STAR), Innovis, Singapore;4. College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, China;5. School of Physics & Astronomy, University of Birmingham, Birmingham, UK |
