[1] Engineering Product Development, Singapore University of Technology and Design, Singapore,487372, Singapore
[2] Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology (Shenzhen), Shenzhen,518055, China
[3] Department of Electrical and Computer Engineering, National University of Singapore, Singapore,117583, Singapore
[4] Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore,138634, Singapore