1. Department of Electrical and Electronic Engineering, American International University-Bangladesh (AIUB), Dhaka 1229, Bangladesh
2. Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong
3. Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen 518057, Guangdong, People’s Republic of China