Affiliation: | 1. Microelectronics Center, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore;2. Institute of Materials Research Engineering, Singapore 117602, Singapore;3. School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore;1. Department of Physics, National Institute of Technology Agartala, Agartala, Tripura, 799046, India;2. Department of Physics, Kazi Nazrul University, Asansol, W. B., 713304, India;3. Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, W. B., India |