Affiliation: | 1. School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore;2. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore;3. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Centre for Advanced Microscopy, Australian National University, Sullivan's Creek Road, Canberra ACT 2601, Australia |