1. Data Storage Institute, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-01 Innovis, Singapore 138634
2. LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, The Photonics Institute, School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
3. Department of Electrical and Electronic Engineering, Department of Physics, UNAM – The National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, Ankara 06800, Turkey