1. Department of Electrical and Electronic Engineering, University of Melbourne, Melbourne, Victoria 3010, Australia
2. School of Physics, University of Melbourne, Melbourne, Victoria 3010, Australia
3. Melbourne Centre for Nanofabrication (MCN), Clayton, Victoria 3168, Australia
4. Institute of Microengineering (IMT) Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), Ecole Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel 2000, Switzerland
5. Australian Research Council (ARC) Centre of Excellence for Transformative Meta-Optical Systems (TMOS), University of Melbourne, Melbourne, Victoria 3010, Australia