1. University College Cork, Tyndall National Institute, Lee Maltings, Dyke Parade, Cork T12 R5CP, Ireland
2. Department of Electrical Engineering and Automation, Aalto University, Espoo 02150, Finland
3. Nanotechnology and Integrated Bioengineering Centre, Ulster University, Shore Road, Co Antrim BT37 OQB, Northern Ireland
4. Intel Corporation, 2501 NE Century Blvd., Hillsboro, Oregon 97124, United States