1. Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
2. Singapore Institute for Neurotechnology, National University of Singapore, 28 Medical Drive, #05-COR, Singapore 117456, Singapore
3. Hybrid-Integrated Flexible (Stretchable) Electronic Systems Program, National University of Singapore, 5 Engineering Drive 1, Singapore 117608, Singapore
4. NUS Suzhou Research
Institute (NUSRI), Suzhou Industrial Park, Suzhou 215123, P. R. China