1. Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
2. Institute for Health Innovation and Technology, National University of Singapore, Singapore 117599, Singapore
3. Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
4. The N.1 Institute for Health, National University of Singapore, Singapore 117456, Singapore
5. Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore