1. The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China
2. Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
3. Institute for Health Innovation & Technology, National University of Singapore, Singapore 117599, Singapore
4. Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore 117583, Singapore