1. Agency for Science, Technology and Research (A*STAR), Institute of Materials Research and Engineering (IMRE), 2 Fusionopolis Way, Singapore 138634, Singapore
2. Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), Institute of Sustainability for Chemical, 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
3. Department of Biomedical Engineering, National University of Singapore (NUS), 4 Engineering Drive 3, Singapore 117583, Singapore
4. School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Block N4.1, Singapore 639798, Singapore
5. Department of Materials Science and Engineering, National University of Singapore (NUS), 9 Engineering Drive, Singapore 117576, Singapore