1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Singapore, 138634
2. School of Chemistry, The University of Sydney, Camperdown, NSW 2050, Australia
3. Singapore Centre for 3D Printing, Nanyang Technological University, 65 Nanyang Drive, Singapore, 639798
4. School of Materials Science and Engineering, College of Engineering, Nanyang Technological University, Singapore, 639798
5. Institute of Sustainability for Chemicals, Energy and Environment, Agency for Science, Technology and Research (A*STAR), Singapore, 627833
6. Department of Materials Science and Engineering, College of Design and Engineering, National University of Singapore, Singapore, 117575