1. Division of Chemical and Biomolecular Engineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459
2. Translational Molecular Imaging Group, Singapore Bioimaging Consortium, 11 Biopolis Way, Singapore 138667
3. Division of Materials Science, School of Material Science and Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 637459
4. Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602