1. Centre for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore 639798.
2. Energy Research Institute at NTU (ERI@N), Singapore 637553.
3. Wyss Institute for Biologically Inspired Engineering at Harvard University, 60 Oxford Street, Cambridge, MA 02138, USA.
4. John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
5. Molecular Engineering Laboratory (MEL), Biomedical Sciences Institutes, Agency for Science, Technology, and Research (A*Star), Singapore.
6. Institute of Particle Technology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Haberstrasse 9A, 91058 Erlangen, Germany.
7. School of Biological Sciences, 60 Nanyang Drive, NTU, Singapore 637551.