1. Centre for Biomimetic Sensor Science, Nanyang Technological University, 50 Nanyang Drive 637553, Singapore
2. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue 639798, Singapore
3. Institute of Biologically Inspired Materials, University of Natural Resources and Life Sciences, 1190 Vienna, Austria
4. International Graduate School on Bionanotechnology, University of Natural Resources and Life Sciences, Austrian Institute of Technology and Nanyang Technological University, Giefinggasse 4, 1210 Vienna, Austria
5. BioSensor Technologies, AIT-Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria
6. School of Biological Sciences, Nanyang Technological University, 50 Nanyang Drive 637551, Singapore
7. School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive 637459, Singapore
8. Departments of Biomedical Engineering and Materials Science & Engineering, University of California, Davis, Davis, California 95616, United States