1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue 639798, Singapore
2. Centre for Biomimetic
Sensor Science, Nanyang Technological University, 50 Nanyang Drive 637553, Singapore
3. Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk 630090, Russia
4. School
of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive 637459, Singapore