1. Department of Neuroscience and Biomedical Engineering School of Science Aalto University FI‐00076 Espoo Finland
2. Department of Electrical Engineering and Automation School of Electrical Engineering Aalto University FI‐00076 Espoo Finland
3. Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet St., Dist. 10 Ho Chi Minh City 700000 Vietnam
4. Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc Dist Ho Chi Minh City 700000 Vietnam
5. Nanomicroscopy center (NMC) Department of Applied Physics Aalto University 02150 Espoo Finland
6. Department of Chemical and Materials Engineering University of Auckland Auckland 92019 New Zealand
7. MacDiarmid Institute for Advanced Materials and Nanotechnology Wellington 6140 New Zealand