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Microscopy-based electrode characterization. (a) Dropsens 220AT electrodes. (b) Dropsens 220BT electrodes. (c) Leaf electrodes. Atomic force microscopy images of the electrodes (ii). Scanning Electron Microscopy images of the electrodes with varying magnifications (iii,iv). The leaf electrodes exhibit nanoscale smoothness and micron-scale undulating features.
