Fig. 4.
Strategy 2: Microelectrode Development. (A) CNS grown on Nb wire had improved sensitivity for dopamine detection. SEM Scale bar is 200 nm. Reproduced from 61 with the permission from The Royal Society of Chemistry. (B) Nafion/CNT-modified CFME increased dopamine current. The black arrow points to the CNT surface. Reproduced from 72 with the permission from The Royal Society of Chemistry. (C) Polycrystalline BDD on parylene coating alleviated fouling. SEM scale bar is 100 μm. Inset shows diamond microcrystal with a scale bar of 10 μm. Reproduced from 37 with CC-BY license, published by Frontiers Media SA. (D) PEDOT-PC/CFME alleviated fouling. Normalized current-time trace of PEDOT-PC/CFME (red) compared to PEDOT/CFME (blue), PEDOT-OH/CFME (green), and bare CFME (black). Reproduced from 38 with permission from Wiley. (E) Laser-treated CNTYME had a micrometer roughness that allowed a thin-layer cell that improve temporal resolution without signal loss. Scale bar is 500 nm. Reprinted from 65. Copyright 2016 American Chemical Society. (F) Cavity CNPE allowed redox cycling and frequency-independent current. Reprinted from 92. Copyright 2019 American Chemical Society.