Fig. 1
From: Direct printing of metal oxide nanostructures for wearable electrochemical sensing

(a) Schematic illustration of plasma-aided inkjet printing of metal oxide nanostructures onto a screen-printed electrode for electrochemical sensing applications, (b) Top-view SEM image showing nanoparticle size and surface distribution of the plasma-printed Zinc Oxide (ZnO) layer, (c) Cross-sectional SEM micrograph highlighting the thickness and internal structure of the printed Zinc Oxide (ZnO) layer.