Fig. 4From: Low-temperature large-area fabrication of ZnO nanowires on flexible plastic substrates by solution-processible metal-seeded hydrothermal growthSEM images showing hydrothermal ZNW growth results using (a, b) no seed and (c–e) drop-cast seed coatings. Enlarged SEM images (1–4) shown in e are taken from four different spots marked in (d). All growths are done at 90 °C for 150 minBack to article page