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. 2017 Jun 28;2(6):2985–2993. doi: 10.1021/acsomega.7b00041

Figure 1.

Figure 1

SEM morphologies at increasing magnifications (left to right, low to high) of different Q1D ZnO nano- and microwires synthesized by the FTS approach on Si substrates. (a–c) Homogeneous array of hexagonally faceted Q1D ZnO nanowires. (d–f) Array of Q1D ZnO nano- and microwires with smooth surfaces. (g–i) Side-view SEM images of a dense array of relatively longer (>200 μm length) Q1D ZnO nano- and microwires grown on a Si substrate. These Q1D ZnO microwires are very well interconnected with the base and are almost homogeneous in diameter (bottom to top) with a sharp needle-like tip at their ends. The growth of smaller flower-like ZnO nanostructures on their tips is mainly due to secondary growth (the denser array of wires favors growth on the tips).