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. 2019 Dec 18;10(1):5. doi: 10.3390/nano10010005

Figure 1.

Figure 1

SEM images of top-surface (a), cross-section (b) and bottom-surface (c) of anodized aluminum oxide nanochannel templates that were anodized at 70 V for 2 h. The electrolytic solution temperature was kept at 25 °C during the anodization.