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. Author manuscript; available in PMC: 2020 Apr 15.
Published in final edited form as: ACS Nano. 2019 Feb 6;13(2):1454–1468. doi: 10.1021/acsnano.8b07140

Figure 1.

Figure 1.

Nanotopographies used in this study. Top-view and side-view SEM images of (A) nanoridges and (B) asymmetric sawteeth used in this study. The scale bars in the top- and side-view images are 10 and 1 μm, respectively. (C) Schematic depicting a sawtooth row (blue box) and a sawtooth column (red box), as well as the direction defined as positive.