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. 2020 Feb 12;10:2438. doi: 10.1038/s41598-020-59395-4

Figure 1.

Figure 1

Scanning electron microscopy images of titanium substrates. Bare flat surfaces of titanium substrates with (A) 0.6 nm surface roughness with no grains and (B) 1.7 nm surface roughness with single nanosized grains. Titanium substrates with a line and groove pattern with a height of 100 nm (C) and 200 nm pitch (D), and line and groove pattern with a height of 10 nm (E).