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. 2021 May 13;16:3329–3342. doi: 10.2147/IJN.S303770

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© 2021 Yu et al.

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Surface characterization of the samples: (A) SEM images showing the surface topography of samples. SLM group (scale bar = 4 µm) showing waving surface with unmelted titanium particles and spheres, TNN group (scale bar = 100 nm) showing the nano-nets with 100–120 nm in diameter, TNT group (scale bar = 100 nm) showing the well-arranged nanotubes with 70 nm in diameter; (B) Surface roughness profiles of the samples; (C) Water contact angles of the samples.