Table 3 Fractal and statistical descriptors of the TNAs structures on final stages of their fabrication process derived from SEM images: D – fractal dimension, τ – corner frequency, Str – anisotropy ratio.

From: Evolution of rough-surface geometry and crystalline structures of aligned TiO2 nanotubes for photoelectrochemical water splitting

Sample

D1

D2

τ1 [nm]

τ2 [nm]

Str

#4

2.45

—

35

—

0.56

#5

2.84

2.97

25

1100

0.49

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