Samples

Surface Morphology by SEM

Average Roughness R_a (μm) by Profilometer

SSPN

Smooth surface with very fine rolling marks aligned in one direction and parallel to each other

0.025

SSDN

Smooth surface with very fine rolling marks aligned in one direction and parallel to each other

0.024

SSOP

Rough surface with a lot of scratches.

Average scratch width = 1.075 μm [Min. width ~ 0.2425 μm, Max. width ~ 3.341 μm]

0.153