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. 2021 Jun 6;13(11):1886. doi: 10.3390/polym13111886

Figure 1.

Figure 1

SEM surface images of PA6 samples coated with thin a-C:H layers from 10 to 100 nm in 10 nm steps (c–l). Additionally, the reference (a) and the O2 plasma-treated PA6 sample (b) are added.