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Static water and oil contact angle (CAw and CAo, respectively), and film roughness.
| Sample | CAw (deg) | CAo (deg) | Ra (nm) | Rq (nm) |
|---|---|---|---|---|
| Uncoated PET side | 67.7 ± 0.9 | 28.5 ± 5.9 | 1.14 | 1.39 |
| SiOx side | 21.5 ± 0.9 | 26.6 ± 2.3 | 0.305 | 0.373 |
CAw: water contact angle; Cao: oil contact angle; Ra: Roughness Average (i.e., arithmetic average of the absolute values of the roughness profile ordinates; Rq: Root Mean Square Roughness (i.e., root mean square average of the roughness profile ordinates).
