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Values of measured contact angle on surfaces of different materials. The source of data for first five surfaces was given in Ref. 5, and the contact angles on the last two surfaces were reported in Refs. 20 and 21.
| Surface | Contact angle |
|---|---|
| Glass | 5°–15°; 29° |
| Wood | 62°–74° |
| Stainless steel | 32° |
| Cotton | 41°–62° |
| Smartphone screen | 74°–94° |
| N95 mask | 97°–99° |
| PVC-coated surface | 80°–84° |
