| abstract |
The article (10) comprising an antifouling surface (12)is provided. The surface (12) comprises a material having a nominal liquid wettability sufficient to generate, with reference to an oil, a nominal contact angle of at least about 30 degrees; and a texture comprising a plurality of features (16) disposed on the surface. The features (16) have a size, shape, and orientation selected such that the surface (12) has an effective wettability sufficient to generate, with reference to an oil, an effective contact angle greater than the nominal contact angle. The features (16) comprise a height dimension (20) (h), a width dimension (22) (a), a spacing dimension (b) such that, ratio b/a is less than about 4, and ratio h/a is less than about 10. In one embodiment, a turbine component comprising an antifouling surface (12) is provided. |