Wetting properties of the multiscaled nanostructured polymer and metallic superhydrophobic surfaces.
A superhydrophobic surface is produced from industrial grade polymer materials. The surface comprises partly disordered triple-scaled arrays of polyvinylidene fluoride (PVDF) globules. An inherently superhydrophobic metallic surface is produced with polymer template. The mathematical model based on the Cassie-Baxter hypothesis of air trapping under a water drop is built, which gives the apparent contact angle on the manifold-scaled interface. The presence of several scales itself is not a sufficient condition of hydrophobicity of inherently wettable surfaces. The geometrical features favoring the increase of the vapor-water interface fraction are necessary for this phenomenon.
Bormashenko
Edward
E
The College of Judea and Samaria, the Research Institute, 44837, Ariel, Israel. Edward@yosh.ac.il
Stein
Tamir
T
Whyman
Gene
G
Bormashenko
Yelena
Y
Pogreb
Roman
R