As an example, the image shows a patterned 3D nanocoating on glass consisting of 5 μm hydrophobic lines separated by 10 μm gaps. The nanocoating is highly hydrophobic (water contact angle >130°, measured on a non-patterned surface). The patterned nanocoating was analyzed by spectroscopic imaging ellipsometry, resulting in a thickness map of the surface, as shown in the image. The ellipsometric map shows that the nanocoating has a thickness of approximately 80 nm. Furthermore, the data indicate that the nanocoating has a certain degree of porosity and roughness, consistent with the very high water contact angle.