Abteilung Angewandte Physik, Universität Ulm - D-89069 Ulm, Germany
Corresponding author: email@example.com
Accepted: 31 August 2000
It is shown that a certain class of self-affine profiles of surface roughness may render any substrate with a non-zero microscopic contact angle non-wet, i.e., give it a macroscopic contact angle close to 180 degrees. This is in some contrast to previous work and not only of potential applicational interest, but may also contribute to the amazing water repellency of some plant leaves.
PACS: 68.10.Cr – Surface energy / 68.35.Ct – Interface structure and roughness / 68.45.Gd – Wetting
© EDP Sciences, 2000