Influence of surface roughness on superhydrophobicity
arXiv:cond-mat/0604052 · doi:10.1103/PhysRevLett.97.116103
Abstract
Superhydrophobic surfaces, with liquid contact angle theta greater than 150 degree, have important practical applications ranging from self-cleaning window glasses, paints, and fabrics to low-friction surfaces. Many biological surfaces, such as the lotus leaf, have hierarchically structured surface roughness which is optimized for superhydrophobicity through natural selection. Here we present a molecular dynamics study of liquid droplets in contact with self-affine fractal surfaces. Our results indicate that the contact angle for nanodroplets depends strongly on the root-mean-square surface roughness amplitude but is nearly independent of the fractal dimension D_f of the surface.
5 Pages, 6 figures. Minimal changes with respect to the previous version
References in corpus (3)
Cited by in corpus (12)
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