@article{ref1,
title="Sealing is at the origin of rubber slipping on wet roads",
journal="Nature materials",
year="2004",
author="Tosatti, E. and Albohr, O. and Tartaglino, U. and Persson, B. N. J.",
volume="3",
number="12",
pages="882-885",
abstract="Loss of braking power and rubber skidding on a wet road is still an open physics problem, as neither the hydrodynamic effects nor the loss of surface adhesion that are sometimes blamed really manage to explain the 20-30% observed loss of low-speed tyre-road friction. Here we report a novel mechanism based on sealing of water-filled substrate pools by the rubber. The sealed-in water effectively smoothens the substrate, thus reducing the viscoelastic dissipation in bulk rubber induced by surface asperities-well established as a major friction contribution. Starting with the measured spectrum of asperities one can calculate the water-smoothened spectrum and from that the predicted friction reduction, which is of the correct magnitude. The theory is directly supported by fresh tyre-asphalt friction data.<p /> <p>Language: en</p>",
language="en",
issn="1476-1122",
doi="10.1038/nmat1255",
url="http://dx.doi.org/10.1038/nmat1255"
}