The wetting problem of fluids on solid surfaces: Dynamics of lines and contact angle hysteresis
| dc.creator | Gouin, Henri | |
| dc.date | 2008-01-21 | |
| dc.date.accessioned | 2026-07-07T08:55:37Z | |
| dc.date.available | 2026-07-07T08:55:37Z | |
| dc.description | In 1805, Young was the first who introduced an expression for contact angle in static, but today, the motion of the contact-line formed at the intersection of two immiscible fluids and a solid is still subject to dispute. By means of the new physical concept of line viscosity, the equations of motions and boundary conditions for fluids in contact on a solid surface together with interface and contact-line are revisited. A new Young-Dupré equation for the dynamic contact angle is deduced. The interfacial energies between fluids and solid take into account the chemical heterogeneities and the solid surface roughness. A scaling analysis of the microscopic law associated with the Young-Dupré dynamic equation allows us to obtain a new macroscopic equation for the motion of the contact-line. Here we show that our theoretical predictions fit perfectly together with the contact angle hysteresis phenomenon and the experimentally well-known results expressing the dependence of the dynamic contact angle on the celerity of the contact-line. We additively get a quantitative explanation for the maximum speed of wetting (and dewetting). | |
| dc.description | 8 pages | |
| dc.identifier | https://arxiv.org/abs/0801.3162 | |
| dc.identifier | http://arxiv.org/abs/0801.3162 | |
| dc.identifier | Journal de Physique IV Colloque 11, PR6 (2001) 261-269 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/146330 | |
| dc.subject | Classical Physics | |
| dc.title | The wetting problem of fluids on solid surfaces: Dynamics of lines and contact angle hysteresis | |
| dc.type | text |