Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, Epiciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Triple-line kinetics for solid films

Abstract : We present a derivation of the triple-line kinetic boundary conditions for a solid film in contact with a solid substrate for both nonconserved (evaporation-condensation) and conserved (surface diffusion) dynamics. The result is obtained via a matched asymptotic expansion from a mesoscopic model with a thickness-dependent wetting potential (or disjoining pressure) and mobility. In the nonconserved case, we obtain a single boundary condition, which relates the triple-line velocity with the deviation of the contact angle from its equilibrium value. In the conserved case, two kinetic boundary conditions are needed. They relate the velocity and mass flux at the triple line to the contact angle deviation and discontinuity of the chemical potential. These linear relations are described by three kinetic coefficients. The conditions under which the kinetic coefficients remain finite are obtained. We find, for example, that some kinetic coefficients diverge within the conserved model in the presence of van der Waals interaction.
Document type :
Journal articles
Complete list of metadata
Contributor : Marie-Gabrielle Chautard Connect in order to contact the contributor
Submitted on : Thursday, February 11, 2021 - 11:32:10 AM
Last modification on : Tuesday, May 11, 2021 - 9:54:30 AM
Long-term archiving on: : Wednesday, May 12, 2021 - 6:42:05 PM


Publisher files allowed on an open archive




Ashwani K. Tripathi, Olivier Pierre-Louis. Triple-line kinetics for solid films. Physical Review E , American Physical Society (APS), 2018, 97 (2), pp.022801. ⟨10.1103/PhysRevE.97.022801⟩. ⟨hal-02289856⟩



Record views


Files downloads