title: Effects of surface morphology and anisotropy on the tangential-momentum accommodation coefficient between Pt(100) and Ar.
abstract: In this paper, we study the influence of platinum (100) surface morphology on the tangential-momentum accommodation coefficient with argon using a molecular dynamics method. The coefficient is computed directly by beaming Ar atoms onto the surfaces and measuring the relative momentum changes. The wall is maintained at a constant temperature and its interaction with the gas atoms is governed by the Kulginov potential. To capture correctly the surface effect of the walls and the atoms' trajectories, the quantum Sutton-Chen multibody potential is employed between the Pt atoms. The effects of wall surface morphology, incident direction, and temperature are considered in this work and provide full information on the gas-wall interaction.
authors.affiliation: Laboratoire Modelisation et Simulation Multi Echelle, Université Paris-Est, UMR 8208 CNRS, 5 Boulevard Descartes, 77454 Marne-la-Vallée Cedex 2, France.
authors.forename: Thanh Tung
authors.initials: TT
authors.lastname: Pham
authors.forename: Quy Dong
authors.initials: QD
authors.lastname: To
authors.forename: Guy
authors.initials: G
authors.lastname: Lauriat
authors.forename: Céline
authors.initials: C
authors.lastname: Léonard
authors.forename: Vo Van
authors.initials: VV
authors.lastname: Hoang
mesh_terms: D001128:Argon / Q000737:chemistry*; D003198:Computer Simulation; D004735:Energy Transfer; D008956:Models, Chemical; D008958:Models, Molecular; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D010984:Platinum; D001128:Argon