title: Shape evolution of a core-shell spherical particle under hydrostatic pressure.
abstract: The morphological evolution by surface diffusion of a core-shell spherical particle has been investigated theoretically under hydrostatic pressure when the shear modulii of the core and shell are different. A linear stability analysis has demonstrated that depending on the pressure, shear modulii, and radii of both phases, the free surface of the composite particle may be unstable with respect to a shape perturbation. A stability diagram finally emphasizes that the roughness development is favored in the case of a hard shell with a soft core.
authors.affiliation: Université de Poitiers, Institut P', Bâtiment SP2MI, Téléport 2, Futuroscope-Chasseneuil Cedex, France. jerome.colin@univ-poitiers.fr
authors.forename: Jérôme
authors.initials: J
authors.lastname: Colin
mesh_terms: D003198:Computer Simulation; D006874:Hydrostatic Pressure; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D054118:Nanospheres / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size