title: Spontaneous two-dimensional spherical colloidal structures.
abstract: Two-dimensional spherical crystalline colloidal structures are formed at the interface between water and oil as the result of spontaneous emulsification and colloidal self-assembly. When water droplets are introduced in oil containing a lipophilic surfactant, smaller water droplets of uniform size are spontaneously produced at the spherical interface. Initially of submicrometer size, the small droplets at the interface self-assemble, forming ordered structures, and grow uniformly with time until they reach a size of a few micrometers, maintaining the crystalline structure.
authors.affiliation: Instituto de Física "Manuel Sandoval Vallarta", Universidad Autónoma de San Luis Potosí, Alvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico.
authors.forename: Héctor
authors.initials: H
authors.lastname: Gonzalez-Ochoa
authors.forename: José Luis
authors.initials: JL
authors.lastname: Arauz-Lara