title: The Influence of Long-Range Surface Forces on the Contact Angle of Nanometric Droplets and Bubbles.
abstract: For a droplet or a bubble of dimensions below 100 nm, long-range surface forces such as long-range van der Waals forces can compete with capillarity, which leads to a size dependence of the contact angle. This is discussed in this work, where we also show that the effect cannot simply be described by a normalized line tension. We calculate interfacial profiles for typical values of van der Waals forces and discuss the role of long-range surface forces on the contact angle of nanobubbles and nanodrops.
authors.affiliation: Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-University of Montpellier , Montpellier F-34095, France.|DWI - Leibniz-Institut für Interaktive Materialien , Aachen 52056, Germany.
authors.forename: Antonio
authors.initials: A
authors.lastname: Stocco
authors.affiliation: Max Planck Institute of Colloids and Interfaces , Potsdam 14476, Germany.
authors.forename: Helmuth
authors.initials: H
authors.lastname: Möhwald