title: Interface-mediated interactions: entropic forces of curved membranes.
abstract: Particles embedded in a fluctuating interface experience forces and torques mediated by the deformations and by the thermal fluctuations of the medium. Considering a system of two cylinders bound to a fluid membrane, we show that the entropic contribution enhances the curvature-mediated repulsion between the two cylinders. This is contrary to the usual attractive Casimir force in the absence of curvature-mediated interactions. For a large distance between the cylinders, we retrieve the renormalization of the surface tension of a flat membrane due to thermal fluctuations.
authors: Institut Fourier, UMR 5582 CNRS-UJF, Université Grenoble I, Saint-Martin d'Hères, France.
authors: Pierre
authors: P
authors: Gosselin
authors: Hervé
authors: H
authors: Mohrbach
authors: Martin Michael
authors: MM
authors: Müller
mesh_terms: D002462:Cell Membrane / Q000378:metabolism*; D019277:Entropy; D008560:Membrane Fluidity; D008954:Models, Biological