title: Non-spherical shapes of capsules within a fourth-order curvature model.
abstract: We minimize a discrete version of the fourth-order curvature-based Landau free energy by extending Brakke's Surface Evolver. This model predicts spherical as well as non-spherical shapes with dimples, bumps and ridges to be the energy minimizers. Our results suggest that the buckling and faceting transitions, usually associated with crystalline matter, can also be an intrinsic property of non-crystalline membranes.
authors.affiliation: Laboratoire de Physique Statistique, Ecole Normale Superieure, UPMC Univ. Paris 06, Université Paris Diderot, CNRS, 24 rue Lhomond, 75005, Paris, France. oksana@lps.ens.fr
authors.forename: O V
authors.initials: OV
authors.lastname: Manyuhina
authors.forename: J J
authors.initials: JJ
authors.lastname: Hetzel
authors.forename: M I
authors.initials: MI
authors.lastname: Katsnelson
authors.forename: A
authors.initials: A
authors.lastname: Fasolino
mesh_terms: D002214:Capsules / Q000737:chemistry* / Q000378:metabolism; D002462:Cell Membrane / Q000737:chemistry / Q000378:metabolism; D019295:Computational Biology; D003460:Crystallization; D008560:Membrane Fluidity; D008567:Membranes, Artificial; D008954:Models, Biological; D013816:Thermodynamics; D022161:Transport Vesicles / Q000737:chemistry / Q000378:metabolism
chemical_list: D002214:Capsules; D008567:Membranes, Artificial