VESICLES OF TOROIDAL TOPOLOGY - OBSERVED MORPHOLOGY AND SHAPE TRANSFORMATIONS

Publication Type:

Journal Article

Source:

JOURNAL DE PHYSIQUE II, EDITIONS PHYSIQUE, Volume 5, Number 2, Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE, p.263-287 (1995)

Keywords:

CURVATURE ELASTICITY; MECHANISM; MEMBRANES; TETHER FORMATION; TUBULES

Abstract:

We report observations of toroidal vesicles with circular and noncircular cross sections, axisymmetric and nonaxisymmetric. Shape transformations induced by temperature changes are also described, which permit a connection to a mathematical conjecture due to Willmore. Our observations are analysed using a numerical procedure which allows a determination of the relevant geometrical parameters of the shapes. We compare these observations with recent theoretical predictions and point out some unexpected properties of the observed equilibrium shapes.