%0 Journal Article
%J PHYSICAL REVIEW LETTERS
%D 1992
%T EXPERIMENTAL AND THEORETICAL-STUDY OF TOROIDAL VESICLES
%A FOURCADE, B
%A MUTZ, M
%A Bensimon, David
%C ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
%I AMERICAN PHYSICAL SOC
%K CELL
%K LIPID TUBULES
%K MEMBRANES
%K MINIMUM ENERGY
%K SHAPE TRANSFORMATIONS
%K SURFACES
%P 2551-2554
%V 68
%X We report the observation of toroidal and higher genus vesicles of diacetylenic phospholipids, a class of polymerizable amphiphiles. When unpolymerized, the vesicles exhibit different toroidal shapes in quantitative agreement with recent theoretical predictions. When partially polymerized, only a specific family of shapes has been observed: the Clifford torus or the branch of nonaxisymmetric shapes obtained by its conformal transformations. Assuming that partially polymerized vesicles are permeable on short time scale, we give a physical explanation of our findings. We also report the results of a variational calculation which approximates the nonaxisymmetric shape problem for finite spontaneous curvature.
%8 APR 20
%9 Article