Fluid membrane vesicles in confinement

We numerically study the morphology of fluid membrane vesicles with the prescribed volume and surface area in confinement. For spherical confinement, we observe axisymmetric invaginations that transform into ellipsoidal invaginations when the area of the vesicle is increased, followed by a transitio...

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Main Authors: Osman Kahraman, Norbert Stoop, Martin Michael Müller
Format: Article
Language:English
Published: IOP Publishing 2012-01-01
Series:New Journal of Physics
Online Access:https://doi.org/10.1088/1367-2630/14/9/095021
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author Osman Kahraman
Norbert Stoop
Martin Michael Müller
author_facet Osman Kahraman
Norbert Stoop
Martin Michael Müller
author_sort Osman Kahraman
collection DOAJ
description We numerically study the morphology of fluid membrane vesicles with the prescribed volume and surface area in confinement. For spherical confinement, we observe axisymmetric invaginations that transform into ellipsoidal invaginations when the area of the vesicle is increased, followed by a transition into stomatocyte-like shapes. We provide a detailed analysis of the axisymmetric shapes and investigate the effect of the spontaneous curvature of the membrane as a possible mechanism for shape regulation. We show that the observed morphologies are stable under small geometric deformations of the confinement. The results could help us to understand the role of mechanics in the complex folding patterns of biological membranes.
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spelling doaj.art-51c52f58c2b148e0bce43b6fd8e4a16c2023-08-08T11:02:58ZengIOP PublishingNew Journal of Physics1367-26302012-01-0114909502110.1088/1367-2630/14/9/095021Fluid membrane vesicles in confinementOsman Kahraman0Norbert Stoop1Martin Michael Müller2Equipe BioPhysStat, ICPMB-FR CNRS 2843, Université de Lorraine, 1 , boulevard Arago, 57070 Metz, FranceComputational Physics for Engineering Materials, ETH Zurich, Schafmattstrasse 6, HIF, CH-8093 Zurich, Switzerland; Institute for Applied Simulations, Zurich University of Applied Sciences (ZHAW) , PO Box CH-8820 Wädenswil, SwitzerlandEquipe BioPhysStat, ICPMB-FR CNRS 2843, Université de Lorraine, 1 , boulevard Arago, 57070 Metz, FranceWe numerically study the morphology of fluid membrane vesicles with the prescribed volume and surface area in confinement. For spherical confinement, we observe axisymmetric invaginations that transform into ellipsoidal invaginations when the area of the vesicle is increased, followed by a transition into stomatocyte-like shapes. We provide a detailed analysis of the axisymmetric shapes and investigate the effect of the spontaneous curvature of the membrane as a possible mechanism for shape regulation. We show that the observed morphologies are stable under small geometric deformations of the confinement. The results could help us to understand the role of mechanics in the complex folding patterns of biological membranes.https://doi.org/10.1088/1367-2630/14/9/095021
spellingShingle Osman Kahraman
Norbert Stoop
Martin Michael Müller
Fluid membrane vesicles in confinement
New Journal of Physics
title Fluid membrane vesicles in confinement
title_full Fluid membrane vesicles in confinement
title_fullStr Fluid membrane vesicles in confinement
title_full_unstemmed Fluid membrane vesicles in confinement
title_short Fluid membrane vesicles in confinement
title_sort fluid membrane vesicles in confinement
url https://doi.org/10.1088/1367-2630/14/9/095021
work_keys_str_mv AT osmankahraman fluidmembranevesiclesinconfinement
AT norbertstoop fluidmembranevesiclesinconfinement
AT martinmichaelmuller fluidmembranevesiclesinconfinement