Temperature dependence of vesicle adhesion
- 12 January 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 71 (1), 011903
- https://doi.org/10.1103/physreve.71.011903
Abstract
The influence of thermal fluctuations on the adhesion behavior of fluid vesicles is investigated with the help of Monte Carlo simulations. The adhesion area A(ad) of a fluid vesicle adhering to a smooth attractive substrate is studied systematically for different values of temperature, adhesion strength, and potential range. For low temperatures T , the ratio A(ad) /A between the adhesion area and the total area A of the vesicle is a linear function of T/kappa , where kappa is the bending rigidity. Linear fits of the simulation data allow an extrapolation to T=0 which corresponds well with data obtained from a simplified analytic model. A new ansatz for A(ad) (T) which is based on the eigenmodes of the adhering vesicle explains the linear behavior of A(ad) (T) for low T and helps to define a fit function which reproduces the linear behavior of the obtained simulation data. This fit function may be used in order to determine the bending rigidity and the adhesion strength from the observed adhesion geometry.Keywords
This publication has 20 references indexed in Scilit:
- Atomic force microscopy of nanometric liposome adsorption and nanoscopic membrane domain formationUltramicroscopy, 2003
- Stable adhesion of phospholipid vesicles to modified gold surfacesBiosensors and Bioelectronics, 2002
- Colloidal adhesion of phospholipid vesicles: high-resolution reflection interference contrast microscopy and theoryColloids and Surfaces B: Biointerfaces, 2002
- Surface-attached polymer monolayers for the control of endothelial cell adhesionColloids and Surfaces A: Physicochemical and Engineering Aspects, 2002
- A minisensor for the rapid screening of sucralose based on surface-stabilized bilayer lipid membranesBiosensors and Bioelectronics, 2000
- Structure and activity of lipid membrane biosensor surfaces studied with atomic force microscopy and a resonant mirrorBiosensors and Bioelectronics, 2000
- Binding of Lipid Vesicles to Protein-Coated Solid Polymer Surfaces: A Model for Cell Adhesion to Artificial Biocompatible MaterialsJournal of Colloid and Interface Science, 2000
- Imaging vesicle adhesion by Evanescent Wave-Induced FluorescenceEurophysics Letters, 1999
- Resonances of the hydrogen atom in strong parallel magnetic and electric fieldsPhysical Review A, 1995
- Measurements of forces involved in vesicle adhesion using freeze-fracture electron microscopyLangmuir, 1990