Pore formation and rupture in fluid bilayers
- 1 April 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 53 (4), 3875-3885
- https://doi.org/10.1103/physreve.53.3875
Abstract
Structure and stability of fluid bilayers under stress are examined by modeling lipid as diblock copolymer and solvent as homopolymer. The model is solved using self-consistent field theory, and equilibrium phases are determined. We find that on increasing the stress applied to the bilayer, one of two scenarios occurs depending upon the architecture of the lipid. Either the bilayer ruptures, or pores form within it and condense into a regular array. In the former case, the fractional increase in area from its unstressed value is found to be approximately 2% at rupture, in satisfactory agreement with experiment. In the latter, the pores appear and disappear reversibly with the stress, in accord with experiment. We find the pores to be slightly hydrophobic. © 1996 The American Physical Society.Keywords
This publication has 29 references indexed in Scilit:
- Physical properties of the fluid lipid-bilayer component of cell membranes: a perspectiveQuarterly Reviews of Biophysics, 1991
- Electro-mechanical permeabilization of lipid vesicles. Role of membrane tension and compressibilityBiophysical Journal, 1989
- Physical properties of surfactant bilayer membranes: thermal transitions, elasticity, rigidity, cohesion and colloidal interactionsThe Journal of Physical Chemistry, 1987
- Temperature dependence of the yield shear resultant and the plastic viscosity coefficient of erythrocyte membrane. Implications about molecular events during membrane failureBiophysical Journal, 1982
- Electro-mechanical properties of human erythrocyte membranes: The pressure-dependence of potassium permeabilityThe Journal of Membrane Biology, 1980
- Constitutive relation for red cell membrane. CorrectionBiophysical Journal, 1976
- Membrane viscoplastic flowBiophysical Journal, 1976
- Electrical Breakdown of Bimolecular Lipid Membranes as an Electromechanical InstabilityBiophysical Journal, 1973
- Mechanical Properties of the Red Cell MembraneBiophysical Journal, 1964
- Mechanical Properties of the Red Cell MembraneBiophysical Journal, 1964