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- Title
The stretching elasticity of biomembranes determines their line tension and bending rigidity.
- Authors
Deseri, Luca; Zurlo, Giuseppe
- Abstract
In this work, some implications of a recent model for the mechanical behavior of biological membranes (Deseri et al. in Continuum Mech Thermodyn 20(5):255-273, ) are exploited by means of a prototypical one-dimensional problem. We show that the knowledge of the membrane stretching elasticity permits to establish a precise connection among surface tension, bending rigidities and line tension during phase transition phenomena. For a specific choice of the stretching energy density, we evaluate these quantities in a membrane with coexistent fluid phases, showing a satisfactory comparison with the available experimental measurements. Finally, we determine the thickness profile inside the boundary layer where the order-disorder transition is observed.
- Subjects
MECHANICAL properties of biological membranes; CONTINUUM mechanics; BIOLOGICAL membranes; BILAYER lipid membranes; PHASE transitions; EFFECT of stress on animals; MATHEMATICAL models; PHYSIOLOGY
- Publication
Biomechanics & Modeling in Mechanobiology, 2013, Vol 12, Issue 6, p1233
- ISSN
1617-7959
- Publication type
Article
- DOI
10.1007/s10237-013-0478-z