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The stretching elasticity of biomembranes determines their line tension and bending rigidity
In this work some implications of a recent model for the mechanical behavior of biological membranes [20] 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.
(Note: Revised pdf file)
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DZ13_BMMB_Revised_new.pdf | 342 KB |
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