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Issue 2, 2014
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Freezing of stressed bilayers and vesicles

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We show using a minimalistic theoretical framework that phase transition decoupling in lipid bilayers is caused by a nonuniform stress profile due to an asymmetric distribution of lipids between the two leaflets. Applying this framework to vesicles, we demonstrate that their anomalous freezing is also caused by a stress asymmetry, but that this is due to lipid tail extension on freezing. Finally, we predict a previously unknown dependence of surface tension on temperature, find the phenomenon also in coarse grained molecular dynamics simulations, and suggest that it might have relevance in thermosensitive protein gating.

Graphical abstract: Freezing of stressed bilayers and vesicles

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The article was received on 16 Sep 2013, accepted on 05 Nov 2013 and first published on 08 Nov 2013

Article type: Communication
DOI: 10.1039/C3SM52432A
Soft Matter, 2014,10, 257-261

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    Freezing of stressed bilayers and vesicles

    A. Lamberg and T. Taniguchi, Soft Matter, 2014, 10, 257
    DOI: 10.1039/C3SM52432A

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