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Issue 37, 2017
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Propagation of a thermo-mechanical perturbation on a lipid membrane

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Abstract

The propagation of sound waves on lipid monolayers supported on water has been previously studied during the melting transition. Since changes in volume, area, and compressibility in lipid membranes have biological relevance, the observed sound propagation is of paramount importance. However, it is unknown what would occur on a lipid bilayer, which is a more approximate model of a cell membrane. With the aim to answer this relevant question, we built an experimental setup to assemble long artificial lipid membranes. We found that if these membranes are heated in order to force local melting, a thermo-mechanical perturbation propagates a long distance. Our findings may support the existence of solitary waves, postulated to explain the propagation of isentropic signals together with the action potential in neurons.

Graphical abstract: Propagation of a thermo-mechanical perturbation on a lipid membrane

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Article information


Submitted
17 May 2017
Accepted
31 Aug 2017
First published
31 Aug 2017

Soft Matter, 2017,13, 6555-6561
Article type
Paper

Propagation of a thermo-mechanical perturbation on a lipid membrane

M. I. Pérez-Camacho and J. C. Ruiz-Suárez, Soft Matter, 2017, 13, 6555
DOI: 10.1039/C7SM00978J

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