Thermo-mechanic-electrical coupling in phospholipid monolayers near the critical point

Details Thermo-mechanic-electrical coupling in phospholipid monolayers near the critical point Thermo-mechanic-electrical coupling in phospholipid monolayers near the critical point

2010-05-26

arxiv.org/abs/1005.4860v1

Physics

Biological Physics

Scientific paper

Lipid monolayers have been shown to represent a powerful tool in studying mechanical and thermodynamic properties of lipid membranes as well as their interaction with proteins. Using Einstein's theory of fluctuations we here demonstrate, that an experimentally derived linear relationship both between transition entropy S and area A as well as between transition entropy and charge q implies a linear relationships between compressibility \kappa_T, heat capacity c_\pi, thermal expansion coefficient \alpha_T and electric capacity CT. We demonstrate that these couplings have strong predictive power as they allow calculating electrical and thermal properties from mechanical measurements. The precision of the prediction increases as the critical point TC is approached.

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