Thermodynamics of a Lipid Membrane with Curvature

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In this paper, we consider the lateral bending of the membrane surface and the lateral pressure profile in the neutral part of the membrane (the neutral part is the part of the membrane where no work is done to change the pressure). They are chosen in such a way as to calculate the given law of curvature change. Next, the lateral pressure along the thickness of the curved membrane is obtained. Computing the pressure profile along the thickness of the monolayer involves some difficulties. The formulas for these and other characteristics such as spontaneous bending moment, Gauss modulus for different phases and torsional modulus Ktw = K2 are given here. The formula for the lateral pressure profile in a membrane with curvature is obtained using the renormalization group.

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Sobre autores

A. Drozdova

National University of Science and Technology “MISIS”

Autor responsável pela correspondência
Email: annafonalex@gmail.com
Rússia, Moscow, 119049

Bibliografia

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2. Fig. 1. Normal pressure profile in DPPC membrane with monolayer thickness L0 = 1.5 nm.

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3. Fig. 2. Lateral pressure distribution in a DLPC membrane with radius curvature R = 31.4 nm, J = 1/R is the curvature of the upper monolayer (see Table 1).

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