Abstract
The structural inhomogeneity of a lipid bilayer is an obstacle to applying the classical Canham–Helfrich model to describe its dynamics on nanometer length scales. In this paper, a refined expression for the free energy of a single-component lipid bilayer is used to describe the dynamics of lipid density fluctuations. In particular, the expression with a term involving the gradient of the area per lipid [8] is used for the free energy per lipid. A refined expression has been derived for the dynamic structure factor of a free lipid bilayer in the hydrodynamic region. It leads to differences in the interpretation and values of the bilayer parameters in comparison with the standard model.
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Original Russian Text © V.E. Zakhvataev, 2017, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2017, Vol. 152, No. 1, pp. 197–204.
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Zakhvataev, V.E. Refined dynamic structure factor of a lipid bilayer on scales comparable to its thickness. J. Exp. Theor. Phys. 125, 167–173 (2017). https://doi.org/10.1134/S106377611706005X
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DOI: https://doi.org/10.1134/S106377611706005X