Email this article Refined dynamic structure factor of a lipid bilayer on scales comparable to its thickness
- Authors: Zakhvataev V.E.1,2
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Affiliations:
- Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences,”
- Siberian Federal University
- Issue: Vol 125, No 1 (2017)
- Pages: 167-173
- Section: Statistical, Nonlinear, and Soft Matter Physics
- URL: https://journals.rcsi.science/1063-7761/article/view/192405
- DOI: https://doi.org/10.1134/S106377611706005X
- ID: 192405
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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.
About the authors
V. E. Zakhvataev
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences,”; Siberian Federal University
Author for correspondence.
Email: v.09@mail.ru
Russian Federation, ul. Akademgorodok 50, Krasnoyarsk, 660036; pr. Svobodnyi 79, Krasnoyarsk, 660041
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