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- Title
A Statistical Model for Short-Wavelength Collective Chain Fluctuations in a Lipid Bilayer under a High External Electric Field.
- Authors
Zakhvataev, V. E.
- Abstract
The influence of a high (~1 V/nm) external electric field on biological soft matter systems has been widely studied for a long time. However, a detailed understanding of the behavior of density fluctuations in such systems under a high electric field is still an open problem. Here, we develop a statistical model of short-wavelength density fluctuations in the hydrophobic region of a lipid bilayer in an external quasistatic uniform electric field. Using this model, we derive the Brillouin components of the dynamic structure factor of the system from first principles. We also compare the results of the developed theory with new results of molecular dynamics simulations on the initiation of lipid bilayer electropores to show a nearly perfect agreement. We show that the presented theory could be applied to handle a broad range of similar soft matter systems as well as nonpolar dielectric fluids.
- Subjects
ELECTRIC fields; BILAYER lipid membranes; STATISTICAL models; MOLECULAR dynamics; LIQUID dielectrics; LIPIDS
- Publication
JETP Letters, 2021, Vol 114, Issue 6, p362
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S002136402118003X