Thermal undulations of lipd bilayers relax by intermonolayer friction at sub-micrometer length scales

S. Shkulipa; Wouter K. den Otter; Willem J. Briels

doi:10.1103/PhysRevLett.96.178302

Thermal undulations of lipd bilayers relax by intermonolayer friction at sub-micrometer length scales

S. Shkulipa, Wouter K. den Otter, Willem J. Briels

Faculty of Science and Technology

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The time correlation functions of the thermal undulations of a lipid membrane have been studied by molecular dynamics simulations of a coarse-grained bilayer model. We observe a double-exponential decay, with relaxation rates in good agreement with the theory by Seifert and Langer, [Europhys. Lett. 23, 71 (1993)]. Intermonolayer friction resulting from local velocity differences between the two monolayers is shown to be the dominant dissipative mechanism for fluctuations with wave lengths below ~0.1 µm.

Original language	English
Article number	178302
Number of pages	4
Journal	Physical review letters
Volume	96
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.96.178302
Publication status	Published - 2006

Keywords

METIS-233733
IR-59082

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10.1103/PhysRevLett.96.178302

thermal_undulations
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http://link.aps.org/abstract/PRL/v96/e178302

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title = "Thermal undulations of lipd bilayers relax by intermonolayer friction at sub-micrometer length scales",

abstract = "The time correlation functions of the thermal undulations of a lipid membrane have been studied by molecular dynamics simulations of a coarse-grained bilayer model. We observe a double-exponential decay, with relaxation rates in good agreement with the theory by Seifert and Langer, [Europhys. Lett. 23, 71 (1993)]. Intermonolayer friction resulting from local velocity differences between the two monolayers is shown to be the dominant dissipative mechanism for fluctuations with wave lengths below ~0.1 µm.",

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AB - The time correlation functions of the thermal undulations of a lipid membrane have been studied by molecular dynamics simulations of a coarse-grained bilayer model. We observe a double-exponential decay, with relaxation rates in good agreement with the theory by Seifert and Langer, [Europhys. Lett. 23, 71 (1993)]. Intermonolayer friction resulting from local velocity differences between the two monolayers is shown to be the dominant dissipative mechanism for fluctuations with wave lengths below ~0.1 µm.

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KW - IR-59082

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