Volume 97, Number 6, March 2012
|Number of page(s)
|Interdisciplinary Physics and Related Areas of Science and Technology
|22 March 2012
The role of inertia and coarse-graining on the transverse modes of lipid bilayers
Georg-August-Universität, Institut für theoretische Physik - Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
Accepted: 27 February 2012
We determine the transverse dispersion relations of a lipid bilayer by generalizing the Seifert-Langer theory to include the bilayer's inertia and its surface tension. Thereby we extend the applicability of the original theory to computer simulations of lipid bilayers with and without solvent, as well as to simulations with and without momentum conservation. We calculate the asymptotic dispersion relations and identify conditions under which propagating modes occur. The theory is compared with simulations of a coarse-grained, solvent-free model, where we extract the transverse dispersion relations by fitting the intermediate scattering function of bilayer undulations. An estimate of the intermonolayer friction is obtained and compared with the result of a Green-Kubo relation.
PACS: 87.16.dm – Mechanical properties and rheology / 87.15.A- – Theory, modeling, and computer simulation / 68.15.+e – Liquid thin films
© EPLA, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.