Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study

West B, Schmid F (2010)
SOFT MATTER 6(6): 1275-1280.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Autor/in
;
Abstract / Bemerkung
We study the stress distribution profiles and the height and thickness fluctuations of lipid membranes in the gel L-beta ' state by Monte Carlo simulations of a generic coarse-grained model for lipid membranes, which reproduces many known properties of dipalmitoylphosphatidyncholine (DPPC) bilayers. The results are related to the corresponding properties of fluid membranes, and to theoretical predictions for crystalline and hexatic membranes. One striking observation is that the spontaneous curvature of the monolayers changes sign from the fluid to the gel phase. In the gel-phase, the long-wavelength height fluctuations are suppressed, and the fluctuation spectrum is highly anisotropic. In the direction of tilt, it carries the signature of soft modes with wavelengths compatible to those of the ripple phase P-beta ', which emerges in the transition region between the fluid and the gel state. In the direction perpendicular to the tilt, the thickness fluctuations are almost entirely suppressed, and the height fluctuations seem to be dominated by an interfacial energy, i.e., by out-of-layer fluctuations, up to length scales of tens of nanometres.
Erscheinungsjahr
2010
Zeitschriftentitel
SOFT MATTER
Band
6
Ausgabe
6
Seite(n)
1275-1280
ISSN
1744-683X
eISSN
1744-6848
Page URI
https://pub.uni-bielefeld.de/record/1795859

Zitieren

West B, Schmid F. Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study. SOFT MATTER. 2010;6(6):1275-1280.
West, B., & Schmid, F. (2010). Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study. SOFT MATTER, 6(6), 1275-1280. doi:10.1039/b920978f
West, B., and Schmid, F. (2010). Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study. SOFT MATTER 6, 1275-1280.
West, B., & Schmid, F., 2010. Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study. SOFT MATTER, 6(6), p 1275-1280.
B. West and F. Schmid, “Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study”, SOFT MATTER, vol. 6, 2010, pp. 1275-1280.
West, B., Schmid, F.: Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study. SOFT MATTER. 6, 1275-1280 (2010).
West, Beate, and Schmid, Friederike. “Fluctuations and elastic properties of lipid membranes in the gel L-beta ' state: a coarse-grained Monte Carlo study”. SOFT MATTER 6.6 (2010): 1275-1280.