Solid-supported lipid multilayers: structure factor and fluctuations.
We present a theoretical description of the thermal fluctuations in a solid-supported stack of lipid bilayers, for the case of vanishing surface tension gamma = 0 and in the framework of continuous smectic elasticity. The model is successfully used to model the reflectivity profile of a thin (16 bilayers) DMPC sample under applied osmotic pressure and the diffuse scattering from a thick (800 bilayers) stack. We compare our model to previously existing theories.
Institut für Röntgenphysik, Geiststraße 11, 37073 , Göttingen, Germany. dconsta@gwdg.de.
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D
Constantin
Institut für Röntgenphysik, Geiststraße 11, 37073 , Göttingen, Germany.
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U
Mennicke
Institut für Röntgenphysik, Geiststraße 11, 37073 , Göttingen, Germany.
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C
Li
Institut für Röntgenphysik, Geiststraße 11, 37073 , Göttingen, Germany.
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T
Salditt
D003198:Computer Simulation; D004134:Dimyristoylphosphatidylcholine / Q000737:chemistry*; D004548:Elasticity; D008051:Lipid Bilayers / Q000737:chemistry*; D046911:Macromolecular Substances; D008560:Membrane Fluidity; D008567:Membranes, Artificial; D008958:Models, Molecular; D008968:Molecular Conformation; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013500:Surface Tension; D013696:Temperature; D014961:X-Ray Diffraction / Q000379:methods*
D008051:Lipid Bilayers; D046911:Macromolecular Substances; D008567:Membranes, Artificial; D004134:Dimyristoylphosphatidylcholine