title: Specular and diffuse scattering of highly aligned phospholipid membranes.
abstract: We present a quantitative study of specular and diffuse (non-specular) x-ray and neutron reflectivity from highly aligned phospholipid membranes deposited on solid substrates. The height-height correlation function could be obtained from the diffuse scattering without further model assumptions. The results differ significantly from the linear theory of smectic elasticity. We argue that the diffuse scattering is dominated by static liquid-crystalline defects, rather than thermal fluctuations.
authors.affiliation: Sektion Physik der Ludwig-Maximilians-Universität München, Geschwister-Scholl-Platz 1, D-80539 München, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Salditt
authors.forename: C
authors.initials: C
authors.lastname: Münster
authors.forename: J
authors.initials: J
authors.lastname: Lu
authors.forename: M
authors.initials: M
authors.lastname: Vogel
authors.forename: W
authors.initials: W
authors.lastname: Fenzl
authors.forename: A
authors.initials: A
authors.lastname: Souvorov
mesh_terms: D015060:1,2-Dipalmitoylphosphatidylcholine / Q000737:chemistry*; D004058:Diffusion; D008051:Lipid Bilayers / Q000737:chemistry; D008560:Membrane Fluidity; D008563:Membrane Lipids / Q000737:chemistry*; D009502:Neutrons; D012542:Scattering, Radiation; D014961:X-Ray Diffraction
chemical_list: D008051:Lipid Bilayers; D008563:Membrane Lipids; D015060:1,2-Dipalmitoylphosphatidylcholine