Nonspecular neutron scattering from highly aligned phospholipid membranes
| Autor: | R. Siebrecht, J. Peisl, M. Vogel, C. Münster, Tim Salditt |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
business.industry Scattering Momentum transfer technology industry and agriculture General Physics and Astronomy Neutron scattering Molecular physics Small-angle neutron scattering Reciprocal lattice Membrane Optics lipids (amino acids peptides and proteins) Neutron Neutron reflectometry business |
| Zdroj: | Europhysics Letters (EPL). 46:486-492 |
| ISSN: | 1286-4854 0295-5075 |
| DOI: | 10.1209/epl/i1999-00289-y |
| Popis: | We report a neutron scattering study of multilamellar membranes supported on solid substrates. In contrast to previous work, the high degree of orientational alignment allows for a clear distinction between specular and nonspecular reflectivity contributions. In particular, we demonstrate that by using the specific advantages of neutron optics the nonspecular scattering can be mapped over a wide range of reciprocal space. Several orders of magnitude in scattering signal and parallel momentum transfer can easily be recorded in multilamellar stacks of lipid membranes. This opens up the possibility to study fluctuations, and more generally lateral structure parameters of membrane on length scales between a few A up to several μm. The first results obtained for a system of partially hydrated 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine (DMPC) indicate strong deviations from the predictions of the standard Caille model. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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