2011/03/22 by Sebastian Büsch, Busch, Sebastian, Tobias Unruh +1
Biochemistry, Genetics and Molecular Biology · Chemistry · Materials Science · Physics and Astronomy · #Data Analysis #FOS: Physical sciences #Lipid Membrane Structure and Behavior #Material Dynamics and Properties #Molecular spectroscopy and chirality #Protein Structure and Dynamics #Soft Condensed Matter (cond-mat.soft) #Spectroscopy and Quantum Chemical Studies #Statistics and Probability (physics.data-an)
paper · pdf · doi:10.48550/arxiv.1103.4336
openalex publication_date 2011/03/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Quasielastic neutron scattering is a powerful tool for the study of\nnon-periodic motions in condensed matter as a detailed line shape analysis can\ngive information about the geometry and rate of the scatterers' displacements.\nUnfortunately, there are also a number of artifacts which can masquerade as\nsignatures of motions and can therefore lead to erroneous results. Their\ninfluence on the evaluation of the motions of the phospholipid\ndimyristoylphosphatidylcholine (DMPC) is discussed. On a 60 ps time scale, the\nlong-range motion of the molecules has a flow-like character with similar\nvelocities above and below the main phase transition. It is proposed that the\nconcepts of dynamical heterogeneities and "floppy modes" developed in glass\nphysics provide a framework to explain the observed behaviour.\n