The slow short-time motions of phospholipid molecules with a focus on the influence of multiple scattering and fitting artefacts

Journal article


Publication Details

Author(s): Busch S, Unruh T
Journal: Journal of Physics: Condensed Matter
Publisher: IOP PUBLISHING LTD
Publication year: 2011
Volume: 23
Journal issue: 25
ISSN: 0953-8984
eISSN: 1361-648X


Abstract


Quasi-elastic neutron scattering is a powerful tool for the study of non-periodic motions in condensed matter, as a detailed line shape analysis can give information about the geometry and rate of the scatterers' displacements. Unfortunately, there are also a number of artefacts which can masquerade as signatures of motions and can therefore lead to erroneous results. Their influence on the evaluation of the motions of the phospholipid dimyristoylphosphatidylcholine (DMPC) is discussed. On a 60 ps timescale, the long-range motion of the molecules has a flow-like character with similar velocities above and below the main phase transition. It is proposed that the concepts of dynamical heterogeneities and 'floppy modes' developed in glass physics provide a framework for explaining the observed behaviour.



FAU Authors / FAU Editors

Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)


External institutions
Technische Universität München (TUM)


How to cite

APA:
Busch, S., & Unruh, T. (2011). The slow short-time motions of phospholipid molecules with a focus on the influence of multiple scattering and fitting artefacts. Journal of Physics: Condensed Matter, 23(25). https://dx.doi.org/10.1088/0953-8984/23/25/254205

MLA:
Busch, Sebastian, and Tobias Unruh. "The slow short-time motions of phospholipid molecules with a focus on the influence of multiple scattering and fitting artefacts." Journal of Physics: Condensed Matter 23.25 (2011).

BibTeX: 

Last updated on 2018-10-08 at 15:38