Preprint Article Version 1 This version is not peer-reviewed

Measurements of Dynamic Contributions to Coherent Neutron Scattering

Version 1 : Received: 13 July 2018 / Approved: 13 July 2018 / Online: 13 July 2018 (10:51:53 CEST)

How to cite: Jaksch, S.; Koutsioubas, A.; Mattauch, S.; Holderer, O.; Frielinghaus, H. Measurements of Dynamic Contributions to Coherent Neutron Scattering. Preprints 2018, 2018070231 (doi: 10.20944/preprints201807.0231.v1). Jaksch, S.; Koutsioubas, A.; Mattauch, S.; Holderer, O.; Frielinghaus, H. Measurements of Dynamic Contributions to Coherent Neutron Scattering. Preprints 2018, 2018070231 (doi: 10.20944/preprints201807.0231.v1).

Abstract

In this manuscript we are investigating the contribution of dynamic membrane properties of phospholipid membranes to coherent scattering signals under grazing incidence. Spectroscopic measurements under grazing incidence can provide useful insight into the properties of biological membranes, however are often impeded by weak signals. By using grazing-incidence small-angle neutron scattering (GISANS) to identify a dynamic scattering contribution we are able to independently corroborate the existence of a previously found dynamic mode found by grazing-incidence neutron spin echo spectroscopy (GINSES). Additionally, by increasing the speed of measurement compared to GINSES from several days to hours we were able to explore the temperature behavior of this mode in phospholipid membranes. These dynamic modes of the membranes show a wavelength of around 700 Å in-plane of the membrane and are most pronounced around 37°C and strongly decrease at lower temperatures below 25°C before vanishing at 20°C. We therefore speculate that they may be linked to biologically relevant functions of the membranes themselves.

Subject Areas

phospholipids; membranes; GISANS; GINSES; coherent scattering; spectroscopy

Readers' Comments and Ratings (0)

Leave a public comment
Send a private comment to the author(s)
Rate this article
Views 0
Downloads 0
Comments 0
Metrics 0
Leave a public comment

×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.