This title appears in the Scientific Report :
2021
Please use the identifier:
http://hdl.handle.net/2128/26445 in citations.
Please use the identifier: http://dx.doi.org/10.1107/S1600576720014739 in citations.
Understanding near-surface polymer dynamics by a combination of grazing-incidence neutron scattering and virtual experiments
Understanding near-surface polymer dynamics by a combination of grazing-incidence neutron scattering and virtual experiments
Neutron spin-echo spectroscopy is a unique experimental method for the investigation of polymer dynamics. The combination of neutron spin-echo spectroscopy with grazing-incidence geometry (GINSES) opens the possibility to probe the dynamics of soft-matter materials in the vicinity of the solid subst...
Saved in:
Personal Name(s): | Kyrey, Tetyana (Corresponding author) |
---|---|
Ganeva, Marina / Witte, Judith / von Klitzing, Regine / Wellert, Stefan / Holderer, Olaf | |
Contributing Institute: |
JCNS-FRM-II; JCNS-FRM-II Heinz Maier-Leibnitz Zentrum; MLZ Neutronenstreuung; JCNS-1 JCNS-4; JCNS-4 |
Published in: | Journal of applied crystallography, 54 (2021) 1, |
Imprint: |
[S.l.]
Wiley-Blackwell
2021
|
DOI: |
10.1107/S1600576720014739 |
Document Type: |
Journal Article |
Research Program: |
Grenzflächennahe Dynamik nicht quervernetzter und quervernetzter Polymerarchitekturen auf festen planaren Oberflächen Data Management and Analysis Jülich Centre for Neutron Research (JCNS) (FZJ) |
Subject (ZB): | |
Link: |
OpenAccess Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1107/S1600576720014739 in citations.
Neutron spin-echo spectroscopy is a unique experimental method for the investigation of polymer dynamics. The combination of neutron spin-echo spectroscopy with grazing-incidence geometry (GINSES) opens the possibility to probe the dynamics of soft-matter materials in the vicinity of the solid substrate in the time range up to 100 ns. However, the usage of the GINSES technique has some peculiarities and, due to the novelty of the method and complexity of the scattering geometry, difficulties in further data analysis occur. The current work discusses how virtual experiments within the distorted-wave Born approximation using the BornAgain software can improve GINSES data treatment and aid the understanding of polymer dynamics in the vicinity of the solid surface. With two examples, poly(N-isopropyl acrylamide) brushes and poly(ethylene glycol) microgels on Si surfaces, the simulation as well as the application of the simulation to the GINSES data analysis are presented. The approach allowed a deeper insight to be gained of the background effect and scattering contribution of different layers. |