Journal Article

FZJ-2021-05937

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dynamics studied by Quasielastic Neutron Scattering (QENS)

Kruteva, M. (Corresponding author)FZJ*

2021
Springer Science + Business Media B.V Dordrecht [u.a.]

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Please use a persistent id in citations: doi:10.1007/s10450-020-00295-4  doi:10.34734/FZJ-2021-05937

Abstract: Quasielastic neutron scattering (QENS) allows measurement of the molecular displacements in time and space, from pico- to tens of nanoseconds and from Ångstroms to nanometers, respectively. The method probes dynamics from fast vibrational modes down to slow diffusive motion. Every scattering experiment leads to a dynamic structure factor S(Q⃗ ,ω) or its spatial and temporal Fourier transform (van Hove correlation function G(r⃗ ,t)). This shows exactly where the atoms are and how they move. In this manuscript the basics of the QENS method are presented and a few examples highlighting the potentials of QENS are given: (i) diffusion of liquids and gases in nano- and mesoporous materials; (ii) hydrogen dynamics in a high temperature polymer electrolyte fuel cell (HT-PEFC) and (iii) influence of the surface interactions on polymer dynamics in nanopores.

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Contributing Institute(s):

1. Neutronenstreuung (JCNS-1)
2. Neutronenstreuung und biologische Materie (IBI-8)

Research Program(s):

1. 633 - Life Sciences – Building Blocks of Life: Structure and Function (POF4-633) (POF4-633)
2. 5251 - Multilevel Brain Organization and Variability (POF4-525) (POF4-525)
3. 5241 - Molecular Information Processing in Cellular Systems (POF4-524) (POF4-524)
4. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Springer ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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