TY  - JOUR
AU  - Kruteva, Margarita
TI  - Dynamics studied by Quasielastic Neutron Scattering (QENS)
JO  - Adsorption
VL  - 27
IS  - 5
SN  - 0929-5607
CY  - Dordrecht [u.a.]
PB  - Springer Science + Business Media B.V
M1  - FZJ-2021-05937
SP  - 875 - 889
PY  - 2021
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000613967000001
DO  - DOI:10.1007/s10450-020-00295-4
UR  - https://juser.fz-juelich.de/record/904367
ER  -