The microscopic dynamics of lipid multibilayer POPC system in the gel phase and at the gel-liquid phase transition were investigated by means of incoherent quasi-elastic neutron scattering and compared with the dynamics previously observed in the liquid phase.
Knoll, "Local dynamics of lipid bilayers studied by incoherent quasi-elastic neutron scattering," EPL, vol.
International Conference on Quasi-Elastic Neutron Scattering
(8th: 2006: Bloomington, IN) Ed.
Finally, quasi-elastic neutron scattering
is used to characterize the water dynamics.
Our aim is to study the influence of porous media on the dynamics of free and bound water in hydrogels using two neutron techniques: quasi-elastic neutron scattering (QENS) and neutron transmission (1) in order to probe liquid motions in different ranges of observation times: [10.sup.-10] - [10.sup.-12] sec (microscopic measurements) and [10.sup.2]-[10.sup.-4] sec (macroscopic measurements).
Using quasi-elastic neutron scattering, information on microscopic dynamics of water molecules may be extracted from the energy broadening [Delta]E of quasi-elastic neutron peaks measured at different values of the wave vector transfer q = (4[Pi]/[Lambda]) sin ([Theta]/2), where [Lambda] is the neutron wavelength.