Possible mechanisms of dielectric relaxation of liquid water and calculation of the temperature dependence of the complex permittivity of water

2005 ◽  
Vol 98 (6) ◽  
pp. 919-933 ◽  
Author(s):  
V. I. Gaiduk ◽  
S. A. Nikitov
Keyword(s):  
Temperature Dependence ◽  
Dielectric Relaxation ◽  
Liquid Water ◽  
Complex Permittivity

Investigation of the temperature dependence of dielectric relaxation in liquid water by THz reflection spectroscopy and molecular dynamics simulation

1997 ◽  
Vol 107 (14) ◽  
pp. 5319-5331 ◽  
Author(s):  
Cecilie Ro/nne ◽  
Lars Thrane ◽  
Per-Olof Åstrand ◽  
Anders Wallqvist ◽  
Kurt V. Mikkelsen ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Temperature Dependence ◽  
Dielectric Relaxation ◽  
Liquid Water ◽  
Dynamics Simulation ◽  
Reflection Spectroscopy

scholarly journals Temperature Dependence of X-ray-Induced Auger Processes in Liquid Water

2020 ◽  
Vol 11 (7) ◽  
pp. 2497-2501
Author(s):  
Clara-Magdalena Saak ◽  
Isaak Unger ◽  
Geethanjali Gopakumar ◽  
Carl Caleman ◽  
Olle Björneholm
Keyword(s):  
Temperature Dependence ◽  
Liquid Water ◽  
X Ray

scholarly journals Temperature Dependence of the Primary Species Yields of Liquid Water Radiolysis by 0.8-MeV Fast Neutrons

2016 ◽  
Vol 42 (1) ◽  
pp. 13
Author(s):  
S.L. Butarbutar ◽  
G.R. Sunaryo ◽  
J. Meesungnoen ◽  
J.P. Jay-Gerin
Keyword(s):  
Temperature Dependence ◽  
Liquid Water ◽  
Fast Neutrons ◽  
Water Radiolysis

The pressure and temperature dependence of the complex permittivity of heptanol isomers

1981 ◽  
Vol 14 (4) ◽  
pp. 733-746 ◽  
Author(s):  
J K Vij ◽  
W G Scaife ◽  
J H Calderwood
Keyword(s):  
Temperature Dependence ◽  
Complex Permittivity

scholarly journals 2H NMR Studies on Water Dynamics in Functionalized Mesoporous Silica

2018 ◽  
Vol 232 (7-8) ◽  
pp. 1041-1058 ◽  
Author(s):  
Max Weigler ◽  
Martin Brodrecht ◽  
Hergen Breitzke ◽  
Felix Dietrich ◽  
Matthias Sattig ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Temperature Dependence ◽  
Liquid Water ◽  
Water Dynamics ◽  
Spin Lattice Relaxation ◽  
Nmr Studies ◽  
Solid Water ◽  
Water Species ◽  
Mcm 41 ◽  
Dynamic Crossover

AbstractMesoporous silica MCM-41 is prepared, for which the inner surfaces are modified by 3-(aminopropyl)triethoxysilane (APTES) in a controlled manner. Nitrogen gas adsorpition yields a pore diameter of 2.2 nm for the APTES functionalized MCM-41.2H nuclear magnetic resonance (NMR) and broadband dielectric spectroscopy (BDS) provide detailed and consistent insights into the temperature-dependent reorientation dynamics of water in this confinement. We find that a liquid water species becomes accompanied by a solid water species when cooling through ~210 K, as indicated by an onset of bimodal2H spin-lattice relaxation. The reorientation of the liquid water species is governed by pronounced dynamical heterogeneity in the whole temperature range. Its temperature dependence shows a mild dynamic crossover when the solid water species emerges and, hence, the volume accessible to the liquid water species further shrinks. Therefore, we attribute this variation in the temperature dependence to a change from bulk-like behavior towards interface-dominated dynamics. Below this dynamic crossover,2H line-shape and stimulted-echo studies show that water reorientation becomes anisotropic upon cooling, suggesting that these NMR approaches, but also BDS measurements do no longer probe the structural (α) relaxation, but rather a secondary (β) relaxation of water at sufficiently low temperatures. Then, another dynamic crossover at ~180 K can be rationalized in terms of a change of the temperature dependence of theβrelaxation in response to a glassy freezing of theαrelaxation of confined water. Comparing these results for APTES modied MCM-41 with previous findings for mesoporous silica with various pore diameters, we obtain valuable information about the dependence of water dynamics in restricted geometries on the size of the nanoscopic confinements and the properties of the inner surfaces.

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