Why the Brillouin Light Scattering Relaxation Times of Molten Zinc Chloride Are Shorter and Weaker in Temperature Dependence than the Structural Relaxation Times from Depolarized Light and Neutron Spin Echo Spectroscopy

2021 ◽  
Vol 125 (13) ◽  
pp. 2759-2763
Author(s):  
K. L. Ngai
Keyword(s):  
Light Scattering ◽  
Temperature Dependence ◽  
Zinc Chloride ◽  
Structural Relaxation ◽  
Spin Echo ◽  
Relaxation Times ◽  
Neutron Spin ◽  
Brillouin Light Scattering ◽  
Molten Zinc ◽  
Neutron Spin Echo

Study on the temperature-dependent coupling among viscosity, conductivity and structural relaxation of ionic liquids

2015 ◽  
Vol 17 (29) ◽  
pp. 19126-19133 ◽  
Author(s):  
Tsuyoshi Yamaguchi ◽  
Takuya Yonezawa ◽  
Shinobu Koda
Keyword(s):  
Ionic Liquids ◽  
Structural Relaxation ◽  
Spin Echo ◽  
Neutron Spin ◽  
Temperature Dependent ◽  
Frequency Dependent ◽  
Neutron Spin Echo ◽  
Dependent Viscosity

The frequency-dependent viscosity and conductivity of three imidazolium-based ionic liquids were measured at several temperatures in the MHz region, and the results are compared with the intermediate scattering functions determined by neutron spin echo spectroscopy.

In Situ Dynamic Light Scattering Complementing Neutron Spin Echo Measurements on Protein Samples

2020 ◽  
Vol 14 (S1) ◽  
pp. S185-S189
Author(s):  
L. Balacescu ◽  
F. Vögl ◽  
S. Staringer ◽  
V. Ossovyi ◽  
G. Brandl ◽  
...  
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Spin Echo ◽  
Neutron Spin ◽  
Neutron Spin Echo

Static and Dynamic Perturbations of Droplet Microemulsion by Confinement and Adsorption of Polymer

1994 ◽  
Vol 366 ◽  
Author(s):  
Jyotsana Lal ◽  
Bela Farago ◽  
Loic Auvray
Keyword(s):  
Spin Echo ◽  
Relaxation Times ◽  
Polymer Chains ◽  
Neutron Spin ◽  
Elastic Coefficient ◽  
Characteristic Peak ◽  
Neutron Spin Echo ◽  
Structure And Dynamics ◽  
Structure Changes ◽  
First Case

ABSTRACTThe effects induced on the structure and dynamics of dilute microemulsion droplets by the confinement of polymer chains inside the droplets and by the adsorption of polymer on the surfactant shells from the outer continous phase were studied. The local structure changes were observed by small angle neutron scattering (SANS). The curvature fluctuations and the size distribution of the droplets increase for both chains inside and outside by different possible mechanisms, an induced size polydispersity minimizing osmotic stresses in the first case, a lowering of the film rigidity in the second one. Neutron spin echo techniques (NSE) were also used to probe the shape fluctuations of the same droplets with and without polymer. A sharp characteristic peak due to the contribution of the 1=2 mode is exhibited by the spectrum of relaxation times as a function of wavevector q. The height of this peak is decreased with the addition of polymer. i.e. the fluctuation of the 1=2 modes are dampened with the addition of polymer. The effect on the elastic coefficient K of the surfactant layer will be discussed below.

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