scholarly journals A small-angle scattering environment for in situ ultrasound studies

Soft Matter ◽  
2018 ◽  
Vol 14 (25) ◽  
pp. 5283-5293 ◽  
Author(s):  
David S. Li ◽  
Yi-Ting Lee ◽  
Yuyin Xi ◽  
Ivan Pelivanov ◽  
Matthew O’Donnell ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Ultrasound Studies ◽  
X Ray ◽  
Angle Scattering ◽  
Scattering Measurements ◽  
Sample Environment

We designed and tested a calibrated ultrasound sample environment for in situ small-angle X-ray and neutron scattering measurements.

Dimensions de micelles mixtes de p-alkylbenzènesulfonates par diffusion central des rayons X

1977 ◽  
Vol 10 (1) ◽  
pp. 37-44 ◽  
Author(s):  
C. Cabos ◽  
P. Delord ◽  
J. Rouviere
Keyword(s):  
Small Angle ◽  
Small Angle Scattering ◽  
Micellar Solutions ◽  
Probable Structure ◽  
X Ray ◽  
Absolute Scale ◽  
Angle Scattering ◽  
Scattering Measurements ◽  
Two Component ◽  
Most Probable Structure

The structure of micellar solutions is determined from X-ray small-angle scattering measurements on an absolute scale. The most probable structure is chosen by comparison with spherical cylindrical and lamellar models. This method is applied to two-component micelles and it is possible to follow the variation of micellar dimensions when the concentration of each component is varying.

In-situ X-Ray Small Angle Scattering during the Crystallization of Amorphous Mg76Zn24

1986 ◽  
Vol 41 (9) ◽  
pp. 1123-1128 ◽  
Author(s):  
M. Schaal ◽  
P. Lamparter ◽  
S. Steeb
Keyword(s):  
Phase Diagram ◽  
Amorphous Phase ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Crystalline Phases ◽  
X Ray ◽  
Β Phase ◽  
Angle Scattering

By X-Ray small angle scattering the relaxation and crystallization of amorphous Mg76Zn24 was investigated in-situ. Radii of gyration of the different phases developing during the annealing of the sample were determined. By comparison of the small angle scattering results with DSC-results from the literature and the phase diagram the different phases could be identified. The crystallization of amorphous Mg76Zn24 is preceded by the formation of β-phase (Mg72Zn28)-like inhomogeneities in the amorphous phase. Further annealing leads to the final crystalline phases γ-MgZn and Mg.

Theory, practice and prospects of X-ray and neutron scattering for lignocellulosic biomass characterization: towards understanding biomass pretreatment

2015 ◽  
Vol 8 (2) ◽  
pp. 436-455 ◽  
Author(s):  
Gang Cheng ◽  
Xin Zhang ◽  
Blake Simmons ◽  
Seema Singh
Keyword(s):  
Neutron Scattering ◽  
Detailed Analysis ◽  
Lignocellulosic Biomass ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Biomass Pretreatment ◽  
Biomass Recalcitrance ◽  
X Ray ◽  
Angle Scattering ◽  
Biomass Characterization

We present a detailed analysis of application of wide and small angle scattering techniques to study the structures of cellulose and lignin which are relevant to biomass recalcitrance.

scholarly journals In situ small-angle X-ray and neutron scattering measurements on a blend of deuterated and hydrogenated polyethylenes during uniaxial drawing

2012 ◽  
Vol 45 (3) ◽  
pp. 293-299 ◽  
Author(s):  
Go Matsuba ◽  
Chie Ito ◽  
Yunfeng Zhao ◽  
Rintaro Inoue ◽  
Koji Nishida ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
X Ray ◽  
Scattering Measurements

X-ray transparent proton-exchange membrane fuel cell design for in situ wide and small angle scattering tomography

2019 ◽  
Vol 437 ◽  
pp. 226906 ◽  
Author(s):  
Isaac Martens ◽  
Antonis Vamvakeros ◽  
Raphael Chattot ◽  
Maria V. Blanco ◽  
Miika Rasola ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Small Angle ◽  
Proton Exchange Membrane ◽  
Small Angle Scattering ◽  
Proton Exchange ◽  
Cell Design ◽  
X Ray ◽  
Angle Scattering ◽  
Exchange Membrane

Quantized Diameters in Self-assembled Cyundrical Aggregates of Chlorophylls

1989 ◽  
Vol 174 ◽  
Author(s):  
D. L. Worcester ◽  
T. J. Michalski ◽  
M. K. Bowman ◽  
J. J. Katz
Keyword(s):  
Neutron Scattering ◽  
Chlorophyll A ◽  
Strong Evidence ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Bacteriochlorophyll A ◽  
Angle Scattering ◽  
Scattering Measurements ◽  
Hollow Cylinders ◽  
Neutron Small Angle Scattering

AbstractNeutron small-angle scattering measurements of several different chlorophylls hydrated in deuterated octane-toluene mixtures show that long, hollow cylinders of aggregated chlorophyll are formed. Clear secondary maxima are present in the scattering, and the cylinder diameters are well determined, but depend on the type of chlorophyll. Chlorophyll-a and Bacteriochlorophyll-a were particularly studied, and several samples of each have been measured. Other chlorophylls have also been studied. The results provide strong evidence that chlorophyll cylinders are only certain sizes, with diameters very nearly in the ratio of small integers. Thus, the cylinder diameters appear to be quantized. Neutron scattering results that further test this quantization property are presented here, together with a proposal for the stereochemical features of chlorophyll aggregation which account for the diameter quantization.

Quantification of the information in small-angle scattering data

2014 ◽  
Vol 47 (6) ◽  
pp. 2000-2010 ◽  
Author(s):  
Martin Cramer Pedersen ◽  
Steen Laugesen Hansen ◽  
Bo Markussen ◽  
Lise Arleth ◽  
Kell Mortensen
Keyword(s):  
Data Analysis ◽  
Neutron Scattering ◽  
Ray Tracing ◽  
Information Content ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Scattering Data ◽  
X Ray ◽  
Angle Scattering ◽  
Wide Range

Small-angle X-ray and neutron scattering have become increasingly popular owing to improvements in instrumentation and developments in data analysis, sample handling and sample preparation. For some time, it has been suggested that a more systematic approach to the quantification of the information content in small-angle scattering data would allow for a more optimal experiment planning and a more reliable data analysis. In the present article, it is shown how ray-tracing techniques in combination with a statistically rigorous data analysis provide an appropriate platform for such a systematic quantification of the information content in scattering data. As examples of applications, it is shown how the exposure time at different instrumental settings or contrast situations can be optimally prioritized in an experiment. Also, the gain in information by combining small-angle X-ray and neutron scattering is assessed. While solution small-angle scattering data of proteins and protein–lipid complexes are used as examples in the present case study, the approach is generalizable to a wide range of other samples and experimental techniques. The source code for the algorithms and ray-tracing components developed for this study has been made available on-line.

Small-angle scattering studies of the pore structure of polymer-modified portland cement pastes

1990 ◽  
Vol 5 (6) ◽  
pp. 1281-1284 ◽  
Author(s):  
V. M. Castaño ◽  
P. W. Schmidt ◽  
H. G. Hörnis
Keyword(s):  
Portland Cement ◽  
Neutron Scattering ◽  
Pore Structure ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Cement Pastes ◽  
X Ray ◽  
Angle Scattering ◽  
Gel Porosity

Small-angle x-ray and neutron scattering experiments were performed in several polymer-containing portland cement pastes with the same w/c ratio. The nature of the results is discussed in terms of the role of the polymer upon the properties of the materials. A comparison with other works seems to indicate that the capillary pores are strongly affected whereas the gel porosity remains unchanged by the polymer solutions.

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