scholarly journals Anisotropic dynamics and kinetic arrest of dense colloidal ellipsoids in the presence of an external field studied by differential dynamic microscopy

2020 ◽  
Vol 6 (3) ◽  
pp. eaaw9733 ◽  
Author(s):  
Antara Pal ◽  
Vincent A. Martinez ◽  
Thiago H. Ito ◽  
Jochen Arlt ◽  
Jérôme J. Crassous ◽  
...  
Keyword(s):  
Diffusion Coefficients ◽  
Experimental Information ◽  
Zero Shear Viscosity ◽  
X Ray ◽  
Rheological Measurements ◽  
X Ray Scattering ◽  
Recent Developments ◽  
Long Time ◽  
Kinetic Arrest ◽  
System Approaches

Anisotropic dynamics on the colloidal length scale is ubiquitous in nature. Of particular interest is the dynamics of systems approaching a kinetically arrested state. The failure of classical techniques for investigating the dynamics of highly turbid suspensions has contributed toward the limited experimental information available up until now. Exploiting the recent developments in the technique of differential dynamic microscopy (DDM), we report the first experimental study of the anisotropic collective dynamics of colloidal ellipsoids with a magnetic hematite core over a wide concentration range approaching kinetic arrest. In addition, we have investigated the effect of an external magnetic field on the resulting anisotropic collective diffusion. We combine DDM with small-angle x-ray scattering and rheological measurements to locate the glass transition and to relate the collective short- and long-time diffusion coefficients to the structural correlations and the evolution of the zero shear viscosity as the system approaches an arrested state.

Comparison of the Effective Radius of Sterically Stabilized Latex Particles Determined by Small-Angle X-ray Scattering and by Zero Shear Viscosity

Langmuir ◽  
1998 ◽  
Vol 14 (18) ◽  
pp. 5083-5087 ◽  
Author(s):  
A. Weiss ◽  
N. Dingenouts ◽  
M. Ballauff ◽  
H. Senff ◽  
W. Richtering
Keyword(s):  
Shear Viscosity ◽  
Small Angle ◽  
Effective Radius ◽  
Zero Shear Viscosity ◽  
Latex Particles ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Recent developments in small-angle X-ray scattering and hybrid method approaches for biomacromolecular solutions

2018 ◽  
Vol 2 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Martin A. Schroer ◽  
Dmitri I. Svergun
Keyword(s):  
Small Angle ◽  
Scattering Data ◽  
Quality Data ◽  
Biological Macromolecules ◽  
Ambient Conditions ◽  
X Ray ◽  
X Ray Scattering ◽  
Analysis Methods ◽  
Recent Developments ◽  
Ray Scattering

Small-angle X-ray scattering (SAXS) has become a streamline method to characterize biological macromolecules, from small peptides to supramolecular complexes, in near-native solutions. Modern SAXS requires limited amounts of purified material, without the need for labelling, crystallization, or freezing. Dedicated beamlines at modern synchrotron sources yield high-quality data within or below several milliseconds of exposure time and are highly automated, allowing for rapid structural screening under different solutions and ambient conditions but also for time-resolved studies of biological processes. The advanced data analysis methods allow one to meaningfully interpret the scattering data from monodisperse systems, from transient complexes as well as flexible and heterogeneous systems in terms of structural models. Especially powerful are hybrid approaches utilizing SAXS with high-resolution structural techniques, but also with biochemical, biophysical, and computational methods. Here, we review the recent developments in the experimental SAXS practice and in analysis methods with a specific focus on the joint use of SAXS with complementary methods.

Recent developments in tomographic small-angle X-ray scattering

2009 ◽  
Vol 206 (8) ◽  
pp. 1723-1726 ◽  
Author(s):  
J. M. Feldkamp ◽  
M. Kuhlmann ◽  
S. V. Roth ◽  
A. Timmann ◽  
R. Gehrke ◽  
...  
Keyword(s):  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Recent Developments ◽  
Ray Scattering

scholarly journals Recent Developments at the Beamline for Biological Small Angle x-ray Scattering BL4-2 at SSRL

2020 ◽  
Vol 118 (3) ◽  
pp. 138a
Author(s):  
Ivan Rajkovic ◽  
Tsutomu Matsui ◽  
Ping Liu ◽  
Thomas M. Weiss
Keyword(s):  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Recent Developments ◽  
Ray Scattering

In Situ X-Ray Techniques for Electrochemical Interfaces

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Bruna F. Baggio ◽  
Yvonne Grunder
Keyword(s):  
Annual Review ◽  
Publication Date ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Recent Developments ◽  
In Operando ◽  
Electrochemical Interfaces ◽  
Ray Scattering

This article reviews progress in the study of materials using X-ray-based techniques from an electrochemistry perspective. We focus on in situ/in operando surface X-ray scattering, X-ray absorption spectroscopy, and the combination of both methods. The background of these techniques together with key concepts is introduced. Key examples of in situ and in operando investigation of liquid–solid and liquid–liquid interfaces are presented. X-ray scattering and spectroscopy have helped to develop an understanding of the underlying atomic and molecular processes associated with electrocatalysis, electrodeposition, and battery materials. We highlight recent developments, including resonant surface diffraction and time-resolved studies. Expected final online publication date for the Annual Review of Analytical Chemistry, Volume 14 is June 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Recent developments in polymer applications of synchrotron small-angle X-ray scattering

2016 ◽  
Vol 66 (2) ◽  
pp. 237-249 ◽  
Author(s):  
Shinichi Sakurai
Keyword(s):  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Recent Developments ◽  
Ray Scattering

scholarly journals Recent Developments of Inelastic X-ray Scattering Spectroscopy.

1998 ◽  
Vol 40 (2) ◽  
pp. 177-184
Author(s):  
Hisashi HAYASHI
Keyword(s):  
X Ray ◽  
X Ray Scattering ◽  
Recent Developments ◽  
Ray Scattering
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