scholarly journals Development of a reactor for the in situ monitoring of 2D materials growth on liquid metal catalysts, using synchrotron x-ray scattering, Raman spectroscopy, and optical microscopy

2020 ◽  
Vol 91 (1) ◽  
pp. 013907 ◽  
Author(s):  
Mehdi Saedi ◽  
J. M. de Voogd ◽  
A. Sjardin ◽  
A. Manikas ◽  
C. Galiotis ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Liquid Metal ◽  
Optical Microscopy ◽  
2D Materials ◽  
Metal Catalysts ◽  
In Situ Monitoring ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals The role of the ionic liquid C6C1ImTFSI in the sol–gel synthesis of silica studied using in situ SAXS and Raman spectroscopy

2015 ◽  
Vol 17 (15) ◽  
pp. 9841-9848 ◽  
Author(s):  
Moheb Nayeri ◽  
Kim Nygård ◽  
Maths Karlsson ◽  
Manuel Maréchal ◽  
Manfred Burghammer ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquid ◽  
Sol Gel ◽  
Chemical Changes ◽  
X Ray ◽  
X Ray Scattering ◽  
Sol Gel Synthesis ◽  
Ray Scattering

Structural and chemical changes during the sol–gel synthesis of silica using an ionic liquid are investigatedin situand simultaneously by X-ray scattering and μ-Raman spectroscopy.

On the stress sensitivity of the dehydration kinetics of gypsum: insights from fast in-situ synchrotron X-ray scattering  

2021 ◽  
Author(s):  
Christoph Schrank ◽  
Oliver Gaede ◽  
Tomasz Blach ◽  
Katherine Gioseffi ◽  
Stephen Mudie ◽  
...  
Keyword(s):  
In Situ Monitoring ◽  
Transformation Rate ◽  
Dehydration Kinetics ◽  
Differential Stress ◽  
X Ray ◽  
Dehydration Rate ◽  
X Ray Scattering ◽  
Kinetics Of ◽  
Ray Scattering

<p>The potential role of differential stress for mineral stability and the kinetics of mineral replacement reactions remains a matter of hot debate. We present a series of unique in-situ laboratory experiments on the dehydration of polycrystalline natural gypsum to hemihydrate, which were designed to test if the application of small differential stresses affects the mineral transformation rate. The dehydration experiments were conducted in a purpose-built loading cell suitable for in-situ monitoring with synchrotron transmission small- and wide-angle X-ray scattering (SAXS/WAXS). The time-resolved SAXS/WAXS data provide measurements of the transformation kinetics and the evolution of nano-pores of the dehydrating samples.</p><p>In our experiments, the kinetic effects of two principal variables were examined: dehydration temperature and axial confinement of the sample discs. In contrast to most previous dehydration experiments conducted in triaxial deformation apparatus, we applied different axial pre-stresses to the radially unconfined sample discs, which were well below the uniaxial compressive strength of the test material. This loading condition corresponds to constant-displacement rather than constant-stress boundary conditions. We find that in natural gypsum alabaster with randomly oriented grains an increase in axial pre-stress leads to a significant acceleration of the dehydration rate. Simple estimates of the energy budget suggest that the acceleration of the dehydration rate due to elastic straining is significantly cheaper energetically than due to heating. We hypothesise that the observed strong effect of differential stress on dehydration kinetics can be explained by geometry-energy interactions in the granular sample microstructure.</p>

scholarly journals In Situ Monitoring of Laser-Induced Periodic Surface Structures Formation on Polymer Films by Grazing Incidence Small-Angle X-ray Scattering

Langmuir ◽  
2015 ◽  
Vol 31 (13) ◽  
pp. 3973-3981 ◽  
Author(s):  
Esther Rebollar ◽  
Daniel R. Rueda ◽  
Ignacio Martín-Fabiani ◽  
Álvaro Rodríguez-Rodríguez ◽  
Mari-Cruz García-Gutiérrez ◽  
...  
Keyword(s):  
Polymer Films ◽  
Small Angle ◽  
Grazing Incidence ◽  
Surface Structures ◽  
In Situ Monitoring ◽  
Periodic Surface ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals In situ monitoring and analysis of enamel demineralisation using synchrotron X-ray scattering

2018 ◽  
Vol 77 ◽  
pp. 333-341 ◽  
Author(s):  
Tan Sui ◽  
Enrico Salvati ◽  
Robert A. Harper ◽  
Hongjia Zhang ◽  
Richard M. Shelton ◽  
...  
Keyword(s):  
In Situ Monitoring ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals In Situ Monitoring of Nanoparticle Formation during Iridium‐Catalysed Oxygen Evolution by Real‐Time Small Angle X‐Ray Scattering

ChemCatChem ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 5313-5321
Author(s):  
Maya Singer Hobbs ◽  
Emma V. Sackville ◽  
Andrew J. Smith ◽  
Karen J. Edler ◽  
Ulrich Hintermair
Keyword(s):  
Real Time ◽  
Oxygen Evolution ◽  
Small Angle ◽  
In Situ Monitoring ◽  
X Ray ◽  
Nanoparticle Formation ◽  
X Ray Scattering ◽  
Ray Scattering

In situ small angle x-ray scattering, wide angle x-ray scattering, and Raman spectroscopy of microwave synthesis

2006 ◽  
Vol 77 (12) ◽  
pp. 124101 ◽  
Author(s):  
G. A. Tompsett ◽  
B. Panzarella ◽  
W. C. Conner ◽  
K. S. Yngvesson ◽  
F. Lu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Small Angle ◽  
Microwave Synthesis ◽  
Wide Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

A Revised O2 Reduction Model in Li-O2 Batteries as Revealed by in Situ Small Angle X-Ray Scattering

2019 ◽  
Author(s):  
Christian Prehal ◽  
Aleksej Samojlov ◽  
Manfred Nachtnebel ◽  
Manfred Kriechbaum ◽  
Heinz Amenitsch ◽  
...  
Keyword(s):  
Small Angle ◽  
Wide Angle ◽  
Reduction Mechanism ◽  
Reduction Model ◽  
X Ray ◽  
X Ray Scattering ◽  
O2 Reduction ◽  
Ray Scattering

<b>Here we use in situ small and wide angle X-ray scattering to elucidate unexpected mechanistic insights of the O2 reduction mechanism in Li-O2 batteries.<br></b>

In situ Time-Resolved Small-Angle X-ray Scattering Reveals the Formation Kinetics of Polyelectrolyte Complex Micelles

2019 ◽  
Author(s):  
Hao Wu ◽  
Jeffrey Ting ◽  
Siqi Meng ◽  
Matthew Tirrell
Keyword(s):  
Small Angle ◽  
Self Assembly ◽  
Electrostatic Interactions ◽  
Polyelectrolyte Complex ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Kinetics Of ◽  
Ray Scattering

We have directly observed the <i>in situ</i> self-assembly kinetics of polyelectrolyte complex (PEC) micelles by synchrotron time-resolved small-angle X-ray scattering, equipped with a stopped-flow device that provides millisecond temporal resolution. This work has elucidated one general kinetic pathway for the process of PEC micelle formation, which provides useful physical insights for increasing our fundamental understanding of complexation and self-assembly dynamics driven by electrostatic interactions that occur on ultrafast timescales.

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