scholarly journals Growth of SiC bulk crystals for application in power electronic devices - process design, 2D and 3D X-ray in situ visualization and advanced doping

2014 ◽  
Vol 50 (1) ◽  
pp. 2-9 ◽  
Author(s):  
Peter Wellmann ◽  
Georg Neubauer ◽  
Lars Fahlbusch ◽  
Michael Salamon ◽  
Norman Uhlmann
Keyword(s):  
Process Design ◽  
Electronic Devices ◽  
Power Electronic ◽  
Bulk Crystals ◽  
X Ray ◽  
In Situ Visualization ◽  
2D And 3D

In-situ visualization of N2 evolution in operating direct hydrazine hydrate fuel cell by soft X-ray radiography

2014 ◽  
Vol 252 ◽  
pp. 35-42 ◽  
Author(s):  
Tomokazu Sakamoto ◽  
Phengxay Deevanhxay ◽  
Koichiro Asazawa ◽  
Shohji Tsushima ◽  
Shuichiro Hirai ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Hydrazine Hydrate ◽  
X Ray ◽  
In Situ Visualization

In situ visualization by X-Ray computed tomography on sulfur stabilization and lithium polysulfides immobilization in S@HCS/MnO cathode

2020 ◽  
Vol 31 ◽  
pp. 164-171
Author(s):  
Ruoyu Xu ◽  
Jingwei Xiang ◽  
Junrun Feng ◽  
Xuekun Lu ◽  
Zhangxiang Hao ◽  
...  
Keyword(s):  
Computed Tomography ◽  
X Ray ◽  
In Situ Visualization ◽  
X Ray Computed

Versatile variable temperature insert at the DEIMOS beamline forin situelectrical transport measurements

2016 ◽  
Vol 23 (3) ◽  
pp. 652-657 ◽  
Author(s):  
L. Joly ◽  
B. Muller ◽  
E. Sternitzky ◽  
J.-G. Faullumel ◽  
A. Boulard ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Electrical Transport ◽  
Tunnel Junctions ◽  
Variable Temperature ◽  
Electronic Devices ◽  
X Ray ◽  
In Operando ◽  
X Ray Absorption ◽  
Multifunctional Properties

The design and the first experiments are described of a versatile cryogenic insert used for its electrical transport capabilities. The insert is designed for the cryomagnet installed on the DEIMOS beamline at the SOLEIL synchrotron dedicated to magnetic characterizations through X-ray absorption spectroscopy (XAS) measurements. This development was spurred by the multifunctional properties of novel materials such as multiferroics, in which, for example, the magnetic and electrical orders are intertwined and may be probed using XAS. The insert thus enables XAS toin situprobe this interplay. The implementation of redundant wiring and careful shielding also enables studies on operating electronic devices. Measurements on magnetic tunnel junctions illustrate the potential of the equipment toward XAS studies ofin operandoelectronic devices.

In-situ visualization of liquid water in an operating PEMFC by soft X-ray radiography

2010 ◽  
Vol 35 (20) ◽  
pp. 11119-11128 ◽  
Author(s):  
Takashi Sasabe ◽  
Shohji Tsushima ◽  
Shuichiro Hirai
Keyword(s):  
Liquid Water ◽  
X Ray ◽  
In Situ Visualization

In situ search for life traces in extraterrestrial samples by synchrotron x-ray fluorescence 2D and 3D imaging

2007 ◽  
Author(s):  
Laurence Lemelle ◽  
Alexandre Simionovici ◽  
Murielle Salomé ◽  
Pierre Bleuet ◽  
Jean Susini ◽  
...  
Keyword(s):  
3D Imaging ◽  
X Ray ◽  
2D And 3D

scholarly journals Carbon speciation in organic fossils using 2D to 3D x-ray Raman multispectral imaging

2019 ◽  
Vol 5 (8) ◽  
pp. eaaw5019 ◽  
Author(s):  
Rafaella Georgiou ◽  
Pierre Gueriau ◽  
Christoph J. Sahle ◽  
Sylvain Bernard ◽  
Alessandro Mirone ◽  
...  
Keyword(s):  
Chemical Speciation ◽  
Multispectral Imaging ◽  
Unsolved Problem ◽  
3D Images ◽  
X Ray ◽  
Plant Fossil ◽  
Homogeneous Chemical ◽  
2D And 3D ◽  
2D To 3D

The in situ two-dimensional (2D) and 3D imaging of the chemical speciation of organic fossils is an unsolved problem in paleontology and cultural heritage. Here, we use x-ray Raman scattering (XRS)–based imaging at the carbon K-edge to form 2D and 3D images of the carbon chemistry in two exceptionally preserved specimens, a fossil plant dating back from the Carboniferous and an ancient insect entrapped in 53-million-year-old amber. The 2D XRS imaging of the plant fossil reveals a homogeneous chemical composition with micrometric “pockets” of preservation, likely inherited from its geological history. The 3D XRS imaging of the insect cuticle displays an exceptionally well preserved remaining chemical signature typical of polysaccharides such as chitin around a largely hollowed-out inclusion. Our results open up new perspectives for in situ chemical speciation imaging of fossilized organic materials, with the potential to enhance our understanding of organic specimens and their paleobiology.

scholarly journals The Influence of Alloy Composition and Liquid Phase on Foaming of Al–Si–Mg Alloys

Metals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 189 ◽  
Author(s):  
Francisco García-Moreno ◽  
Laurenz Alexander Radtke ◽  
Tillmann Robert Neu ◽  
Paul Hans Kamm ◽  
Manuela Klaus ◽  
...  
Keyword(s):  
3D Imaging ◽  
Alloy Composition ◽  
Liquid Fraction ◽  
X Ray ◽  
Solid Foams ◽  
Si Content ◽  
2D And 3D ◽  
Mg Content ◽  
In Situ Diffraction

The foaming behaviour of aluminium alloys processed by the powder compaction technique depends crucially on the exact alloy composition. The AlSi8Mg4 alloy has been in use for a decade now, and it has been claimed that this composition lies in an “island of good foaming”. We investigated the reasons for this by systematically studying alloys around this composition by varying the Mg and Si content by a few percent. We applied in situ X-ray 2D and 3D imaging experiments combined with a quantitative nucleation number and expansion analysis, X-ray tomography of solid foams to assess the pore structure and pore size distribution, and in situ diffraction experiments to quantify the melt fraction at any moment. We found a correlation between melt fraction and expansion height and verified that the “island of good foaming” actually exists, and foams outside a preferred range for the liquid fraction—just above TS and between 40–60%—show a poorer expansion performance than the reference alloy AlSi8Mg4. A very slight increase of Si and decrease of Mg content might further improve this foam.

scholarly journals In-situ Visualization of Fluid Flow in Fault-related Rock by X-ray CT.

2001 ◽  
Vol 42 (5) ◽  
pp. 294-299 ◽  
Author(s):  
Tetsuro HIRONO ◽  
Manabu TAKAHASHI ◽  
Satoru NAKASHIMA ◽  
Ken IKEHARA
Keyword(s):  
Fluid Flow ◽  
X Ray ◽  
In Situ Visualization
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