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2017-12-01
10:15
[PUBDB-2017-12650] Journal Article
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Observation of Ultrathin Precursor Film Formation during Ge–Si Liquid-Phase Epitaxy from an Undersaturated Solution
ddc:670
Our in situ X-ray study shows that a silicon substrate in contact with an undersaturated In(Ge) solution is wetted by an approximately 1 nm thin germanium film, which does not grow any thicker. The results can be understood by the use of thickness-dependent correlated interfacial energies. [...]
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2017-12-01
10:08
[PUBDB-2017-12647] Journal Article
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Surface-Sensitive X-ray Diffraction Across the Pressure Gap
ddc:540
In this chapter surface-sensitive X-ray diffraction is introduced as an important crystallographic tool for the investigation of surfaces and nanostructures under high pressure reaction conditions and elevated temperatures which are relevant for industrial catalysis. After the introduction surface-sensitive X-ray diffraction methods are briefly explained and specialized instrumentation developed for the in situ investigation of surfaces and nanostructures across the pressure gap is presented combined with simultaneous measurement of the concentrations of reactants and products. [...]

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2017-12-01
09:50
[PUBDB-2017-12645] Journal Article
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Magnetic behaviour of multisegmented FeCoCu/Cu electrodeposited nanowires
ddc:530
Understanding the magnetic behaviour of multisegmented nanowires (NWs) is a major key for the application of such structures in future devices. In this work, magnetic/non-magnetic arrays of FeCoCu/Cu multilayered NWs electrodeposited in nanoporous alumina templates are studied. [...]
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2017-12-01
09:45
[PUBDB-2017-12644] Journal Article
; ; ; et al
Non-uniform nanosecond gate-delay of hybrid pixel detectors
ddc:540
A simple experiment to characterize the gating properties of X-ray area detectors using pulsed X-ray sources is presented. For a number of time-resolved experiments the gating uniformity of area detectors is important. [...]
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2017-12-01
09:37
[PUBDB-2017-12643] Journal Article
; ; ; et al
Model Catalytic Studies of Novel Liquid Organic Hydrogen Carriers: Indole, Indoline and Octahydroindole on Pt(111)
ddc:540
Indole derivatives were recently proposed as potential liquid organic hydrogen carriers (LOHC) for storage of renewable energies. In this work, we have investigated the adsorption, dehydrogenation and degradation mechanisms in the indole/indoline/octahydroindole system on Pt(111). [...]
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2017-12-01
09:30
OpenAccess [PUBDB-2017-12642] Journal Article
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High-energy x-ray diffraction from surfaces and nanoparticles
ddc:530
High-energy surface-sensitive x-ray diffraction (HESXRD) is a powerful high-energy photon technique (E>70 keV) that has in recent years proven to allow a fast data acquisition for the 3D structure determination of surfaces and nanoparticles under in situ and operando conditions. The use of a large-area detector facilitates thedirect collection of nearly distortion-free diffraction patterns over a wide q range, including crystal truncation rods perpendicular to the surface and large-area reciprocal space maps from epitaxial nanoparticles, which is not possible in the conventional low-photon energy approach (E=10−20 keV). [...]
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2017-11-10
10:06
OpenAccess [PUBDB-2017-11855] Conference Presentation
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N infusion study at DESY
International Workshop on Future Linear Colliders, LCWS2017, Meeting locationStrasbourg, France, 23 Oct 2017 - 27 Oct 20172017-10-232017-10-27  GO
The current status of the Nitrogen Infusion R&D at DESY is presented.Current results on cavity studies and material analyses on samples arediscussed. Consequences for the infusion procedures and the furnace usedare shown..
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2017-06-16
10:26
[PUBDB-2017-05209] Dissertation / PhD Thesis

Operando Characterization of Supported Alloy Nanoparticles during Catalytic CO Oxidation by Surface Sensitive X-Ray Diffraction
282 p. (2015) = University of Hamburg, Diss., 2015

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2017-06-16
10:21
[PUBDB-2017-05208] Bachelor Thesis

Sinterverhalten von Pt Nanopartikeln auf Al$_2$O$_3$(0001) unter CO Oxidationsbedingungen
48 p. (2016) = University of Hamburg, Bachelorarbeit, 2016

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2017-06-16
10:16
[PUBDB-2017-05206] Bachelor Thesis

Ultradünne Wasserschichten auf Strontium-Titanat
1-J (2016) = University of Hamburg, Bachelorarbeit, 2016

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