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2018-02-15
09:33
[PUBDB-2018-01190] Conference Presentation
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New Perspectives in Multi-Component Hydrides
European Materials Research Society Fall Meeting Symposium O: Functional Hydride Materials, Meeting locationWarsaw, Poland, 19 Sep 2016 - 23 Sep 20162016-09-192016-09-23
Hydrogen technology can be incorporated into intermittent renewable energy systems to realise a complete clean, green energy harvesting and storage cycle. An efficient hydrogen storage system based on solid state hydrogen requires optimised material properties for each particular application. [...]

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2018-02-12
10:33
[PUBDB-2018-01151] Journal Article
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Creep deformation of Co-Re-Ta-C alloys with varying C content – investigated in-situ by simultaneous synchrotron radiation diffraction
ddc:600
The creep deformation of precipitation hardened Co-Re-Ta-C alloys is investigated during in-situ synchrotron diffraction experiment at 1373 K. At room temperature, the alloys have a structure consisting of ϵϵ-Co (hcp) and metastably retained γγ-Co (fcc) and are strengthened by precipitates of the mono-carbide of Ta, which are finely dispersed in the alloy matrix. [...]

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2018-02-10
11:20
[PUBDB-2018-01146] Report/Journal Article
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An in situ investigation of the deformation mechanisms in a β-quenched Ti-5Al-5V-5Mo-3Cr alloy
[I-20150533 EC] ddc:600
The sequence of activation of deformation mechanisms in a near-β Ti-5Al-5Mo-5V-3Cr alloy quenched from the β-field is investigated as a function of strain during uniaxial compression at 0.001 s$^{−1}$ up to $ε$ = 0.041. Bulk in situ high energy synchrotron X-ray diffraction is applied to follow continuously the evolution of the microstructure of the alloy during deformation and is complemented with metallographic analysis. [...]
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2018-02-08
11:23
[PUBDB-2018-01134] Contribution to a conference proceedings/Contribution to a book
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Layout and first results of the nanotomography endstation at the P05 beamline at PETRA III
: [Proceedings] - , 2016. - ISBN - doi:10.1063/1.4937502
XRM 2014: Proceedings of the 12th International Conference on X-Ray Microscopy, Meeting locationMelburn, Australia, 26 Oct 2014 - 31 Oct 20142014-10-262014-10-31
020008 pp. (2016) [10.1063/1.4937502]  GO

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2018-02-08
11:10
OpenAccess [PUBDB-2018-01133] Journal Article/Contribution to a conference proceedings
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X-ray Full Field Microscopy at 30 keV
22nd International Congress on X-Ray Optics and Microanalysis, Meeting locationHamburg, Germany, 2 Sep 2016 - 6 Sep 20162016-09-022016-09-06 Journal of physics / Conference Series 499, 012007 (2014) [10.1088/1742-6596/499/1/012007]  GO
ddc:530
In our X-ray full field microscopy experiments, we demonstrated a resolution better than 260 nm over the entire field of view of 80 μm x 80 μm at 30 keV. Our experimental setup at PETRA III, P05, had a length of about 5 m consisting of an illumination optics, an imaging lens and a detector [...]
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2018-02-08
11:04
[PUBDB-2018-01131] Journal Article
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Strain-dependent fractional molecular diffusion in humid spider silk fibres
Interface 13(122), 20160506 - (2016) [10.1098/rsif.2016.0506]  GO
ddc:500
Spider silk is a material well known for its outstanding mechanical properties, combining elasticity and tensile strength. The molecular mobility within the silk's polymer structure on the nanometre length scale importantly contributes to these macroscopic properties. [...]
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2018-02-08
10:52
[PUBDB-2018-01129] Contribution to a conference proceedings/Contribution to a book
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High-resolution grating interferometer for phase-contrast imaging at PETRA III
Proceedings of Developments in X-Ray Tomography XI
Developments in X-Ray Tomography XI, Meeting locationSan Diego, United States, 6 Aug 2017 - 10 Aug 20172017-08-062017-08-10
SPIE, 1039108-1-1039108-10 (2017) [10.1117/12.2273892]  GO
Phase-contrast imaging has proven to be a valuable tool when investigating weak absorbing materials like soft tissue, due to its increased contrast compared to conventional absorption-contrast imaging. While propagation-based phase-contrast is an ideal tool to achieve highest resolution at a good contrast for almost not-absorbing material, it quickly comes to its limitations on applications demanding for a high dynamic range in contrast. [...]

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2018-02-08
10:48
[PUBDB-2018-01128] Journal Article
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Single and double grating-based X-ray microtomography using synchrotron radiation
ddc:530
Hard X-ray phase contrast imaging techniques have become most suitable for the non-destructive three-dimensional visualization of soft tissues at the microscopic level. Among the hard X-ray grating interferometry methods, a single-grating approach (XSGI) has been implemented by simplifying the established double-grating interferometer (XDGI). [...]
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2018-02-08
10:43
OpenAccess [PUBDB-2018-01126] Journal Article
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Analytical registration of vertical image drifts in parallel beam tomographic data
Optics letters 42(23), 4982-4985 (2017) [10.1364/OL.42.004982]  GO
ddc:530
Reconstructing tomographic images of high resolution, as in x-ray microscopy or transmission electron microscopy, is often limited by the stability of the stages or sample drifts, which requires an image alignment prior to reconstruction. Feature-based image registration is routinely used to align images, but this technique relies on strong features in the sample or the application of gold tracer particles, for example. [...]
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2018-02-08
09:42
DBCoverage [PUBDB-2018-01124] Journal Article
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Nanotomography endstation at the P05 beamline: Status and perspectives
ddc:530
The Imaging Beamline IBL/P05 at the DESY storage ring PETRA III, operated by the Helmholtz-Zentrum Geesthacht, has two dedicated endstations optimized for micro- and nanotomography experiments [1-3]. Here we present the status of the nanotomography endstation, highlight the latest instrumentation upgrades and present first experimental results. [...]
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