FS-CXS

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2019-04-17
13:27
Embargoed OpenAccess [PUBDB-2019-02010] Journal Article
et al
Monitoring Nanocrystal Self-Assembly in Real Time Using In Situ Small-Angle X-Ray Scattering
Small 15(20), 1900438 () [10.1002/smll.201900438]  GO
Self‐assembled nanocrystal superlattices have attracted large scientific attention due to their potential technological applications. However, the nucleation and growth mechanisms of superlattice assemblies remain largely unresolved due to experimental difficulties to monitor intermediate states. [...]
Published on 2019-04-16. Available in OpenAccess from 2020-04-16.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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2019-04-09
10:50
OpenAccess [PUBDB-2019-01910] Preprint/Report
et al
Scientific Opportunities with an X-ray Free-Electron Laser Oscillator
[arXiv:1903.09317]
 GO
An X-ray free-electron laser oscillator (XFELO) is a new type of hard X-ray source that would produce fully coherent pulses with meV bandwidth and stable intensity. The XFELO complements existing sources based on self-amplified spontaneous emission (SASE) from high-gain X-ray free-electron lasers (XFEL) that produce ultra-short pulses with broad-band chaotic spectra [...]
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2019-03-22
14:32
OpenAccess [PUBDB-2019-01681] Journal Article
et al
Spatial and temporal pre-alignment of an X-ray split-and-delay unit by laser light interferometry
We present a novel experimental setup for performing a precise pre-alignment of a hard X-ray split-and-delay unit based on low coherence light interferometry and high-precision penta-prisms. A split-and-delay unit is a sophisticated perfect crystal-optics device that splits an incoming X-ray pulse into two sub-pulses and generates a controlled time-delay between them. [...]
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2019-03-18
17:59
Embargoed OpenAccess [PUBDB-2019-01592] Journal Article
et al
In situ small-angle X-ray scattering environment for studying nanocrystal self-assembly upon controlled solvent evaporation
We present a sample environment for the investigation of nanoparticle self-assembly from a colloidal solution via controlled solvent evaporation using in situ small-angle X-ray scattering. Nanoparticles form ordered superlattices in the evaporative assembly along the X-ray transparent windows of a three-dimensional sample cell. [...]
Published on 2019-03-18. Available in OpenAccess from 2020-03-18.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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2019-01-04
11:07
OpenAccess [PUBDB-2019-00039] Dissertation / PhD Thesis

Structure and dynamics of glass-forming fluids
134 pp. () [10.3204/PUBDB-2019-00039] = Dissertation, University of Hamburg, 2018  GO
Colloidal dispersions are ubiquitous in our daily life and find numerous applications in industry and science. They are in particular used as a model system to study phase transitions in soft matter systems. [...]
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2018-10-19
09:17
OpenAccess [PUBDB-2018-03848] Book/Report/Dissertation / PhD Thesis

Structure of complex fluids under shear flows
[DESY-THESIS-2018-028]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY THESIS 137 pp. () [10.3204/PUBDB-2018-03848] = Dissertation, Universität Hamburg, 2018  GO
With the recent developments of modern synchrotron and X-ray Free Electron Laser (XFEL) light sources high speed and micrometer sized liquid jets have become one of the most important sample delivery systems. For that reason it is highly important to develop liquid jet devices compatible with micrometer X-ray beams, which are optimized for the investigation of nanostructures and the behavior of complex liquids behavior under flow.This thesis reports a detailed X-ray scattering study of a liquid jet produced by a gas dynamic virtual nozzle (GDVN) system. [...]
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2018-10-17
10:44
[PUBDB-2018-03818] Poster
et al
Ultrafast Demagnetization by Extreme Ultraviolet Light
German Conference for Research with Synchrotron Radiation, Neutrons and Ion Beams at Large Facilities, SNI, MünchenMünchen, Germany, 17 Sep 2018 - 19 Sep 20182018-09-172018-09-19
Free-electron lasers (FELs) enable the study of dynamics in matter on combined femtosecond time and nanometer length scales [1]. One of the most intriguing topics within contemporary research on magnetism, ultrafast near-infrared (IR) laser-induced demagnetization [2,3], has greatly benefited from the advent of FELs [4] as it was shown that optically generated superdiffusive spin currents [5] contribute to that phenomenon [6]. [...]

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2018-09-26
13:15
OpenAccess [PUBDB-2018-03613] Journal Article
et al
Dynamics of soft nanoparticle suspensions at hard X-ray FEL sources below the radiation damage threshold
IUCrJ 5(6), 801 - 807 () [10.1107/S2052252518013696]  GO
The application of X-ray photon correlation spectroscopy (XPCS) at free-electron laser (FEL) facilities enables, for the first time, the study of dynamics on a (sub-)nanometre scale in an unreached time range between femtoseconds and seconds. For soft-matter materials, radiation damage is a major limitation when going beyond single-shot applications [...]
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2018-09-07
15:47
Embargoed OpenAccess [PUBDB-2018-03414] Journal Article
et al
X-ray spectroscopy with variable line spacing based on reflection zone plate optics
Optics letters 43(18), 4390 - 4393 () [10.1364/OL.43.004390]  GO
X-ray spectroscopy is a method, ideally suited for investigating the electronic structure of matter, which has been enabled by the rapid developments in light sources and instruments. The x-ray fluorescence lines of life-relevant elements such as carbon, nitrogen, and oxygen are located in the soft x-ray regime and call for suitable spectrometer devices. [...]
Published on 2018-09-10. Available in OpenAccess from 2019-09-10.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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2018-08-04
07:01
Embargoed OpenAccess [PUBDB-2018-02744] Journal Article
et al
Pressure-Stimulated Supercrystals Formation in Nanoparticle Suspensions
Nanoparticles can self-organize into “supercrystals” with many potential applications. Different paths can lead to nanoparticle self-organization into such periodic arrangements. [...]
Published on 2018-08-02. Available in OpenAccess from 2019-08-02.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA); External link: Download fulltextFulltext
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