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2018-04-20
11:29
[PUBDB-2018-01798] Journal Article
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Electrochemical Tuning of Magnetism in Ordered Mesoporous Transition-Metal Ferrite Films for Micromagnetic Actuation

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2018-04-20
10:07
[PUBDB-2018-01797] Journal Article
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LAMBDA 2M GaAs—A multi-megapixel hard X-ray detector for synchrotrons
11th International Conference on Position Sensitive Detectors, PSD11, Meeting locationWalton Hall, Milton Keynes, UK, 3 Sep 2017 - 8 Sep 20172017-09-032017-09-08 Journal of Instrumentation 13(01), C01026 - C01026 (2018) [10.1088/1748-0221/13/01/C01026]  GO
Synchrotrons can provide very intense and focused X-ray beams, which can be used tostudy the structure of matter down to the atomic scale. In many experiments, the quality of theresults depends strongly on detector performance; in particular, experiments studying dynamics ofsamples require fast, sensitive X-ray detectors.“LAMBDA” is a photon-counting hybrid pixel detector system for experiments at synchrotrons,based on the Medipix3 readout chip. [...]
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2018-04-19
15:37
[PUBDB-2018-01794] Journal Article
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Effects of different Cu loadings on photocatalytic activity of $TiO_{2}-SiO_{2}$ prepared at low temperature oxidation of organic pollutants in water
The objective of this research is to examine how copper modification can improve the photocatalytic activity of TiO2-SiO2, and to explain the correlation between Cu concentration and chemical state of Cu cations in the TiO2-SiO2 matrix, and the photocatalytic activity under the UV/solar irradiation. The Cu-modified TiO2-SiO2 photocatalysts were prepared by a low temperature sol-gel method based on organic copper, silicon and titanium precursors with varied Cu concentrations (from 0.05 to 3 mol%). [...]
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ddc:540
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2018-04-18
18:06
[PUBDB-2018-01788] Journal Article
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Attosecond time–energy structure of X-ray free-electron laser pulses
The time–energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution via angular streaking of neon 1s photoelectrons. The X-ray pulses promote electrons from the neon core level into an ionization continuum, where they are dressed with the electric field of a circularly polarized infrared laser. [...]
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ddc:530
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2018-04-18
15:22
OpenAccess [PUBDB-2018-01787] Journal Article
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Multidimensional photoemission spectroscopy—the space-charge limit
Photoelectron spectroscopy, especially at pulsed sources, is ultimately limited by the Coulomb interaction in the electron cloud, changing energy and angular distribution of the photoelectrons. A detailed understanding of this phenomenon is crucial for future pump–probe photoemission studies at (x-ray) free electron lasers and high-harmonic photon sources. [...]
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ddc:530
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2018-04-11
15:06
[PUBDB-2018-01690] Journal Article
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Phase transitions of α-quartz at elevated temperatures under dynamic compression using a membrane-driven diamond anvil cell: Clues to impact cratering?
Abstract–Coesite and stishovite are high-pressure silica polymorphs known to have beenformed at several terrestrial impact structures. They have been used to assess pressure andtemperature conditions that deviate from equilibrium formation conditions. [...]
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ddc:520
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2018-04-10
15:18
[PUBDB-2018-01660] Contribution to a book

X-Ray Absorption Spectroscopy Measurements
Magmas Under Pressure: Advances in High-Pressure Experiments on Structure and Properties of Melts Amsterdam : Elsevier, 155-178 (2018) [10.1016/B978-0-12-811301-1.00006-X]  GO
An overview is given on the current state of X-ray absorption measurements on silicate melts and glasses. The challenges, limitations, and achievements of analyzing X-ray absorption spectra measured in liquids to determine structural properties of major and minor elements in magmas are described, with particular focus on describing non-Gaussian pair distribution functions in highly disordered glasses and melts, measured at in situ conditions. [...]

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2018-04-08
15:40
[PUBDB-2018-01647] Bachelor Thesis

Pressure Induced Rotational Symmetry Breaking in $URu_{2}Si_{2}$
50 pp. (2018) = Bachelorarbeit, University of Zurich, 2018

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2018-04-06
16:32
[PUBDB-2018-01643] Journal Article
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High-Performance n- and p-Type Field-Effect Transistors Based on Hybridly Surface-Passivated Colloidal PbS Nanosheets
Colloidally synthesized nanomaterials are among the promising candidates for future electronic devices due to their simplicity and the inexpensiveness of their production. Specifically, colloidal nanosheets are of great interest since they are conveniently producible through the colloidal approach while having the advantages of two‐dimensionality. [...]
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ddc:620
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2018-04-05
11:25
[PUBDB-2018-01622] Journal Article
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Time-Resolved Small-Angle X-ray Scattering Reveals Millisecond Transitions of a DNA Origami Switch
Nano letters 18(4), 2672 - 2676 (2018) [10.1021/acs.nanolett.8b00592]  GO
Self-assembled DNA structures enable creation of specific shapes at the nanometer–micrometer scale with molecular resolution. The construction of functional DNA assemblies will likely require dynamic structures that can undergo controllable conformational changes [...]
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ddc:540
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