FS-CXS

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2017-08-18
11:21
[PUBDB-2017-09518] Conference Presentation (Invited)
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Disentangling interface and bulk contributions to the anisotropic magnetoresistance in Pt/Co/Pt sandwiches
SPIE Spintronics X, Meeting locationSan Diego, USA, 6 Aug 2017 - 10 Aug 20172017-08-062017-08-10


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2017-08-18
11:16
OpenAccess [PUBDB-2017-09517] Journal Article
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Domain Walls in Bent Nanowires
ddc:530
The influence of geometric parameters on the magnetic fine structure of domain walls in bent nanowires is investigated. The domain pattern in the soft-magnetic Co$_{39}$Fe$_{54}$Si$_7$ alloy is studied via scanning electron microscopy with polarization analysis and modeled via micromagnetic simulations [...]
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2017-07-28
12:34
[PUBDB-2017-08683] Journal Article
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Diffusive dynamics during the high-to-low density transition in amorphous ice
ddc:000
Water exists in high- and low-density amorphous ice forms (HDA and LDA), which could correspond to the glassy states of high- (HDL) and low-density liquid (LDL) in the metastable part of the phase diagram. However, the nature of both the glass transition and the high-to-low-density transition are debated and new experimental evidence is needed [...]
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2017-07-20
16:51
Embargoed OpenAccess [PUBDB-2017-08100] Journal Article
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Microsecond Structural Rheology
ddc:530
The relationship between the local structure of complex liquids and their response to shear is generally not well understood. This concerns, in particular, the formation of particle strings in the flow direction or hydroclusters, both important for the understanding of shear thinning and thickening phenomena. [...]
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2017-06-21
15:59
OpenAccess [PUBDB-2017-05772] Journal Article
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Thermal conductance of interfaces with amorphous $SiO_{2}$ measured by time-resolved magneto-optic Kerr-effect thermometry
ddc:530
We use time-resolved magneto-optic Kerr effect and ultrathin Co/Pt transducer films to perform thermal-transport experiments with higher sensitivity and greater time resolution than typically available in studies of interfacial thermal transport by time-domain thermoreflectance. We measure the interface conductance between Pt and amorphous SiO$_2$ using Pt/Co/Pt ferromagnetic transducer films with thicknesses between 4.2 and 8.2 nm and find an average value of $G_{Pt} ≈$ 0.3 GW m$^{−2} K^{−1}$ [...]
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2017-04-28
11:28
OpenAccess [PUBDB-2017-02077] Book/Report/Dissertation / PhD Thesis
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Dynamics of colloidal systems of magnetic nanoparticles under influence of magnetic fields investigated by XPCS
[DESY-THESIS-2017-023]

Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS, 187 pp. (2017) [10.3204/PUBDB-2017-02077] = Universität Hamburg, Diss., 2017  GO
This thesis investigates structural properties and the underlying microscopic dynamicsof suspensions of $\alpha$-FeOOH goethite platelets in water under the influence of magneticfields. Goethite particles show unusual physical properties and a rich phase diagram,which makes their suspensions an object of high interest for research in the area of”smart nanoparticles”. [...]
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2017-02-28
17:05
OpenAccess [PUBDB-2017-01233] Poster
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Fast Detectors and Electronics for Nanosecond Time Resolved Experiments
DESY Photon Science Users Meeting, Meeting locationHamburg, DESY, Germany, 26 Jan 2017 - 27 Jan 20172017-01-262017-01-27

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2016-12-02
11:00
OpenAccess [PUBDB-2016-05837] Journal Article
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Structure beyond pair correlations: X-ray cross-correlation from colloidal crystals
ddc:540
The results of an X-ray cross-correlation analysis (XCCA) study on hard-spherecolloidal crystals and glasses are presented. The article shows that cross-correlation functions can be used to extract structural information beyond thestatic structure factor in such systems. [...]
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2016-11-23
14:00
[PUBDB-2016-05542] Lecture

High pressure SAXS studies
Lecture at EMBL- Hamburg / EMBO Practical Course on Solution Scattering from Biological Macromolecules (Hamburg, Germany), 21 Oct 2016 - 21 Oct 20162016-10-212016-10-21

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2016-11-23
12:06
OpenAccess [PUBDB-2016-05540] Journal Article
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Stabilizing effect of TMAO on globular PNIPAM states: preferential attraction induces preferential hydration
ddc:540
We study the effect of the organic co-solute trimethylamine N-oxide (TMAO) on the volume phase transition of microgel particles made from poly(N-isopropylacrylamide) (PNIPAM) using dynamic light scattering (DLS) and all-atom molecular dynamics (MD) simulations. The DLS measurements reveal a continuous TMAO-induced shrinking process from a coil to a globular state of PNIPAM microgel particles. [...]
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