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2019-06-04
14:06
OpenAccess [PUBDB-2019-02412] Journal Article
et al
Characterization of Native Oxide and Passive Film on Austenite/Ferrite Phases of Duplex Stainless Steel Using Synchrotron HAXPEEM
A new measurement protocol was used for microscopic chemical analysis of surface oxide films with lateral resolution of 1 μm.The native air-formed oxide and an anodic passive film on austenite and ferrite phases of a 25Cr-7Ni super duplex stainless steelwere investigated using synchrotron hard X-ray photoemission electron microscopy (HAXPEEM). Pre-deposited Pt-markers, incombination with electron backscattering diffraction mapping (EBSD), allowed analysis of the native oxide on individual grains ofthe two phases and the passive film formed on the same area after electrochemical polarization of the sample. [...]
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2019-02-27
13:56
Embargoed OpenAccess [PUBDB-2019-01264] Journal Article
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In Situ Studies of the Electrochemical Reduction of a Supported Ultrathin Single-Crystalline $RuO_{2}$ (110) Layer in an Acidic Environment
With in situ surface X-ray diffraction (SXRD)and X-ray reflectivity (XRR) in combination with ex situcharacterization by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and cyclic voltamme-try, the electrochemical reduction of an ultrathin (1.66 nmthick) single-crystalline RuO$_2$(110) layer supported onRu (0001) is studied in an acidic environment, providingclear-cut evidence and mechanistic details for the trans-formation of RuO$_2$ to hydrous RuO$_2$ and metallic Ru. The reduction process proceeds via proton insertion into the RuO$_2$ (110)lattice. [...]
Published on 2019-01-24. Available in OpenAccess from 2020-01-24.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA); External link: Download fulltextFulltext
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2019-02-26
15:33
Embargoed OpenAccess [PUBDB-2019-01256] Journal Article/Contribution to a conference proceedings/Contribution to a book
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Atomically thin monolayers of metal organic frameworks (MOFs) through implementing a Langmuir-Schaefer method
Recent Advances on Environment, Chemical Engineering and Material, SliemaSliema, Malta, 22 Jun 2018 - 24 Jun 20182018-06-222018-06-24 AIP conference proceedings 2022, 020007 () [10.1063/1.5060687]  GO
Metal Organic Frameworks (MOFs) have been of increasing interest over the last few years. They are structures which consist of metal ions or clusters coordinated to organic ligands in order to form one-, two-, or three-dimensional networks that often exhibit high porosity, an asset that is commonly exploited in hydrogen storage, heterogeneous catalysis and photo-catalysis as well as gas separation. [...]
Published on 2018-11-07. Available in OpenAccess from 2019-11-07.: Download fulltextPDF Download fulltextPDF (PDFA); External link: Download fulltextFulltext
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2019-01-10
12:20
[PUBDB-2019-00278] Journal Article
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Fabrication of Strain Gauges via Contact Printing: A Simple Route to Healthcare Sensors Based on Cross-Linked Gold Nanoparticles
In this study, we developed a novel and efficient process for the fabrication of resistive strain gauges for healthcare-related applications. First, 1,9-nonanedithiol cross-linked gold nanoparticle (GNP) films were prepared via layer-by-layer (LbL) spin-coating and subsequently transferred onto flexible polyimide foil by contact printing. [...]
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2018-12-17
17:32
OpenAccess [PUBDB-2018-05628] Journal Article
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Self-assembly morphology of block copolymers in sub-10 nm topographical guiding patterns
In this paper, we investigate the directed self-assembly of block copolymers in topographical guiding patternswith feature sizes in the range of the block copolymer half-pitch. In particular, we present the selfassemblyof an 11.7 nm half-pitch block copolymer in sub-10 nm resolution guiding patterns fabricated bythe direct e-beam exposure of hydrogen silsesquioxane (HSQ). [...]
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2018-12-17
16:48
OpenAccess [PUBDB-2018-05626] Journal Article
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Nano-scale oxide formation inside electrochemically-formed Pt blisters at a solid electrolyte interface
We report on platinum oxide formation during electrochemical anodic polarization of a platinum film on yttriastabilizedzirconia (YSZ) under electrochemical oxygen potential control. The electrochemical potential drivesoxygen through the YSZ electrolyte towards a nominally 175 nm thin Pt film, which we found to locally delaminatefrom the substrate by forming nano-scale blisters. [...]
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2018-11-29
10:56
OpenAccess [PUBDB-2018-04961] Book/Report/Dissertation / PhD Thesis

Atomic Structure and Stability of Magnetite (001)
[DESY-THESIS-18-036]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 228 pp. () [10.3204/PUBDB-2018-04961] = Dissertation, Universität Hamburg, 2018  GO
Magnetite is a material used for catalysts in some of today’s most important industrial processes,the Haber-Bosch and Fischer-Tropsch processes. It has raised attention due to its catalyticbehaviour in the water-gas shift reaction, its potential use in spintronic devices and hierarchicalmaterials. [...]
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2018-10-18
16:48
OpenAccess [PUBDB-2018-03847] Journal Article
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Faceting of local droplet-etched nanoholes in AlGaAs
Nanoholes, drilled in the (001) surface of AlGaAs by local Al droplet etching, are shown to consist of faceted inner walls. The most prominent facets of the inverted pyramidlike nano-sized etch pits are the {111}A and {1$\bar{1}$1}B surfaces, which differ in their atomic surface terminations [...]
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2018-09-26
16:50
[PUBDB-2018-03617] Journal Article/Contribution to a conference proceedings
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Hard X-ray Resonant Ptychography for Chemical Imaging at the Sensitivity Limit
14th International Conference on X-ray Microscopy, XRM2018, SaskatoonSaskatoon, Canada, 19 Aug 2018 - 24 Aug 20182018-08-192018-08-24 Microscopy and microanalysis 24(S2), 26 - 27 () [10.1017/S1431927618012564]  GO
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2018-08-31
16:02
Embargoed OpenAccess [PUBDB-2018-03329] Journal Article
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Dehydrogenation of Liquid Organic Hydrogen Carriers on Supported Pd Model Catalysts: Carbon Incorporation Under Operation Conditions
Catalysis letters 148(9), 2901 - 2910 () [10.1007/s10562-018-2487-0]  GO
Liquid organic hydrogen carriers (LOHCs) have great potential as a hydrogen storage medium needed for a future sustainable energy system. Dehydrogenation of LOHCs requires a catalyst, such as supported Pd nanoparticles. [...]
Published on 2018-07-18. Available in OpenAccess from 2019-07-18.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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