Review

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2019-05-09
15:40
[PUBDB-2019-02230] Review/Journal Article

Unraveling the Reactivity of Minium toward Bicarbonate and the Role of Lead Oxides Therein
Understanding the reactivity of (semiconductor) pigments provides vital information on how to improve conservation strategies for works of art to avoid rapid degradation of the pigments. This study focuses on the photoactivity of minium (Pb$_3$O$_4$), a semiconductor pigment that gives rise to strong discoloration phenomena upon exposure to various environmental conditions. [...]
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2019-05-09
15:19
[PUBDB-2019-02229] Review/Journal Article
et al
Photochemistry of Artists’ Dyes and Pigments: Towards Better Understanding and Prevention of Colour Change in Works of Art
The absorptionof lightgivesapigmentits colourand its reasonforbeing,but it alsocreatesexcitedstates,that is,new moleculeswithanenergyexcessthat can be dissipatedthroughdegradationpathways.Photodegradationprocessesprovokelong-term,cumulativeand irre-versiblecolourchanges(fading,darkening,blanching) of whichthepredictionand preventionare challengingtasks.Ofall the environ-mentalrisksthat affectheritagematerials,light exposureis the onlyone that cannotbe controlledwithoutany impacton the optimaldis-playof the exhibit.Light-inducedalterationsare not onlyassociatedwiththe pigmentitselfbut also withits interactionswithsupport/binderand,in turn,are furthercomplicatedby the natureof the environ-mentalconditions.Inthis Minireviewwe investigatehowchemistry,encompassingmulti-scaleanalyticalinvestigationsof worksof art,computationalmodellingand physicaland chemicalstudiescontrib-utes to improveour predictionof artworkappearancebeforedegra-dationand to establisheffectivepreventiveconservationstrategies..
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2018-07-12
14:27
[PUBDB-2018-02586] Review/Journal Article
et al
Terahertzstrahlen dirigieren Elektronenpakete
Physik in unserer Zeit 49(4), 165 - 166 () [10.1002/piuz.201870406]  GO
Ultraschnelle Elektronenmikroskope und Röntgenstrahlungsquellen basieren auf beschleunigten und präzise geformten Elektronenpaketen. Unsere Gruppe am DESY konnte kürzlich zeigen, wie mit sehr hochfrequenter Strahlung im Terahertzbereich kompakte Bauelemente für die Elektronenbeschleunigung realisiert und mit leichter Abwandlung auch zur zeitlichen und räumlichen Pulsformung sowie Pulscharakterisierung verwendet werden können..
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2017-12-21
11:46
OpenAccess [PUBDB-2017-13944] Review/Book
et al
High Energy Density Irradiation With MAMI LINAC
8th International Particle Accelerator Conference, IPAC2017, CopenhagenCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 Geneva : JACoW, J.Phys.Conf.Ser. 874(2017), () [10.18429/JACoW-IPAC2017-TUPAB003]  GO
In order to build a positron source for the ILC, a high energy density irradiation is needed to test the used materials. At the MAMI linear accelerator such a radiation can be provided at different electron energies. [...]
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2017-12-18
13:44
OpenAccess [PUBDB-2017-13636] Review/Journal Article

In situ monitoring metal-ligand exchange processes by optical spectroscopy and X-ray diffraction analysis: a review
Knowledge about the mechanisms involved in the structural development of solid materials at the atomic level is essential for designing rational synthesis protocols for these compounds, which may be used to improve desired technical properties, such as light emission, conductivity, magnetism, porosity or particle size, and may allow the tailored design of solid materials to generate the aforementioned properties. Recent technological advancements have allowed the combination of synchrotron-based in situ X-ray diffraction (XRD) with in situ optical spectroscopy techniques, providing researchers with remarkable opportunities to directly investigate structural changes during synthesis reactions [...]
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2015-04-13
10:46
[PUBDB-2015-01902] Review/Journal Article
et al
The Next Generation of Axion Helioscopes: The International Axion Observatory (IAXO)
13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013, AsilomarAsilomar, California, US, 8 Sep 2013 - 13 Sep 20132013-09-082013-09-13 Physics procedia 61, 193 - 200 () [10.1016/j.phpro.2014.12.031]  GO
The International Axion Observatory (IAXO) is a proposed 4th-generation axion helioscope with the primary physics research goal to search for solar axions via their Primakoff conversion into photons of 1 – 10 keV energies in a strong magnetic field. IAXO will achieve a sensitivity to the axion-photon coupling gaγ down to a few ×10−12 GeV−1 for a wide range of axion masses up to ∼ 0.25 eV. [...]
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2014-09-11
10:37
[PUBDB-2014-03437] Review/Contribution to a book
et al
SXRD measurements of residual stresses in sintered diamond–cobalt composites
Materials Science Forum
MECASENS IV, WienWien, Austria, 24 Sep 2007 - 26 Sep 20072007-09-242007-09-26
Uetikon : Trans Tech Publ. 571-572, ()
Diamond-cobalt composites are used for cutting tools. Residual stress after manufacturecan reduce the lifetime of such composite cutting tools and, hence, the stress state needs to be wellunderstood. [...]
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2014-09-11
10:27
[PUBDB-2014-03436] Review/Contribution to a book
et al
Residual stresses in sintered diamond–cobalt composites
Materials Science Forum
European Conference on Residual Stresses 7, ECRS 7, BerlinBerlin, Germany, 13 Sep 2006 - 15 Sep 20062006-09-132006-09-15
Uetikon : Trans Tech Publ. 524-525, ()
Manufacturing diamond-cobalt composites by sintering results in residual stresses due tothe mismatch of thermal expansion coefficients mainly. To understand the influence ofmanufacturing process parameters on residual stresses of sintered diamond-cobalt compositessamples are produced by different process parameters. [...]
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2014-09-11
10:16
[PUBDB-2014-03435] Review/Contribution to a book
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The Influence of Multilayer Design on Residual Stress Gradients in Ti/TiAlN Systems
Materials Science Forum
The 9th International Conference on Residual Stresses , ICRS9, Garmisch-PartenkirchenGarmisch-Partenkirchen, Germany, 7 Oct 2012 - 9 Oct 20122012-10-072012-10-09
Uetikon : Trans Tech Publ. 768-769, () [10.4028/www.scientific.net/MSF.768-769.264]  GO
In this research work, Ti/TiAlN multilayers of various designs were deposited onsubstrates pretreated by nitriding and etching procedures. The influence of the multilayer design onresidual stress depth profiles was systematically analyzed for multilayers with different Titaniuminterlayer thicknesses. [...]
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2014-04-17
17:31
[DESY-2014-02625] Review/Contribution to a book

Leptogenesis
Scholarpedia Paris : Scholarpedia ()

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