cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2410229-1
title: Exploring neutron Orbital Angular Momentum (OAM) as a future probe of topological materials

description: It has been known for some time that light can carry orbital angular momentum (OAM) in addition to the more familiar spin angular momentum that is manifested in the polarization of the light wave. Optical OAM expands the arsenal of tools available to explore matter though light-matter interactions. More recently, experiments have demonstrated x-ray OAM and there are indications that beams of quantum particles with non-zero mass (such as neutrons) may also exhibit this phenomenon. We plan to measure neutron scattering from forked diffraction gratings, made using electron-beam lithography by our collaborators at the Center for Nanophase Materials Science at Oak Ridge Lab. Gratings of this type have been shown to produce "vortex light" (i.e. waves with specific values of OAM) when exposed to electromagnetic radiation. Our experiment will be a first step in exploring whether neutron OAM can be added to the neutron scattering toolbox to probe materials and, in particular, to characterize topological structures such as skyrmions that have been proposed for next generation electronic components.
DOI: 10.34816/ifao.archives.232755
title: SAQQARA_nb_1994_03249

description: Référence : nb_1994_03249<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/qyn-pr8-s37
title: Armeria maritima (Mill.) Willd.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/tkj-q31-500
title: Arctium L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310001
title: Residual stress mapping in high yttria thermally sprayed zirconium oxide coatings

description: Need for high thermal efficiency in aero and land-based turbine engines push the envelope for low conductivity and high strength thermal barrier coatings (TBC’s). Prominent approach towards achieving this is through high yttria content in zirconia to stabilize zirconia . High yttria content degrades the thermal shock resistance of the TBC system. The project therefore aims to explore the residual stress profile of 8YSZ (as sprayed) and 20YSZ (in as sprayed and thermal shock conditions). Mapping residual stresses will provide qualitative information on the thermal shock life of the TBC system thereby eliminating the need of expensive and time-consuming thermal shock studies on all the possible chemistries. Due to the heavy lattice distortion unleashed by the high atomic number rare earth elements, it is expected that neutron diffraction would be able to predict the residual stress and quantify the thermal shock. Neutron diffraction residual strain analysis is expected to expedite the selection of the best composition that would suit both the requirements of thermal shock resistance as well as low thermal conductivity. Reduced tensile residual stress are known to be beneficial to the fatigue life of coatings leading to enhanced thermal cycling behavior – which demonstrates wider impact of this investigation.
DOI: 10.5286/isis.e.rb2410321
title: Superionic Li diffusion and Anharmonic Phonons in Li2InxSc0.666−xCl4 (0 ≤ x ≤ 0.666)

description: Li2InxSc0.666−xCl4 (0 ≤ x ≤ 0.666) is a solid-electrolyte that has shown great potential. Our large-scale molecular dynamics simulations based on a machine-learned force field indicate that this compound exhibits superionic behavior, with calculated diffusion coefficients of 10-6 cm2/sec above 400 K. We plan to perform inelastic neutron scattering and quasi-elastic neutron scattering measurements on the compound, specifically Li2InxSc0.666−xCl4 (x=0.333), to study its Li-diffusion behavior and lattice dynamics. The ab initio calculated activation energy for the diffusion of Li in Li2InxSc0.666−xCl4 is about 0.33 eV, indicating that the compound is likely to have higher ionic conductivity and lower conduction temperature, resulting in significant QENS broadening (&gt; 20 microeV). Our previous studies on Na/Li-based superionic conductors have shown that anharmonic lattice dynamics are important for the onset of diffusion in these systems. However, Li2InxSc0.666−xCl4 (x=0.333) exhibits superionic behavior at near room temperature, making it a particularly interesting material for further study. We expect that at elevated temperatures (700K and 900K), the fast-Li diffusion will lead to significant changes in the vibrational spectra, and will be strongly manifested in the QENS signal. The INS and QENS data on Li2In0.333Sc0.333Cl4 would be useful to know the role of lattice dynamics on lithium diffusion, the nature of diffusion, jump length, and the corresponding activation energy.
DOI: 10.5286/isis.e.rb2410321-1
title: Superionic Li diffusion and Anharmonic Phonons in Li2InxSc0.666−xCl4 (0 ≤ x ≤ 0.666)

description: Li2InxSc0.666−xCl4 (0 ≤ x ≤ 0.666) is a solid-electrolyte that has shown great potential. Our large-scale molecular dynamics simulations based on a machine-learned force field indicate that this compound exhibits superionic behavior, with calculated diffusion coefficients of 10-6 cm2/sec above 400 K. We plan to perform inelastic neutron scattering and quasi-elastic neutron scattering measurements on the compound, specifically Li2InxSc0.666−xCl4 (x=0.333), to study its Li-diffusion behavior and lattice dynamics. The ab initio calculated activation energy for the diffusion of Li in Li2InxSc0.666−xCl4 is about 0.33 eV, indicating that the compound is likely to have higher ionic conductivity and lower conduction temperature, resulting in significant QENS broadening (&gt; 20 microeV). Our previous studies on Na/Li-based superionic conductors have shown that anharmonic lattice dynamics are important for the onset of diffusion in these systems. However, Li2InxSc0.666−xCl4 (x=0.333) exhibits superionic behavior at near room temperature, making it a particularly interesting material for further study. We expect that at elevated temperatures (700K and 900K), the fast-Li diffusion will lead to significant changes in the vibrational spectra, and will be strongly manifested in the QENS signal. The INS and QENS data on Li2In0.333Sc0.333Cl4 would be useful to know the role of lattice dynamics on lithium diffusion, the nature of diffusion, jump length, and the corresponding activation energy.
DOI: 10.3535/pkc-pq0-j2c
title: Veronica officinalis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2300081-2
title: HOW WERE THEY BENT? THE ART OF DISTORTING A HALLSTATT C PERIOD IRON SWORD: A NEUTRON DIFFRACTION STUDY

description: In the Netherlands, a few bent iron swords from the Early Iron Age Hallstatt C period were discovered. The most famous bent sword was a Mindleheim-type sword found ‘curled-up’ inside a bronze situla in the Chieftain’s burial in Oss in 1933. In addition to the sword from Oss, several other bent swords dating to the Hallstatt C period have been found in the Netherlands, for example, the sword-grave of Heythuizen and the wagon-grave of Wijchen. The question remains, how were these swords bent, by brute force or by heating and hammering? Could this have been done at the place of burial or was it necessary to bring the sword to a smithy? Knowing how the swords were bent, implies the knowledge, skills and equipment of people in this period and thus adds to the archaeological framework around the Hallstatt culture and burials found in the Netherlands. The aim of this research is to study the bending process on the basis of the microstructure of the swords, preferably by non-invasive methods. Therefore, the structure and composition of the metal (and the corrosion) will be studied through neutron imaging and diffraction. Fortunately, we could sample one of the swords which enables us to perform a complementary method, SEM-EBSD. The results of neutron imaging will be compared to the metal structure seen in the cross-sections.
DOI: 10.5286/isis.e.rb2490161
title: Tomography of unbroken mini tensile specimen
DOI: 10.5286/isis.e.rb2490161-1
title: Tomography of unbroken mini tensile specimen
DOI: 10.34816/ifao.archives.232756
title: SAQQARA_nb_1994_03250

description: Référence : nb_1994_03250<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/6nn-0vh-3aw
title: Euphorbia paralias L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/lbd-hs4-p96
title: Fragaria moschata Duchesne

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410057
title: The Magnetic Structure of the Novel Hexagonal Perovskite Ba3NdMo2O9

description: Oxides with the general formula Ba3AM2O9 crystallising in the 6H perovskite structure, with magnetic cations, can show geometrically frustrated states because the arrangement of the metal cations creates triangular motifs parallel to the ab planes. We have recently synthesised the novel phase Ba3NdMo2O9. Preliminary neutron diffraction data indicate that there is no change in crystal symmetry upon cooling, but very weak magnetic diffraction peaks are observed below 10 K. This set of reflections can be indexed by the k = (1/2, 1/4, 0) propagation vector, which is unusual for hexagonal perovskites. Using representational analysis, the best fit to the data suggests that the Nd moments order ferromagnetically along the c-axis, while the two Mo sublattices order antiferromagnetically with respect to each other with moments aligned parallel to the a-axis. The preliminary results also suggest that only half of the Mo4+/5+ spins order, which is highly unusual. Unfortunately, due to the low statistical data, weak nature of the magnetic reflections, combined with structural/magnetic contributions coming from the Ba2NdMoO6 impurity phase we are unable to determine if this is the only configuration possible to describe the data. We have now made a phase pure sample of Ba3NdMo2O9. In order to conclusively determine the magnetic structure of Ba3NdMo2O9, we propose to perform a variable temperature neutron diffraction experiment on the high resolution, long-wavelength WISH diffractometer.
DOI: 10.5286/isis.e.rb2410057-1
title: The Magnetic Structure of the Novel Hexagonal Perovskite Ba3NdMo2O9

description: Oxides with the general formula Ba3AM2O9 crystallising in the 6H perovskite structure, with magnetic cations, can show geometrically frustrated states because the arrangement of the metal cations creates triangular motifs parallel to the ab planes. We have recently synthesised the novel phase Ba3NdMo2O9. Preliminary neutron diffraction data indicate that there is no change in crystal symmetry upon cooling, but very weak magnetic diffraction peaks are observed below 10 K. This set of reflections can be indexed by the k = (1/2, 1/4, 0) propagation vector, which is unusual for hexagonal perovskites. Using representational analysis, the best fit to the data suggests that the Nd moments order ferromagnetically along the c-axis, while the two Mo sublattices order antiferromagnetically with respect to each other with moments aligned parallel to the a-axis. The preliminary results also suggest that only half of the Mo4+/5+ spins order, which is highly unusual. Unfortunately, due to the low statistical data, weak nature of the magnetic reflections, combined with structural/magnetic contributions coming from the Ba2NdMoO6 impurity phase we are unable to determine if this is the only configuration possible to describe the data. We have now made a phase pure sample of Ba3NdMo2O9. In order to conclusively determine the magnetic structure of Ba3NdMo2O9, we propose to perform a variable temperature neutron diffraction experiment on the high resolution, long-wavelength WISH diffractometer.
DOI: 10.5286/isis.e.rb2490167-1
title: Duplicate Of: Testing Level of Deuteration in a Magnetic MOF - 2
DOI: 10.3535/er0-hpk-0gw
title: Aira praecox L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/r25-l7q-emy
title: Sonchus arvensis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410090-1
title: INS study of multifunctional zeolites for catalytic conversion of plastic wastes to ethylene

description: Efficient synthesis of value-added chemicals from plastic wastes remains a major challenge. We request 5 days on MAPS to carry out an inelastic neutron scattering (INS) study of a multifunctional zeolite catalyst (Ru/SAPO-34-Nb: Ru-loaded Nb-doped SAPO-34 zeolite) for the highly selective conversion of PET (polyethylene terephthalate) to ethylene. The proposed study will investigate the vibrational spectra (e.g., C-H and O-H stretching modes) of the catalyst, adsorption of guest molecules (PET and glycol) and any possible reaction intermediates on catalyst surface. In particular, this study aims to reveal the roles of Nb(V)/Ru sites and Si-O-Al/P-O-Al groups in the binding to guest molecules and in the catalytic reactions. This recently-discovered multifunctional catalyst (unpublished) exhibit record high selectivity of ethylene from the conversion of PET wastes.
DOI: 10.5286/isis.e.rb2490142
title: Crystal electric field levels in NiPS3 and MnPS3
DOI: 10.5286/isis.e.rb2490142-1
title: Crystal electric field levels in NiPS3 and MnPS3
DOI: 10.34816/ifao.archives.232757
title: SAQQARA_nb_1994_03251

description: Référence : nb_1994_03251<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/dza-7bk-ma1
title: Anthyllis vulneraria L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/em6-1jp-ncv
title: Cochlearia L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410090
title: INS study of multifunctional zeolites for catalytic conversion of plastic wastes to ethylene

description: Efficient synthesis of value-added chemicals from plastic wastes remains a major challenge. We request 5 days on MAPS to carry out an inelastic neutron scattering (INS) study of a multifunctional zeolite catalyst (Ru/SAPO-34-Nb: Ru-loaded Nb-doped SAPO-34 zeolite) for the highly selective conversion of PET (polyethylene terephthalate) to ethylene. The proposed study will investigate the vibrational spectra (e.g., C-H and O-H stretching modes) of the catalyst, adsorption of guest molecules (PET and glycol) and any possible reaction intermediates on catalyst surface. In particular, this study aims to reveal the roles of Nb(V)/Ru sites and Si-O-Al/P-O-Al groups in the binding to guest molecules and in the catalytic reactions. This recently-discovered multifunctional catalyst (unpublished) exhibit record high selectivity of ethylene from the conversion of PET wastes.
DOI: 10.5286/isis.e.rb2490125-1
title: Doping and oxygen non-stoichiometry in generation 3b cathode materials 4
DOI: 10.5286/isis.e.rb2490166-1
title: Testing Level of Deuteration in a Magnetic MOF
DOI: 10.3535/sd5-794-5cq
title: Rumex acetosella L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/y1a-hq3-hw9
title: Campanula rotundifolia L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2490122-1
title: Doping and oxygen non-stoichiometry in generation 3b cathode materials
DOI: 10.5286/isis.e.rb2490123-1
title: Doping and oxygen non-stoichiometry in generation 3b cathode materials 2
DOI: 10.5286/isis.e.rb2490124-1
title: Doping and oxygen non-stoichiometry in generation 3b cathode materials 3
DOI: 10.34816/ifao.archives.232758
title: SAQQARA_nb_1994_03252

description: Référence : nb_1994_03252<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/7lk-yzt-ys8
title: Cerastium L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/zx0-kw5-me8
title: Cotoneaster Medik.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2490157-1
title: Structure and Oxygen content of YBi2OxCl0.5Se0.5
DOI: 10.5286/isis.e.rb2490158-1
title: Structure and Oxygen content of YBi2OxCl0.7Se0.3
DOI: 10.5286/isis.e.rb2490159-1
title: Structure and Oxygen content of YBi2OxCl
DOI: 10.34816/ifao.archives.232759
title: SAQQARA_nb_1994_03253

description: Référence : nb_1994_03253<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/7mh-n6k-91n
title: Carlina vulgaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/cad-4vm-4f4
title: Trifolium dubium Sibth.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2490073-1
title: powder sample Ce1Zr1Sn1
DOI: 10.5286/isis.e.rb2490074-1
title: powder sample LLCTO
DOI: 10.5286/isis.e.rb2490075-1
title: powder sample LLZTO
DOI: 10.3535/jta-q0t-26r
title: Veronica arvensis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310404-1
title: Interaction between water and CO2 in smectite clay studied by inelastic neutron scattering

description: Interactions between CO2 and clay attracts considerable interest in the scientific community. This is partly motivated by the presence of large amounts of clay in caprock formations that act as flow barriers in storage sites for CO2. However, sorption mechanisms of carbon dioxide by clays are not completely understood, and previous investigations remain controversial. One of the hypotheses for the driving mechanisms is the interaction between the gas and the residual H2O in the clay interlayer space. This interaction affect the kinetics of CO2 intercalation. By using inelastic scattering, we have identified a hitherto overlooked mechanism for CO2 adsorption in hectorite clays. We have demonstrate a valid new approach, where we study the mechanism for CO2 adsorption from the perspective of interlayer hydrogeneous species, hydroxides and water.
DOI: 10.5286/isis.e.rb2490071-1
title: powder sample Ce1Zr1
DOI: 10.5286/isis.e.rb2490072-1
title: powder sample Ce1Zr8
DOI: 10.34816/ifao.archives.232760
title: SAQQARA_nb_1994_03254

description: Référence : nb_1994_03254<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/72n-8lc-k98
title: Avenula pubescens (Huds.) Dumort.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/mwp-gfv-220
title: Vicia sativa L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220470-4
title: Characterization of RS relaxation and precipitation behaviours as a function of energy input in a L-PBF IN718 material

description: The Laser based Powder Bed Fusion (L-PBF) technique alows the manufacturing of complex shaped components. Nevertheless, a disadvantage of this technology is the high magnitudes of residual stress (RS) present in as-built components. The optimal heat treatment to remove the potentially deleterious RS needs to be balanced against obtaining suitable microstructures and properties. Most RS studies on IN718 relaxation focus on a single processing strategy, investigating ex-situ specimens at discrete temperatures and times. Nevertheless, the influence of the componnet thermal history on recrystallization and precipitation of the strengthening phases has been not yet investigated in detail. Therefore, an in-situ study fis proposed to provide further fundamental understanding of the stress relaxation behaviour of L-PBF IN718 microstructures as a function of manufacturing process parameters.
DOI: 10.5286/isis.e.rb2310404
title: Interaction between water and CO2 in smectite clay studied by inelastic neutron scattering

description: Interactions between CO2 and clay attracts considerable interest in the scientific community. This is partly motivated by the presence of large amounts of clay in caprock formations that act as flow barriers in storage sites for CO2. However, sorption mechanisms of carbon dioxide by clays are not completely understood, and previous investigations remain controversial. One of the hypotheses for the driving mechanisms is the interaction between the gas and the residual H2O in the clay interlayer space. This interaction affect the kinetics of CO2 intercalation. By using inelastic scattering, we have identified a hitherto overlooked mechanism for CO2 adsorption in hectorite clays. We have demonstrate a valid new approach, where we study the mechanism for CO2 adsorption from the perspective of interlayer hydrogeneous species, hydroxides and water.
DOI: 10.3535/044-anx-3s7
title: Radiola linoides Roth

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/60g-n10-g90
title: Carex hostiana DC.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410553
title: Molecular investigation of cross-linking and thermo-gelling of a novel collagen-based hydrogel

description: This project aims to study the molecular mechanisms behind curing, shear-thinning, and self-healing properties of an injectable gel designed to provide mechanical support to the damaged region of the heart after heart-attack. Myocardial infarction, commonly known as heart-attack, happens due to occlusion of an artery leading to lack of oxygen and nutrient supply resulting in death of cardiac cells responsible for beating. As a result, heart´s ability to pump blood diminishes resulting in enlargement of the heart due to accumulated blood in the chamber and the left ventricular (LV) wall began to thin. Collagen based injectable gels were used before to provide mechanical support to the LV wall or to deliver therapeutic cells or drugs. However, these gels were formed through collagen physical assembly. Our solution is a chemically crosslinked collagen gel which is self-healing. This gel can provide mechanical support as well as suitable for delivery of cells or drugs. Understanding the molecular-level mechanisms of self-healing could help us develop a more controlled gel system. To achieve this, we propose using SANS experiments to observe the real-time formation of structural elements during the gel curing process. These gels remain fully transparent throughout the gelling process making SANS an indispensable technique, as it is challenging to do so using other available scattering methods.