cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2469000-1
title: Investigating different gel structures formed by bovine casein micelles, goat casein micelles, and reassembled casein micelles.

description: This proposal describes a new approach to making animal-free dairy products by producing casein from microorganisms and then assembling them into casein micelles. The gelation of casein micelles is an essential step towards dairy products such as yoghurt and cheese. To investigate the possibility of making dairy products with this approach, we would like to compare the gel structure formed by native casein micelles (extracted from milk) with reassembled casein micelles (made with lab-purified caseins). Small-angle X-ray and neutron scattering have been shown to be a suitable method to describe the internal structure of casein micelles. However, after acidification or renneting, casein micelles tend to aggregate, and the aggregated structures are too big for small-angle scattering. Spin-echo small-angle neutron scattering (SESANS) has been shown to be a powerful tool for investigating milk gels (Tromp & Bouwman, 2007). Therefore, we would like to apply SESANS measurement on native casein micelles (NCMs) and reassembled casein micelles (RCMs) gels to investigate their gel structures. We will prepare 5 types of micelles including NCMs from bovine and goat milk, RCMs made with bovine and goat casein composition and RCMs with increased beta-casein content. We will also apply a heat treatment on those micelles. With this experiment, we expect to gain important knowledge on how casein micelles source, casein composition and heat treatment affect the gel structure formation.
DOI: 10.3535/77j-b6v-6r7
title: Selinum carvifolia (L.) L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/wzx-m0p-fkp
title: Arbutus unedo L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310262
title: Non-destructive Inspection of a 3D-printed Lithium-Molybdenum Heat Pipe

description: We propose to use neutron tomography in order to analyse the distribution of the lithium in the interior of a 3D printed thermosyphon. This experiment will provide what the authors believe will be the first set of neutron tomography data on a 3D printed lithium-molybdenum thermosyphon. The results of this experiment will be vital in assessing and improving the quality of our processes in charging our lithium-molybdenum 3D-printed heat pipes
DOI: 10.5286/isis.e.rb2320033
title: Advancing interfacial engineering in energy materials by the deuteration of ligand shells in colloidal nanocrystal quantum dots

description: Colloidal nanocrystal quantum dots (“QD”) are integral components in optoelectronic devices and energy harvesting materials. They are inorganic nanocrystals a few nanometres in diameter coated with an organic ligand shell. The ligand shell controls the electronic and physical-chemical properties of the QD interface, providing solubility and colloidal stability. In designing functional optoelectronic materials, it can be advantageous to swap the native organic ligands, typically molecules of oleic acid which have formed oleates on the QD surface, for “active ligands” with desired electronic properties. SANS is a uniquely powerful tool to gain quantitative information about the physical composition of the ligand shell. In our wider research we wish to understand the mechanism and results of ligand exchange procedures. The aims of this experiment are to demonstrate QD with a finely controlled range of deuteration states in the ligand shell, and to confirm this composition using SANS. SANS is uniquely sensitive to QD structure. In the proposed experiment, we will exploit the ISIS SANS instruments’ excellent signal-to-noise and resolution coupled with the MIT group’s advanced QD modelling procedures and insights into QD processing to gain the most accurate picture to date of ligand shell structure in lead sulfide-oleic acid QD. This work will provide a platform for a wide range of new research directions in the QD community.
DOI: 10.5286/isis.e.rb2320033-1
title: Advancing interfacial engineering in energy materials by the deuteration of ligand shells in colloidal nanocrystal quantum dots

description: Colloidal nanocrystal quantum dots (“QD”) are integral components in optoelectronic devices and energy harvesting materials. They are inorganic nanocrystals a few nanometres in diameter coated with an organic ligand shell. The ligand shell controls the electronic and physical-chemical properties of the QD interface, providing solubility and colloidal stability. In designing functional optoelectronic materials, it can be advantageous to swap the native organic ligands, typically molecules of oleic acid which have formed oleates on the QD surface, for “active ligands” with desired electronic properties. SANS is a uniquely powerful tool to gain quantitative information about the physical composition of the ligand shell. In our wider research we wish to understand the mechanism and results of ligand exchange procedures. The aims of this experiment are to demonstrate QD with a finely controlled range of deuteration states in the ligand shell, and to confirm this composition using SANS. SANS is uniquely sensitive to QD structure. In the proposed experiment, we will exploit the ISIS SANS instruments’ excellent signal-to-noise and resolution coupled with the MIT group’s advanced QD modelling procedures and insights into QD processing to gain the most accurate picture to date of ligand shell structure in lead sulfide-oleic acid QD. This work will provide a platform for a wide range of new research directions in the QD community.
DOI: 10.34816/ifao.archives.232752
title: SAQQARA_nb_1994_03246

description: Référence : nb_1994_03246<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/3de-9sy-vv0
title: Viola riviniana Rchb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/rmc-zax-s3q
title: Viola × bavarica Schrank

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410005-1
title: Light Alkane Competition for Pore Space in Unconventional Petroleum Reservoirs at Intermediate Thermal Maturities

description: Petroleum from unconventional reservoirs continues to be an important component of the U.S. energy endowment and is predicted to remain so in the near future. However, there is limited understanding of the fine (&lt;25 nm diameter) pore networks that exists in these geologic formations and how fluids behave in such pore networks under reservoir conditions, especially for formations producing natural gas plant liquids (i.e., methane, ethane, propane, butane, isobutane, and pentane). This lack of knowledge adds to uncertainty for estimated ultimate recovery of resources from unconventional reservoirs. To address knowledge gaps associated with the pore size distribution and behaviour of petroleum components in unconventional reservoirs we propose to use the NIMROD to determine if methane and ethane will segregate from a 50%-50% mixture into different pore sizes in a sample from the Niobrara Formation, an active unconventional petroleum play. We hypothesize that methane will be preferentially segregated into smaller pores in the Niobrara Formation sample. If this is the case, it suggests that when assessing unconventional petroleum reservoirs for natural gas plant liquids an understanding of fine porosity will be less important than when assessing these reservoirs only for methane.
DOI: 10.5286/isis.e.rb2410471-2
title: Magnetic and structural properties of the chiral spin liquid system YBaCo3FeO7

description: We propose to study magnetic and structural properties of YBaCo3FeO7, which shows a novel chiral spin liquid ground state as recently reported. The compound is a layered Kagome system, in which the anti-ferromagnetic superexchange leads to highly frustrated spin correlations and the broken spatial inversion symmetry causes an antisymmetric exchange from which a chiral short-range order state emerges. There are important unresolved magnetic features in this system, needed for the understanding of the magnetic correlations. They are related to the precise crystal structure as well as to the full 3D diffuse scattering and the 3D spin correlations. In x-ray powder diffraction at RT, YBaCo3FeO7 appears to be hexagonal, in contrast to similar compounds, showing lower, e.g. orthorhombic or trigonal symmetry. The structure will be studied with neutron powder diffraction over a wide range of temperatures, being sensitive to the Co and Fe mixing on the magnetic sites. Upon lowering temperature, hyperfine fields, first on Kagome sites below 700 K, next on trigonal sites below 50 K, have been observed by Mössbauer spectroscopy. Accordingly, the spin correlations should change from 2D Kagome-type towards 1D quasi long-range order. The existing data are confined to only 2D planar cuts in reciprocal space and do not yet provide a complete picture of the actual 3D spin correlations. 
We have large and high-quality samples available and ask for 2 days of beamtime at the instrument WISH.
DOI: 10.3535/f47-lze-fx0
title: Holosteum umbellatum L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310290
title: Unravelling Microscopic Dynamics and Phase behaviour of Lipoplexes
DOI: 10.5286/isis.e.rb2310290-1
title: Unravelling Microscopic Dynamics and Phase behaviour of Lipoplexes
DOI: 10.5286/isis.e.rb2410005
title: Light Alkane Competition for Pore Space in Unconventional Petroleum Reservoirs at Intermediate Thermal Maturities

description: Petroleum from unconventional reservoirs continues to be an important component of the U.S. energy endowment and is predicted to remain so in the near future. However, there is limited understanding of the fine (&lt;25 nm diameter) pore networks that exists in these geologic formations and how fluids behave in such pore networks under reservoir conditions, especially for formations producing natural gas plant liquids (i.e., methane, ethane, propane, butane, isobutane, and pentane). This lack of knowledge adds to uncertainty for estimated ultimate recovery of resources from unconventional reservoirs. To address knowledge gaps associated with the pore size distribution and behaviour of petroleum components in unconventional reservoirs we propose to use the NIMROD to determine if methane and ethane will segregate from a 50%-50% mixture into different pore sizes in a sample from the Niobrara Formation, an active unconventional petroleum play. We hypothesize that methane will be preferentially segregated into smaller pores in the Niobrara Formation sample. If this is the case, it suggests that when assessing unconventional petroleum reservoirs for natural gas plant liquids an understanding of fine porosity will be less important than when assessing these reservoirs only for methane.
DOI: 10.34816/ifao.archives.232753
title: SAQQARA_nb_1994_03247

description: Référence : nb_1994_03247<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/n10-z7l-rkt
title: Senecio jacobaea L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/tj4-g35-1as
title: Catapodium marinum (L.) C.E.Hubb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220299-4
title: Structure of induced currents in equilibrium superconducting states.

description: The proposed project is aimed at studying the structure of field-induced currents in the Meissner state (the primary objective) as well as in the mixed and filamentary equilibrium states of a type-II superconductor using a small-angle neutron scattering technique. As follows from a novel so-called micro-whirls model, the Meissner phase is filled with induced microscopic currents, which form a network of hexagonally ordered whirls parallel to the field H. We expect that the project will allow us to detect the structure of the induced currents and to measure the radius of the whirls and the London penetration depth. If successful, the project will open a new page in studies of superconductivity, in particular it will pave a way to measure microscopic parameters of superconductors, which are necessary for understanding of specifics of Cooper pairing in all superconducting materials.
DOI: 10.5286/isis.e.rb2410391
title: Probing Structural Origins of Heterogeneity in Deep Eutectic Solvents

description: Alkylamide-based deep eutectic solvents (DES) represent a novel class of solvents that have recently garnered significant attention for their versatile applications in various industrial processes. Despite their remarkable characteristics, the structural organization of these DES and its ramifications on the transport properties remains a puzzle. Recent observations have revealed a significantly non-linear and scale-dependent relationship between the Stokes-Einstein Breakdown (SEB) and dynamical heterogeneity, likely stemming from scale-dependent spatial heterogeneity. At the molecular scale, this heterogeneity is suggested to be linked with the creation of complexes and hydrogen bonds, while at larger length scales, it emerges from nanoscale spatial segregation. To address this enigmatic relationship, our study aims to investigate the structural landscape of DES across a wide range of length scales using neutron diffraction. This research seeks to provide insights that bridge the gap in our understanding of the intricate interplay between structural & dynamical heterogeneity and SEB.
DOI: 10.5286/isis.e.rb2410391-1
title: Probing Structural Origins of Heterogeneity in Deep Eutectic Solvents

description: Alkylamide-based deep eutectic solvents (DES) represent a novel class of solvents that have recently garnered significant attention for their versatile applications in various industrial processes. Despite their remarkable characteristics, the structural organization of these DES and its ramifications on the transport properties remains a puzzle. Recent observations have revealed a significantly non-linear and scale-dependent relationship between the Stokes-Einstein Breakdown (SEB) and dynamical heterogeneity, likely stemming from scale-dependent spatial heterogeneity. At the molecular scale, this heterogeneity is suggested to be linked with the creation of complexes and hydrogen bonds, while at larger length scales, it emerges from nanoscale spatial segregation. To address this enigmatic relationship, our study aims to investigate the structural landscape of DES across a wide range of length scales using neutron diffraction. This research seeks to provide insights that bridge the gap in our understanding of the intricate interplay between structural & dynamical heterogeneity and SEB.
DOI: 10.3535/9gm-sy6-ttl
title: Valerianella Mill.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/st9-rhx-jdb
title: Salix repens L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410092
title: Understanding the response of BiVO4 to pressure

description: Bismuth vanadate (BiVO4) has been identified as a promising photocatalyst to produce hydrogen by water splitting and for the conversion of CO2 to hydrocarbons. Both BiVO4 and LaNbO4 undergo a temperature dependent transition from the monoclinic fergusonite structure (I2/a) to the tetragonal scheelite (I41/a) structure at approximately the same temperature, but whereas the monoclinic distortion in LaNbO4 is reported to increase with pressure, BaVO4 is a rare example of an oxide that shows an increase in symmetry upon application of pressure. Variable pressure neutron diffraction data will be measured for BiVO4 and LaNbO4 to test the postulate that the transition from long range ordering of the Bi 6s2 lone pair electrons in the monoclinic structure to disordered in the tetragonal structure of BiVO4 reduces the compressibility of the BiO8 polyhedra resulting in the unusual properties of this material. Neutron PDF measurements have revealed local distortions of the BiO8 polyhedra that are incompatible with the long-range tetragonal symmetry, the role of such local distortions on the compressibility will be established.
DOI: 10.5286/isis.e.rb2410092-1
title: Understanding the response of BiVO4 to pressure

description: Bismuth vanadate (BiVO4) has been identified as a promising photocatalyst to produce hydrogen by water splitting and for the conversion of CO2 to hydrocarbons. Both BiVO4 and LaNbO4 undergo a temperature dependent transition from the monoclinic fergusonite structure (I2/a) to the tetragonal scheelite (I41/a) structure at approximately the same temperature, but whereas the monoclinic distortion in LaNbO4 is reported to increase with pressure, BaVO4 is a rare example of an oxide that shows an increase in symmetry upon application of pressure. Variable pressure neutron diffraction data will be measured for BiVO4 and LaNbO4 to test the postulate that the transition from long range ordering of the Bi 6s2 lone pair electrons in the monoclinic structure to disordered in the tetragonal structure of BiVO4 reduces the compressibility of the BiO8 polyhedra resulting in the unusual properties of this material. Neutron PDF measurements have revealed local distortions of the BiO8 polyhedra that are incompatible with the long-range tetragonal symmetry, the role of such local distortions on the compressibility will be established.
DOI: 10.5286/isis.e.rb2410097-1
title: Magnon dispersion in bulk FeOCl

description: We propose to use the MERLIN spectrometer to measure the magnon dispersion in bulk FeOCl, a van der Waals layered antiferromagnet with a cycloid magnetic ground state and a propagation vector [0.5, 0.5, 0.275]. We have performed magneto-Raman scattering experiments at T=5K that clearly show two \Gamma-point magnon excitations at 6.2 and 9.3 meV. With neutron scattering, we would like to access the whole Brillouin zone to characterize the magnetic Hamiltonian and to quantify the exchange parameters and anisotropy.
DOI: 10.3535/3lx-bc3-75c
title: Euphorbia paralias L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/qsq-cbk-14t
title: Anthyllis vulneraria L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410097
title: Magnon dispersion in bulk FeOCl

description: We propose to use the MERLIN spectrometer to measure the magnon dispersion in bulk FeOCl, a van der Waals layered antiferromagnet with a cycloid magnetic ground state and a propagation vector [0.5, 0.5, 0.275]. We have performed magneto-Raman scattering experiments at T=5K that clearly show two \Gamma-point magnon excitations at 6.2 and 9.3 meV. With neutron scattering, we would like to access the whole Brillouin zone to characterize the magnetic Hamiltonian and to quantify the exchange parameters and anisotropy.
DOI: 10.5286/isis.e.rb2410515
title: Multi-Resolution Investigation of Diffusion Crossover in Glass-Formers

description: The dispersion of relaxation time with momentum-transfer exhibits a universal crossover in glass-formers, which is reckoned as a transition from non-Gaussian to Gaussian subdiffusion (non-Fickian). We have characterized this crossover in deep eutectic solvents (DESs) using quasielastic neutron scattering (QENS) experiments at IRIS spectrometer. However, in systems exhibiting heterogeneous dynamics, observed behaviour is expected to be dependent on instrumental resolution. Further, molecular glass-formers such as DESs are expected to exhibit an additional crossover at low momentum-transfers (inaccessible to IRIS) attributed to transition from non-Fickian to Fickian diffusion. We aim to use LET to acquire additional information across various timescales (utilizing RRM) and access lower Q values (&lt; 0.5 Å⁻¹) while maintaining the energy resolution of IRIS.
DOI: 10.5286/isis.e.rb2410515-1
title: Multi-Resolution Investigation of Diffusion Crossover in Glass-Formers

description: The dispersion of relaxation time with momentum-transfer exhibits a universal crossover in glass-formers, which is reckoned as a transition from non-Gaussian to Gaussian subdiffusion (non-Fickian). We have characterized this crossover in deep eutectic solvents (DESs) using quasielastic neutron scattering (QENS) experiments at IRIS spectrometer. However, in systems exhibiting heterogeneous dynamics, observed behaviour is expected to be dependent on instrumental resolution. Further, molecular glass-formers such as DESs are expected to exhibit an additional crossover at low momentum-transfers (inaccessible to IRIS) attributed to transition from non-Fickian to Fickian diffusion. We aim to use LET to acquire additional information across various timescales (utilizing RRM) and access lower Q values (&lt; 0.5 Å⁻¹) while maintaining the energy resolution of IRIS.
DOI: 10.21233/n37f6z
title: Sand pollen surface sample dataset

description: Raw data for the Sand pollen surface sample dataset submitted to the Neotoma Paleoecology Database. Data is available through the landing page in JSON format. The landing page referenced by the DOI also contains links to publications and a map-based viewer for the dataset. The Neotoma Paleoecology Database maintains a homepage at https://www.neotomadb.org.
DOI: 10.34816/ifao.archives.232754
title: SAQQARA_nb_1994_03248

description: Référence : nb_1994_03248<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/j67-my8-zqz
title: Carex arenaria L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/wd8-kgy-17f
title: Thinopyrum junceum (L.) Á.Löve

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2320117
title: Applied potential-induced structural changes in extracted thylakoid membranes

description: This proposal follows on from a successful neutron reflectometry experiment in which we were able to form and characterise simple model bilayers based on photosynthetic thylakoid membranes found inside cyanobacteria and plant cells. Here, we wish to compare these results with actual extracted thylakoid membranes (TMs) both to assess the viability of the model system and to determine any structural changes as the TMs deposited onto electrode surfaces are subjected to applied potentials and/or external actinic light illumination using our bespoke spectroelectrochemical cell. This will be fundamental in allowing us to better understand how the TM-based biohybrid devices we have developed function and can be modified for improved output.
DOI: 10.5286/isis.e.rb2320117-1
title: Applied potential-induced structural changes in extracted thylakoid membranes

description: This proposal follows on from a successful neutron reflectometry experiment in which we were able to form and characterise simple model bilayers based on photosynthetic thylakoid membranes found inside cyanobacteria and plant cells. Here, we wish to compare these results with actual extracted thylakoid membranes (TMs) both to assess the viability of the model system and to determine any structural changes as the TMs deposited onto electrode surfaces are subjected to applied potentials and/or external actinic light illumination using our bespoke spectroelectrochemical cell. This will be fundamental in allowing us to better understand how the TM-based biohybrid devices we have developed function and can be modified for improved output.