cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2310421-1
title: In-situ DSC testing analysing hydrolysis dependent lactose glass transitions

description: Dynamic scanning calorimetry (DSC) is a powerful tool for the analysis of phase transitions and could be a valuable in-situ addition to neutron scattering experiments. An in-situ sample stick has been developed for use on IRIS to allow for DSC measurements to be taken during QENS scans. By running both measurements simultaneously, an accurate determination of phase transition temperature can be made for identical samples during DSC and QENS, whilst temperature adjustments can be made for a QENS scan depending on findings during the in-situ DSC scan. During the commissioning of the in-situ calorimeter, the testing of lactose samples at three varying stages of hydrolysis has been proposed. Lactose is disaccharide that often exists as an amorphous, hygroscopic glass. Upon hydrolysis, lactose undergoes plasticization and produces glucose and galactose. This causes the glass transition temperature, T¬G, to decrease, which impacts the storage of the sugar. The aim of the experiment is to observe any dynamic changes that are associated with the hydrolysis dependent change in TG by running the in-situ DSC simultaneously with QENS measurements. Such observations would provide further insight into the effects of water adsorption on lactose molecules and the change in TG that accompanies this hydrolysis.
DOI: 10.5286/isis.e.rb2510299
title: Probing multiple spin state transitions in the triangular-lattice antiferromagnet Na2SrCo(PO4)2
DOI: 10.5286/isis.e.rb2510299-1
title: Probing multiple spin state transitions in the triangular-lattice antiferromagnet Na2SrCo(PO4)2
DOI: 10.3535/tmj-m0c-53p
title: Daucus carota L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310421
title: In-situ DSC testing analysing hydrolysis dependent lactose glass transitions

description: Dynamic scanning calorimetry (DSC) is a powerful tool for the analysis of phase transitions and could be a valuable in-situ addition to neutron scattering experiments. An in-situ sample stick has been developed for use on IRIS to allow for DSC measurements to be taken during QENS scans. By running both measurements simultaneously, an accurate determination of phase transition temperature can be made for identical samples during DSC and QENS, whilst temperature adjustments can be made for a QENS scan depending on findings during the in-situ DSC scan. During the commissioning of the in-situ calorimeter, the testing of lactose samples at three varying stages of hydrolysis has been proposed. Lactose is disaccharide that often exists as an amorphous, hygroscopic glass. Upon hydrolysis, lactose undergoes plasticization and produces glucose and galactose. This causes the glass transition temperature, T¬G, to decrease, which impacts the storage of the sugar. The aim of the experiment is to observe any dynamic changes that are associated with the hydrolysis dependent change in TG by running the in-situ DSC simultaneously with QENS measurements. Such observations would provide further insight into the effects of water adsorption on lactose molecules and the change in TG that accompanies this hydrolysis.
DOI: 10.5286/isis.e.rb2510469
title: Direct experimental observation of the layered structure of ferroelectric and antiferroelectric smectic liquid crystals by neutron reflectometry

description: Longitudinally polar liquid crystals posses 3D orientational order coupled with unidirectional electric polarity, yielding fluid-like ferroelectrics with spontaneous polarizations comparable to solid state ferroelectrics. In the past year, multiple new polar lamellar phases have been discovered showing ferroelectric, anti-ferroelectric and more complex polar ordering. Despite research being in its infancy, possible applications for these fascinating new states of matter are already being suggested including non-linear optical devices, entangled photon generation and photo variable capacitors. As of yet, the specific structure of these phases is not particularly well understood prohibiting device optimisation for any application. Neutron reflectometry would allow the layered structure of these material to be probed directly, studying the polar orientation of the molecules, yielding a greater understanding of this new class of soft materials.
DOI: 10.5286/isis.e.rb2510469-1
title: Direct experimental observation of the layered structure of ferroelectric and antiferroelectric smectic liquid crystals by neutron reflectometry

description: Longitudinally polar liquid crystals posses 3D orientational order coupled with unidirectional electric polarity, yielding fluid-like ferroelectrics with spontaneous polarizations comparable to solid state ferroelectrics. In the past year, multiple new polar lamellar phases have been discovered showing ferroelectric, anti-ferroelectric and more complex polar ordering. Despite research being in its infancy, possible applications for these fascinating new states of matter are already being suggested including non-linear optical devices, entangled photon generation and photo variable capacitors. As of yet, the specific structure of these phases is not particularly well understood prohibiting device optimisation for any application. Neutron reflectometry would allow the layered structure of these material to be probed directly, studying the polar orientation of the molecules, yielding a greater understanding of this new class of soft materials.
DOI: 10.34816/ifao.archives.232998
title: SAQQARA_nb_1994_06070

description: Référence : nb_1994_06070<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/ba6-tl6-3z8
title: Solanum nigrum L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/d6y-kv7-0dc
title: Symphytum officinale L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310344-1
title: Hydride-ion dynamics in a Barium Indate−Zirconate Perovskite Oxyhydride
DOI: 10.5286/isis.e.rb2510161
title: Half-metallic ferromagnets prepared by topochemical insertion of lithium into W-based cation-deficient perovskite oxides

description: Spin-polarised conducting materials are an essential part of any future spintronic device. Currently there are very few, if any materials which fulfil this role. We have been investigating the preparation of Half-Metallic Ferromagnetic Materials (HMFM) which exhibit spin-polarised conductivity, via the lithiation of cation-deficient A4MW2O12 (A = La, Sr, Ba; M = Fe, Mn) perovskite phases. Magnetisation data indicate the lithiation of these materials can induce ‘ferromagnetic’ behaviour – a necessary prerequisite for HMFM behaviour – and measurements are underway to investigate the electronic transport behaviour of these materials. We propose to collect neutron powder diffraction data from these materials to investigate their crystal structures, especially a subtle cation disordering that appears to occur on lithium insertion. We also wish to collect diffraction data to determine their ordered magnetic structures to determine if they are ferromagnetic or ferrimagnetic – an important distinction with respect to HMFM behaviour.
DOI: 10.5286/isis.e.rb2510161-1
title: Half-metallic ferromagnets prepared by topochemical insertion of lithium into W-based cation-deficient perovskite oxides

description: Spin-polarised conducting materials are an essential part of any future spintronic device. Currently there are very few, if any materials which fulfil this role. We have been investigating the preparation of Half-Metallic Ferromagnetic Materials (HMFM) which exhibit spin-polarised conductivity, via the lithiation of cation-deficient A4MW2O12 (A = La, Sr, Ba; M = Fe, Mn) perovskite phases. Magnetisation data indicate the lithiation of these materials can induce ‘ferromagnetic’ behaviour – a necessary prerequisite for HMFM behaviour – and measurements are underway to investigate the electronic transport behaviour of these materials. We propose to collect neutron powder diffraction data from these materials to investigate their crystal structures, especially a subtle cation disordering that appears to occur on lithium insertion. We also wish to collect diffraction data to determine their ordered magnetic structures to determine if they are ferromagnetic or ferrimagnetic – an important distinction with respect to HMFM behaviour.
DOI: 10.3535/fjs-yjb-jx9
title: Falcaria vulgaris Bernh.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/k7a-lsp-g6e
title: Vicia sepium L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310344
title: Hydride-ion dynamics in a Barium Indate−Zirconate Perovskite Oxyhydride
DOI: 10.5286/isis.e.rb2510309
title: Investigation of superconducting gap structure and multi-vortex phase crossover in PbMo6S8 and PbMo6Se8
DOI: 10.5286/isis.e.rb2510309-1
title: Investigation of superconducting gap structure and multi-vortex phase crossover in PbMo6S8 and PbMo6Se8
DOI: 10.34816/ifao.archives.232999
title: SAQQARA_nb_1994_06071

description: Référence : nb_1994_06071<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.34847/nkl.fbbe92lo
title: test
DOI: 10.3535/0px-pce-lwn
title: Bromus japonicus subsp. japonicus

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/41s-zwh-rfq
title: Rhamnus cathartica L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2490316-1
title: Probing CEF excitations in a quantum spin liquid candidate: Yb2Te5O13
DOI: 10.5286/isis.e.rb2510699
title: Order from Disorder: A combined SANS and in silico approach to disentangling disordered regions and charge interaction in blood clot formation.
DOI: 10.5286/isis.e.rb2510699-1
title: Order from Disorder: A combined SANS and in silico approach to disentangling disordered regions and charge interaction in blood clot formation.
DOI: 10.3535/2dt-6pf-1p1
title: Phytolacca acinosa var. esculenta (Van Houtte) Maxim.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510181
title: A Total Scattering Study of Ionic Liquid Mixtures
DOI: 10.5286/isis.e.rb2510181-1
title: A Total Scattering Study of Ionic Liquid Mixtures
DOI: 10.5286/isis.e.rb2510213-1
title: Factors Determining Magnetic Homogeneity of CrTe2 Thin Films
DOI: 10.34816/ifao.archives.233000
title: SAQQARA_nb_1994_06072

description: Référence : nb_1994_06072<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/2j4-0s1-hm1
title: Phytolacca acinosa var. esculenta (Van Houtte) Maxim.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/hht-685-8rg
title: Castanea sativa Mill.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510213
title: Factors Determining Magnetic Homogeneity of CrTe2 Thin Films
DOI: 10.5286/isis.e.rb2510657
title: Engineering the Protein Corona: Characterisation of LNP-BSA Complexes for Enhanced Drug Delivery and Therapeutic Efficacy

description: Following their success as mRNA vaccine carriers during the COVID-19 pandemic, lipid nanoparticles (LNPs) have gained recognition as promising drug delivery systems. However, challenges persist, particularly due to the formation of a protein corona (PC) when LNPs are exposed to serum proteins, which can alter their biodistribution and therapeutic outcomes. Proteins such as bovine serum albumin (BSA) have demonstrated synergistic effects in enhancing LNP delivery, but the interaction between LNPs and serum proteins is complex, influenced by individual genetic and environmental factors. Thus, this proposal aims to use SANS to investigate the interaction between LNPs and BSA and explore the feasibility of engineering the PC by covalently pre-coating LNPs with BSA to form stable and standardised LNP-PC complexes. Using an LNP-protein separation method developed during our previous beamtime, we can remove unabsorbed proteins and obtain clear scattering data. This structural information will be integrated into our multi-scale LNP characterisation pipeline, offering a comprehensive model of LNP-BSA complexes, including correlations with physiological properties, composition, nanostructure and physiological behaviours. Ultimately, this study will provide new insights into LNP-protein interactions and present a novel method to control LNP-PC formation, which could lead to more robust and predictable therapeutic outcomes and support advancements in personalised medicine.
DOI: 10.5286/isis.e.rb2510657-1
title: Engineering the Protein Corona: Characterisation of LNP-BSA Complexes for Enhanced Drug Delivery and Therapeutic Efficacy

description: Following their success as mRNA vaccine carriers during the COVID-19 pandemic, lipid nanoparticles (LNPs) have gained recognition as promising drug delivery systems. However, challenges persist, particularly due to the formation of a protein corona (PC) when LNPs are exposed to serum proteins, which can alter their biodistribution and therapeutic outcomes. Proteins such as bovine serum albumin (BSA) have demonstrated synergistic effects in enhancing LNP delivery, but the interaction between LNPs and serum proteins is complex, influenced by individual genetic and environmental factors. Thus, this proposal aims to use SANS to investigate the interaction between LNPs and BSA and explore the feasibility of engineering the PC by covalently pre-coating LNPs with BSA to form stable and standardised LNP-PC complexes. Using an LNP-protein separation method developed during our previous beamtime, we can remove unabsorbed proteins and obtain clear scattering data. This structural information will be integrated into our multi-scale LNP characterisation pipeline, offering a comprehensive model of LNP-BSA complexes, including correlations with physiological properties, composition, nanostructure and physiological behaviours. Ultimately, this study will provide new insights into LNP-protein interactions and present a novel method to control LNP-PC formation, which could lead to more robust and predictable therapeutic outcomes and support advancements in personalised medicine.
DOI: 10.21233/n3qb81
title: Sarcpa Lake pollen surface sample dataset

description: Raw data for the Sarcpa Lake 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: 10.3535/cpj-lqd-x6b
title: Homogyne alpina (L.) Cass.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/jrb-c6k-0a5
title: Crataegus monogyna Jacq.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510458
title: High-energy spin excitations in a bilayer nickelate high-Tc superconductor

description: Very recently, the Ruddlesden-Popper bilayer perovskite La3Ni2O7 has been found to be superconducting under pressure with a Tc of about 80 K [2], representing an exciting advance in finding new unconventional superconductors family. Unlike cuprates and “infinite layer” nickelates, the La3Ni2O7 hosts a bilayer NiO2 square structure with active and orbitals [2,3], with filling fractions and respectively.
Given the presence of AFM interlayer interaction and the half-filling of orbitals, it is anticipated that electrons from different layers will form rung singlets at every site, giving rise to a nearly Mott-localized phase. Importantly, if this scenario is indeed correct, such singlet couplings should manifest even under ambient pressure, as the pressure required to induce superconductivity is relatively modest.
Consequently, we propose a comprehensive study aimed at measuring the high-energy spin excitations of La3Ni2O7, with the objective of detecting potential excitations arising from the formation of spin singlets by electrons. Furthermore, examining the mid-energy spin excitations and determining its in-plane exchange magnetic interactions in single crystal samples will elucidate inconsistencies observed in powder samples measured by neutron and resonant x-ray scattering.
DOI: 10.5286/isis.e.rb2510458-1
title: High-energy spin excitations in a bilayer nickelate high-Tc superconductor

description: Very recently, the Ruddlesden-Popper bilayer perovskite La3Ni2O7 has been found to be superconducting under pressure with a Tc of about 80 K [2], representing an exciting advance in finding new unconventional superconductors family. Unlike cuprates and “infinite layer” nickelates, the La3Ni2O7 hosts a bilayer NiO2 square structure with active and orbitals [2,3], with filling fractions and respectively.
Given the presence of AFM interlayer interaction and the half-filling of orbitals, it is anticipated that electrons from different layers will form rung singlets at every site, giving rise to a nearly Mott-localized phase. Importantly, if this scenario is indeed correct, such singlet couplings should manifest even under ambient pressure, as the pressure required to induce superconductivity is relatively modest.
Consequently, we propose a comprehensive study aimed at measuring the high-energy spin excitations of La3Ni2O7, with the objective of detecting potential excitations arising from the formation of spin singlets by electrons. Furthermore, examining the mid-energy spin excitations and determining its in-plane exchange magnetic interactions in single crystal samples will elucidate inconsistencies observed in powder samples measured by neutron and resonant x-ray scattering.
DOI: 10.5286/isis.e.rb2510491-1
title: Relationship between oxygen stoichiometry and energy of CEF levels in Pr2NiO4+𝛿

description: Since the discovery of high-temperature superconductivity in La2CuO4+, the impact of oxygen nonstoichiometry on the structure and physical properties of layered oxide compounds was under analysis. Among these, RE2NiO4+ (Re = Pr, La, Nd), with their K2NiF4-type structure have been studied for their structural similarity to the superconducting phase. We are presently conducting a detailed study of Pr2NiO4+δ (δ = 0.25) single crystals, through the analysis of inelastic neutron scattering measurements. CEF calculations point out a complete different energy scheme for the Pr3+ with 10 oxygen environment (excess oxygen) with one very low lying level (presently asked for at ILL @IN5) and one very high energetic level (~100 meV) for which we would need MARI. Our CEF calculations also revealed a strong link between the position of the first energy transition peak and the Pr-Oap atomic distances (and ultimately oxygen stoichiometry), since we observed an exponential correlation between the Pr-Oap distances and the crystal electric field (CEF) energy levels. However, the analysis is restricted so far to the first transition due to the lack of CEF data at higher energies. Accessing this range will help us shedding light on a more general ground on the effect of excess oxygen on the full CEF energy levels of these systems.
DOI: 10.34816/ifao.archives.233001
title: SAQQARA_nb_1994_06073

description: Référence : nb_1994_06073<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/k3r-d3d-n6t
title: Petrorhagia saxifraga subsp. saxifraga

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510145
title: Unveiling the internal architecture of Au-Doped CeO2-Quantum Dots Superlattices

description: Enhancing the fluorescence of colloidal quantum dots (QDs) is a crucial challenge for applications in fields such as bioimaging and disease diagnosis. Building on our previous success in creating a 3D superlattice of cerium oxide quantum dots (CeO2-QDs) that significantly amplified their fluorescence, we propose a novel approach: doping this 3D superlattice with gold nanocrystals (Au-NCs). This innovative strategy aims to further enhance the optical properties by introducing new electronic, magnetic, and luminescent characteristics.
To investigate the internal structure and the precise distribution of Au-NCs within the CeO2-QDs superlattice, we propose a small-angle neutron scattering (SANS) study utilizing contrast variation techniques. This will allow us to probe key structural features, including the ligand shell thickness and its influence on superlattice ordering, which is critical for determining the optical behavior of the quantum dots.
Preliminary small-angle X-ray scattering (SAXS) data have shown that Au doping does not disrupt superlattice formation and enhances fluorescence. Our SANS study will provide a more detailed understanding of the spatial arrangement of Au-NCs and their impact on the quantum dot superlattice structure. These findings will pave the way for advanced applications of quantum dots in nanophotonics, catalysis, and beyond.
DOI: 10.5286/isis.e.rb2510145-1
title: Unveiling the internal architecture of Au-Doped CeO2-Quantum Dots Superlattices

description: Enhancing the fluorescence of colloidal quantum dots (QDs) is a crucial challenge for applications in fields such as bioimaging and disease diagnosis. Building on our previous success in creating a 3D superlattice of cerium oxide quantum dots (CeO2-QDs) that significantly amplified their fluorescence, we propose a novel approach: doping this 3D superlattice with gold nanocrystals (Au-NCs). This innovative strategy aims to further enhance the optical properties by introducing new electronic, magnetic, and luminescent characteristics.
To investigate the internal structure and the precise distribution of Au-NCs within the CeO2-QDs superlattice, we propose a small-angle neutron scattering (SANS) study utilizing contrast variation techniques. This will allow us to probe key structural features, including the ligand shell thickness and its influence on superlattice ordering, which is critical for determining the optical behavior of the quantum dots.
Preliminary small-angle X-ray scattering (SAXS) data have shown that Au doping does not disrupt superlattice formation and enhances fluorescence. Our SANS study will provide a more detailed understanding of the spatial arrangement of Au-NCs and their impact on the quantum dot superlattice structure. These findings will pave the way for advanced applications of quantum dots in nanophotonics, catalysis, and beyond.