cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2320058
title: Exploration of Phase Transition Behaviours and Magnetic Structures in Some Polar Sulphides Containing Diatomic Anions

description: Ferroelectric materials are utilized in a wide variety of technical applications, such as non-volatile memory devices and capacitors. These materials are required to adopt non-centrosymmetric and polar crystal structures to give net electric polarization. The conventional approach to stabilise ferroelectric structures relies on second-order Jahn-Teller (SOJT) active cations. However, there only exist a limited number of SOJT cations, and their diamagnetic nature means they by themselves do not allow long-range magnetic order as well as the multiferroic behaviour, an important property towards low-energy memory storage device. In this regard, searching for new inversion-symmetry breaking mechanism is necessary. We recently prepard two quasi-low-dimensional sulphides containing diatomic SH anion. Both materials adopt polar crystal structures and one compound contains paramagnetic transition metals. The absence of any SOJT cation in these materials implies their polar symmetries must come from a different origin, and understanding the underlying mechanism is crucial to help further develop new ferroelectric/multiferroic materials.
DOI: 10.5286/isis.e.rb2320058-1
title: Exploration of Phase Transition Behaviours and Magnetic Structures in Some Polar Sulphides Containing Diatomic Anions

description: Ferroelectric materials are utilized in a wide variety of technical applications, such as non-volatile memory devices and capacitors. These materials are required to adopt non-centrosymmetric and polar crystal structures to give net electric polarization. The conventional approach to stabilise ferroelectric structures relies on second-order Jahn-Teller (SOJT) active cations. However, there only exist a limited number of SOJT cations, and their diamagnetic nature means they by themselves do not allow long-range magnetic order as well as the multiferroic behaviour, an important property towards low-energy memory storage device. In this regard, searching for new inversion-symmetry breaking mechanism is necessary. We recently prepard two quasi-low-dimensional sulphides containing diatomic SH anion. Both materials adopt polar crystal structures and one compound contains paramagnetic transition metals. The absence of any SOJT cation in these materials implies their polar symmetries must come from a different origin, and understanding the underlying mechanism is crucial to help further develop new ferroelectric/multiferroic materials.
DOI: 10.3535/ywz-f5l-8y3
title: Anacamptis coriophora (L.) R.M.Bateman, Pridgeon & M.W.Chase

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2320008
title: Struture in temperature-insensitive microemulsions

description: The extreme temperature (T) and pressure (P) conditions found in modern internal combustion engines (ICEs) complicate studies of surfactants and additives in lubrication oils, since accessing these conditions is experimentally challenging. As widely reported in literature (1-7), surfactant systems form stable microemulsions that can be de-stabilised by changing factors, such as T, P, composition, or salinity. Previous research shows that by mixing non-ionic and anionic surfactants it is possible to reduce the T-sensitivity of microemulsions (8-11). The goal is to expand T-sensitivity studies as a means of overcoming the effects of T and P for reversed micelle (RM) and microemulsion (ME) systems, particularly for the harsh conditions found in ICEs. The results will improve understanding about surfactant synergism at oil-water interfaces, and also provide input data for Molecular Dynamics (MD) simulations in collaboration with Prof P. Camp (Edinburgh). Ilona Serafin is a final year PhD student, fully funded by Infineum
DOI: 10.5286/isis.e.rb2390162-1
title: PDOS thermoelectric materials
DOI: 10.3535/950-cnm-vq8
title: Orchis militaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/sg4-q1d-va1
title: Astelia Banks & Sol. ex R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220074
title: Operando study of a thermodynamically-reversible chemical looping memory reactor
DOI: 10.5286/isis.e.rb2220074-1
title: Operando study of a thermodynamically-reversible chemical looping memory reactor
DOI: 10.5286/isis.e.rb2390162
title: PDOS thermoelectric materials
DOI: 10.3535/ctp-n2c-06g
title: Hammarbya paludosa (L.) Kuntze

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/kca-n0m-pac
title: Orchis militaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2320155
title: Harnessing Light-Responsive Structural Control in Lyotropic Liquid Crystals

description: Materials that change their nanoscale structure in response to external stimuli are of interest as smart materials for a wide range of applications, including targeted drug or catalyst release, soft bio-robotics and energy-storage systems. We have recently demonstrated the first example of light-responsive cubic lyotropic liquid crystal (LLC) lipid dispersions, or cubosomes, in which photoswitchable azobenzene photosurfactants (AzoPS) were used to enable external control over the LLC structure and subsequent on-demand release of entrapped guest molecules. Upon irradiation with light, the AzoPS within the cubosomes undergo trans-cis photoisomerization, which in turn leads to squeezing of the cubic lattice and release of entrapped cargo. However, the mechanism for photoisomerisation of azobenzene, especially in condensed, self-assembled states, and the knock-on effect this has on the long-range structural order, are still poorly understood. This knowledge is essential to inform the targeted, bottom-up design of next-generation systems where the light-response is harnessed for optimal control. The aim of this study is to use selective deuteration in small-angle neutron scattering (SANS) to understand where the photosurfactant resides in mixed LLC structures of different symmetries. We will use this to explore how photoisomerisation affects the long-range structural order.
DOI: 10.5286/isis.e.rb2320155-1
title: Harnessing Light-Responsive Structural Control in Lyotropic Liquid Crystals

description: Materials that change their nanoscale structure in response to external stimuli are of interest as smart materials for a wide range of applications, including targeted drug or catalyst release, soft bio-robotics and energy-storage systems. We have recently demonstrated the first example of light-responsive cubic lyotropic liquid crystal (LLC) lipid dispersions, or cubosomes, in which photoswitchable azobenzene photosurfactants (AzoPS) were used to enable external control over the LLC structure and subsequent on-demand release of entrapped guest molecules. Upon irradiation with light, the AzoPS within the cubosomes undergo trans-cis photoisomerization, which in turn leads to squeezing of the cubic lattice and release of entrapped cargo. However, the mechanism for photoisomerisation of azobenzene, especially in condensed, self-assembled states, and the knock-on effect this has on the long-range structural order, are still poorly understood. This knowledge is essential to inform the targeted, bottom-up design of next-generation systems where the light-response is harnessed for optimal control. The aim of this study is to use selective deuteration in small-angle neutron scattering (SANS) to understand where the photosurfactant resides in mixed LLC structures of different symmetries. We will use this to explore how photoisomerisation affects the long-range structural order.
DOI: 10.5286/isis.e.rb2390090-1
title: Oxygen stoichiometry in activated Ru doped Ce(0.8)Pr(0.2)O(2-d)
DOI: 10.3535/5lm-5es-xpb
title: Astelia Banks & Sol. ex R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310173
title: Crystalline-electric-field excitations of an Yb-based kagome lattice Kondo antiferromagnet

description: Materials where the magnetic ions form a kagome lattice often exhibit magnetic frustration, meaning that no ground state satisfies all the magnetic interactions, leading to novel electronic phases. The outcome when strong frustration is paired with strong hybridization effects (Kondo coupling) in Yb-based heavy fermion systems remains to be determined. Here we propose to perform inelastic neutron scattering on powder samples of the recently identified kagome lattice Kondo antiferromagnet YbPdAs using the MERLIN spectrometer, so as to probe the crystalline-electric-fields (CEF) excitations and determine the CEF level scheme and ground state 4f-wave function. This will provide important information about the magnetic anisotropy, enabling a microscopic understanding of the frustration, as well as the degree of Kondo hybridization.
DOI: 10.5286/isis.e.rb2310173-1
title: Crystalline-electric-field excitations of an Yb-based kagome lattice Kondo antiferromagnet

description: Materials where the magnetic ions form a kagome lattice often exhibit magnetic frustration, meaning that no ground state satisfies all the magnetic interactions, leading to novel electronic phases. The outcome when strong frustration is paired with strong hybridization effects (Kondo coupling) in Yb-based heavy fermion systems remains to be determined. Here we propose to perform inelastic neutron scattering on powder samples of the recently identified kagome lattice Kondo antiferromagnet YbPdAs using the MERLIN spectrometer, so as to probe the crystalline-electric-fields (CEF) excitations and determine the CEF level scheme and ground state 4f-wave function. This will provide important information about the magnetic anisotropy, enabling a microscopic understanding of the frustration, as well as the degree of Kondo hybridization.
DOI: 10.5286/isis.e.rb2320042-1
title: How Does Hydrophobicity Change of Nonionic Surfactant Influence the Co-adsorption of Monoclonal Antibody and Surfactant at the Amphiphilic Self-assembled Interface?

description: We have previously found that nonionic surfactants, such as Polysorbate 80 (commonly denoted as PS80 or Tween 80), could form a monolayer on amphiphilic UV-TMOS treated surface, greatly inhibiting mAb from further adsorption. We speculate that the hydrophilic heads of PS80, which are adsorbed on the outside of the UV-TMOS interface, prevent further adsorption of the mAbs. This aroused our interest to investigate whether the hydrophobicity of surfactants, especially headgroup size, would impact the co-adsorption of mAb and surfactant.
DOI: 10.34816/ifao.archives.232651
title: SAQQARA_pv_2004_00690

description: Référence : pv_2004_00690<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/rcw-tes-p7a
title: Delphinium peregrinum L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/s6e-el6-bfy
title: Orchis militaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220747-2
title: Distinguishability between ancient and modern leaded tin bronzes by the composition of their lead inclusions using neutron diffraction: prel
DOI: 10.5286/isis.e.rb2310681-1
title: Intermediate-range Environments of Boron and Germanium in Binary Borogermanate Glasses

description: In a previous study of the GeO2-rich binary borogermanate glasses, BO1.5-GeO2, we found that, by using first order difference methods, we can extract information on changes to the intermediate range structure. We now wish to examine the intermediate range boron and germanium environments for borogermanate glasses in the borate-rich region. This will improve our understanding of how different structural polyhedra and clusters are accommodated in a continuous network.
DOI: 10.5286/isis.e.rb2320042
title: How Does Hydrophobicity Change of Nonionic Surfactant Influence the Co-adsorption of Monoclonal Antibody and Surfactant at the Amphiphilic Self-assembled Interface?

description: We have previously found that nonionic surfactants, such as Polysorbate 80 (commonly denoted as PS80 or Tween 80), could form a monolayer on amphiphilic UV-TMOS treated surface, greatly inhibiting mAb from further adsorption. We speculate that the hydrophilic heads of PS80, which are adsorbed on the outside of the UV-TMOS interface, prevent further adsorption of the mAbs. This aroused our interest to investigate whether the hydrophobicity of surfactants, especially headgroup size, would impact the co-adsorption of mAb and surfactant.
DOI: 10.3535/dy4-04d-wak
title: Anacamptis coriophora (L.) R.M.Bateman, Pridgeon & M.W.Chase

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/gek-3lb-1yp
title: Astelia Banks & Sol. ex R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310681
title: Intermediate-range Environments of Boron and Germanium in Binary Borogermanate Glasses

description: In a previous study of the GeO2-rich binary borogermanate glasses, BO1.5-GeO2, we found that, by using first order difference methods, we can extract information on changes to the intermediate range structure. We now wish to examine the intermediate range boron and germanium environments for borogermanate glasses in the borate-rich region. This will improve our understanding of how different structural polyhedra and clusters are accommodated in a continuous network.
DOI: 10.5286/isis.e.rb2320136
title: Probing strain effects on an unusual skyrmion lattice

description: Solid state systems possessing non-trivial topological magnetic structures are of interest in the context of spintronic and memory applications as well as the fundamental study of quantum materials with a Berry phase. A fascinating example of such a system is the correlated oxide, SrFeO3, which is speculated to host a lattice of skyrmions (emergent magnetic monopoles). The skyrmions of SrFeO3 are expected to be small, meaning high density memories are feasible. Usually skyrmion lattices arise due to magnetic frustration or, more commonly, a non-centrosymmetric structure. SrFeO3 is centrosymmetric and has no frustration. The origin of the skyrmion lattice in SrFeO3 has not been proved experimentally but is theorised to stem from a modified double exchange with negative charge transfer. Out of this theory comes a predicted relationship between the helimagnetic angle, which can be determined by neutron scattering scattering, and features of the electronic structure. Epitaxial strain in thin films is an ideal control platform to test this relationship. Pinpointing the origin of this unique type of skyrmion lattice is the first step towards understanding how to manipulate it and eventually integrate these materials in new transformative technologies. We will analyse SrFeO3 under both compressive and tensile strain. As a complement and feasibility test, we will also study an exfoliated membrane of SrFeO3 with no native strain.
DOI: 10.5286/isis.e.rb2320136-1
title: Probing strain effects on an unusual skyrmion lattice

description: Solid state systems possessing non-trivial topological magnetic structures are of interest in the context of spintronic and memory applications as well as the fundamental study of quantum materials with a Berry phase. A fascinating example of such a system is the correlated oxide, SrFeO3, which is speculated to host a lattice of skyrmions (emergent magnetic monopoles). The skyrmions of SrFeO3 are expected to be small, meaning high density memories are feasible. Usually skyrmion lattices arise due to magnetic frustration or, more commonly, a non-centrosymmetric structure. SrFeO3 is centrosymmetric and has no frustration. The origin of the skyrmion lattice in SrFeO3 has not been proved experimentally but is theorised to stem from a modified double exchange with negative charge transfer. Out of this theory comes a predicted relationship between the helimagnetic angle, which can be determined by neutron scattering scattering, and features of the electronic structure. Epitaxial strain in thin films is an ideal control platform to test this relationship. Pinpointing the origin of this unique type of skyrmion lattice is the first step towards understanding how to manipulate it and eventually integrate these materials in new transformative technologies. We will analyse SrFeO3 under both compressive and tensile strain. As a complement and feasibility test, we will also study an exfoliated membrane of SrFeO3 with no native strain.
DOI: 10.34816/ifao.archives.232652
title: SAQQARA_pv_2004_00691

description: Référence : pv_2004_00691<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/3bx-9e9-bd0
title: Orchis militaris L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/fpt-wkf-wvy
title: Astelia Banks & Sol. ex R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220613-2
title: Resolution of Attenuating Lithium Fronts in Sulphur based Solid-State Electrolytes
DOI: 10.5286/isis.e.rb2255022-1
title: Small-angle neutron scattering investigation of Cr precipitates in annealed CuCrZr alloy developed for fusion reactor technology
DOI: 10.3535/jpp-vma-8tb
title: Astelia Banks & Sol. ex R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/tzy-0k1-sq1
title: Astelia Banks & Sol. ex R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2255022
title: Small-angle neutron scattering investigation of Cr precipitates in annealed CuCrZr alloy developed for fusion reactor technology
DOI: 10.5286/isis.e.rb2390096-1
title: La1/3NbO3
DOI: 10.5286/isis.e.rb2390181-1
title: Spin wave measurement in a low dimensional PbCd2Ni6Te3O18 quasi-1D spin one chain compound
DOI: 10.3535/spr-821-9fa
title: Astelia Banks & Sol. ex R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2291048-1
title: Duplicate Of: Lanthanum Substitution on Inorganic Solid State Electrolytes for Li Batteries
DOI: 10.5286/isis.e.rb2291050-1
title: Duplicate Of: Lanthanum Substitution on Inorganic Solid State Electrolytes for Li Batteries
DOI: 10.5286/isis.e.rb2390167-1
title: Host-guest interactions in a molecule intercalated iron-selenide
DOI: 10.34816/ifao.archives.232653
title: SAQQARA_pv_2004_00692

description: Référence : pv_2004_00692<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/mvw-y4q-jp0
title: Neotinea ustulata (L.) R.M.Bateman, Pridgeon & M.W.Chase

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/xd5-gg9-x5m
title: Anemone hortensis L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2291049-1
title: Duplicate Of: Lanthanum Substitution on Inorganic Solid State Electrolytes for Li Batteries
DOI: 10.5286/isis.e.rb2320219-1
title: Measurement of the polarized 3He neutron absorption cross section

description: A three-body force is a force that is not present in a system of two objects but manifests in a three-body system, that is to say the two body forces are insufficient to describe the system. For neutron-rich (exotic) nuclei the stability becomes increasing critical to the three-body nuclear (3N) forces. Also calculations of the deuteron-tritium fusion reaction, intensively studied for power generation, require 3N forces. Although models for the 3N forces exist and give a rough estimate of the relative sizes and spin dependence of three- and higher-body effects compared to two-nucleon forces, more precise experimental data on systems with few nucleons is needed to determine the relative strengths of these forces. To better constrain the spin-dependent parts of the 3N force, data are required on the spin-dependent scattering of three- and four-body systems with precision at the sub-percent level. We have been working to determine the n-3He incoherent scattering cross section in experiments at FRM2 and upcoming at SNS. These values however are dependent on the polarized 3He neutron absorption cross section, σp, which has only been weakly experimentally or theoretically bound, further knowledge of this cross section in itself adds to the experimental constraints on theory of three-body forces. In order to determine σp absolutely we propose to measure the transmission of a polarized 3He cell while performing a precision NMR measurement of absolute 3He polarization.
DOI: 10.5286/isis.e.rb2390134-1
title: Investigation into the cation arrangement of Pr-doped SrFeO3 for symmetrical SOFCs-SrFePr0.4
DOI: 10.3535/n49-d3x-zsf
title: Orchis variegata All.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/nqb-mcq-79s
title: Anemone coronaria L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220432
title: Measuring the Melt curve of 7LiD at High Pressures

description: Lithium Deuteride (LiD) has been studied at ambient temperatures at high pressure using both x-ray and neutron diffraction but to date there have been no experimental studies to confirm theoretical prediction of the high-pressure high temperature (HPHT) properties of LiD. We propose to investigate the high-pressure high temperature behaviour of commercially available 7LiD with neutron diffraction. We will observe structural changes approaching melting and measure data points on the melting curve. By looking at the structure approaching melting we will look for dissociation of the Li and H species or changes to the stoichiometry that would give rise to new structural phases. The evolution of the liquid structure under pressure will also be measured for the first time. All these measurements would add detail to the growing volume of theoretical work
DOI: 10.5286/isis.e.rb2220432-2
title: Measuring the Melt curve of 7LiD at High Pressures