cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2510653
title: Anionic surfactant adsorption on deep eutectic solvents

description: Deep Eutectic Solvents (DES) are molecular mixtures similar to ionic liquids, having melting points below room temperature. However instead of being a salt, the mixture contains two molecules with strong H-bonding that hinder formation of an ordered crystalline network. DES have low vapour pressure, adjustable polarity, and tunable components which make them interesting as green solvents while being far less toxic than typical ionic liquids. They are currently being extensively explored for extraction of active species from biomass and solubilisation of therapeutic agents for dermal delivery. These applications require formulation using DES in emulsions and gels, requiring surfactants to stabilise DES-oil or DES-water interfaces. While a few surfactants have been previously studied in DES, these have so far been restricted to model surfactants, and in the case of anionic surfactants this has been limited to species with sulphur containing headgroups. Here we wish to study the adsorption of anionic surfactants relevant to emulsification that have different headgroup chemistries, in adsorbed films at the air-DES interface to determine how they interact with DES and whether comparable interfacial structures are found to those formed on water.
DOI: 10.5286/isis.e.rb2510653-1
title: Anionic surfactant adsorption on deep eutectic solvents

description: Deep Eutectic Solvents (DES) are molecular mixtures similar to ionic liquids, having melting points below room temperature. However instead of being a salt, the mixture contains two molecules with strong H-bonding that hinder formation of an ordered crystalline network. DES have low vapour pressure, adjustable polarity, and tunable components which make them interesting as green solvents while being far less toxic than typical ionic liquids. They are currently being extensively explored for extraction of active species from biomass and solubilisation of therapeutic agents for dermal delivery. These applications require formulation using DES in emulsions and gels, requiring surfactants to stabilise DES-oil or DES-water interfaces. While a few surfactants have been previously studied in DES, these have so far been restricted to model surfactants, and in the case of anionic surfactants this has been limited to species with sulphur containing headgroups. Here we wish to study the adsorption of anionic surfactants relevant to emulsification that have different headgroup chemistries, in adsorbed films at the air-DES interface to determine how they interact with DES and whether comparable interfacial structures are found to those formed on water.
DOI: 10.3535/8ky-d7m-g4l
title: Carex arenaria L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/xdm-wkb-vbz
title: Prenanthes purpurea L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410067-1
title: Adsorption of ionic liquid additives for water-based lubrication

description: Water-based lubricants have the advantages of high thermal conductivity, good cooling performance and low pollution. However, they often suffer from poor dispersion and dissolution stability, low reactivity and high corrosiveness. Ionic liquids (ILs) can overcome some of these drawbacks. In addition, they have been developed as a new additive with good friction-reducing and anti-wear functions. It is widely hypothesized that the tribological properties of these ILs arise from the nanostructure of their adsorbed layer on the steel surface through self-assembly, but the exact structural details of the IL molecules remain elusive. It has also been hypothesized that these ILs could form a sandwiched bilayer on the metal surface with the hydrophobic tails packed in the middle and hydrophilic head groups pointed outside. However, how the nanostructures determine the tribological properties of these ILs remains inconclusive.
DOI: 10.5286/isis.e.rb2420448
title: Diffusion of hydrogen through potassium and sodium hydride intercalated graphite
DOI: 10.5286/isis.e.rb2420448-1
title: Diffusion of hydrogen through potassium and sodium hydride intercalated graphite
DOI: 10.34816/ifao.archives.233003
title: SAQQARA_nb_1994_06075

description: Référence : nb_1994_06075<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/hpm-4g6-14q
title: Carex panicea L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2410067
title: Adsorption of ionic liquid additives for water-based lubrication

description: Water-based lubricants have the advantages of high thermal conductivity, good cooling performance and low pollution. However, they often suffer from poor dispersion and dissolution stability, low reactivity and high corrosiveness. Ionic liquids (ILs) can overcome some of these drawbacks. In addition, they have been developed as a new additive with good friction-reducing and anti-wear functions. It is widely hypothesized that the tribological properties of these ILs arise from the nanostructure of their adsorbed layer on the steel surface through self-assembly, but the exact structural details of the IL molecules remain elusive. It has also been hypothesized that these ILs could form a sandwiched bilayer on the metal surface with the hydrophobic tails packed in the middle and hydrophilic head groups pointed outside. However, how the nanostructures determine the tribological properties of these ILs remains inconclusive.
DOI: 10.5286/isis.e.rb2510233
title: Radiobiological measurements with epithermal neutrons for Boron Neutron Capture Therapy treatment planning

description: Boron neutron capture therapy (BNCT) is an experimental form of radiotherapy based on the combined effect of the uptake of a 10B-containing compound and the irradiation with low-energy neutrons. This therapy is currently expanding widely by means of compact accelerator neutron sources that can be installed in hospitals. These new facilities will produce epithermal beams for the therapy. This energy range is required to allow neutrons to penetrate the body and reach the tumour once thermalized. The relative biological effectiveness (a key factor for treatment planning) of neutrons in this energy range is not well known, and it is currently extrapolated from thermal or fast neutrons. The measurements proposed in this project pursue obtaining radiobiological data for both tumour and normal cells using epithermal neutrons and compare to the results of studies using other neutron energy ranges at other facilities.
DOI: 10.5286/isis.e.rb2510233-2
title: Radiobiological measurements with epithermal neutrons for Boron Neutron Capture Therapy treatment planning

description: Boron neutron capture therapy (BNCT) is an experimental form of radiotherapy based on the combined effect of the uptake of a 10B-containing compound and the irradiation with low-energy neutrons. This therapy is currently expanding widely by means of compact accelerator neutron sources that can be installed in hospitals. These new facilities will produce epithermal beams for the therapy. This energy range is required to allow neutrons to penetrate the body and reach the tumour once thermalized. The relative biological effectiveness (a key factor for treatment planning) of neutrons in this energy range is not well known, and it is currently extrapolated from thermal or fast neutrons. The measurements proposed in this project pursue obtaining radiobiological data for both tumour and normal cells using epithermal neutrons and compare to the results of studies using other neutron energy ranges at other facilities.
DOI: 10.21233/n3kn4c
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: 10.3535/6ea-d20-gns
title: Glyceria maxima (Hartm.) Holmb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/krk-ks0-40r
title: Juncus conglomeratus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510099-2
title: Isotope Effects on Lithium Momentum at the Dynamic Transition Using eV Neutron Scattering

description: Solid state batteries (Li-SSBs) offer a potential route to address the poor range, slow charging, and safety issues associated with current Li-ion batteries in cars, by utilizing lithium metal anodes. One of the limitations of the solid electrolytes used in Li-SSBs is their comparatively poor ionic conductivities when compared to their liquid counterparts, due to a different restricted conduction mechanism. Understanding the fundamental nature of the conduction mechanism in solids is pivotal to designing suitable electrolytes with improved ion mobility. This proposal aims to elucidate the role of Li vibrational dynamics on Li-ion motion utilising different isotopic masses.
DOI: 10.5286/isis.e.rb2510403
title: Deciphering ferroelectric distortions of PbCuTe2O6 below 1 K

description: The investigation of frustrated magnetism with the search for materials realising the quantum spin liquid state is a current active science area. Another active research topic is the study of ferroelectricity in materials realising spontaneous electric polarisation. In this proposal, we aim to investigate the compound PbCuTe2O6 which combines both properties. While the frustrated magnetic interactions in this material lead to a suppression of long-range magnetic order, the ferroelectricity which onsets at low temperatures is accompanied by a structural distortion from cubic to non-cubic symmetry. Conventional neutron diffraction is unable to resolve the changes that occur at the transition indicating that the distortion is very subtle. For this reason, we propose to study changes in the neutron pair distribution function around the transition using the Polaris instrument. As well as providing information about the ferroelectric state these results would also give insights into whether the magnetic interactions are influenced by the transition.
DOI: 10.5286/isis.e.rb2510403-1
title: Deciphering ferroelectric distortions of PbCuTe2O6 below 1 K

description: The investigation of frustrated magnetism with the search for materials realising the quantum spin liquid state is a current active science area. Another active research topic is the study of ferroelectricity in materials realising spontaneous electric polarisation. In this proposal, we aim to investigate the compound PbCuTe2O6 which combines both properties. While the frustrated magnetic interactions in this material lead to a suppression of long-range magnetic order, the ferroelectricity which onsets at low temperatures is accompanied by a structural distortion from cubic to non-cubic symmetry. Conventional neutron diffraction is unable to resolve the changes that occur at the transition indicating that the distortion is very subtle. For this reason, we propose to study changes in the neutron pair distribution function around the transition using the Polaris instrument. As well as providing information about the ferroelectric state these results would also give insights into whether the magnetic interactions are influenced by the transition.
DOI: 10.34816/ifao.archives.233004
title: SAQQARA_nb_1994_06076

description: Référence : nb_1994_06076<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/bzj-dll-c0t
title: Carex alba Scop.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/xrm-k8d-gpj
title: Ovidia pillo-pillo (Gay) Hohen. ex Meisn.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510001
title: Magnetic structure of a new Kagome topological semimetal Ni3In2Se2

description: Kagome metals, with a frustrated sub-lattice, are ideal hosts for many exquisite quantum phenomena. Taking the kagome-metal Co3Sn2S2 for example,there is an interaction between topological state and spin waves, and the distribution and number of Weyl points are affected by its strong anisotropic magnetoelastic coupling effect and special magnetic structure. Therefore, the role of magnetic structure and magnetic excitations is crucial for the transport behaviors in topological materials. Recently, analogous Black Holes in type-III Dirac semimetal Ni3In2X2 (X= S, Se) is a new class of candidate materials for ideal topological semimetals, which are kesterite-type compounds, similar with the Co3Sn2S2 compound. So far there are no experimental reports on the magnetic ground state of Ni3In2Se2. Here we propose to do neutron diffraction experiments on Ni3In2Se2 to explore the magnetic structure and crystal structure in different temperature regions. Transport measurements indicate that Ni3In2Se2 has an antiferromagnetic order with Ni spins primarily aligned along the ab plane, another a weak ferromagnetism along the c axis probably exists.We apply 5 days of beamtime at the single crystal diffractometer SXD to complete this study.
DOI: 10.5286/isis.e.rb2510001-1
title: Magnetic structure of a new Kagome topological semimetal Ni3In2Se2

description: Kagome metals, with a frustrated sub-lattice, are ideal hosts for many exquisite quantum phenomena. Taking the kagome-metal Co3Sn2S2 for example,there is an interaction between topological state and spin waves, and the distribution and number of Weyl points are affected by its strong anisotropic magnetoelastic coupling effect and special magnetic structure. Therefore, the role of magnetic structure and magnetic excitations is crucial for the transport behaviors in topological materials. Recently, analogous Black Holes in type-III Dirac semimetal Ni3In2X2 (X= S, Se) is a new class of candidate materials for ideal topological semimetals, which are kesterite-type compounds, similar with the Co3Sn2S2 compound. So far there are no experimental reports on the magnetic ground state of Ni3In2Se2. Here we propose to do neutron diffraction experiments on Ni3In2Se2 to explore the magnetic structure and crystal structure in different temperature regions. Transport measurements indicate that Ni3In2Se2 has an antiferromagnetic order with Ni spins primarily aligned along the ab plane, another a weak ferromagnetism along the c axis probably exists.We apply 5 days of beamtime at the single crystal diffractometer SXD to complete this study.
DOI: 10.5286/isis.e.rb2510174-1
title: Catalytic Depolymerization of Bio-based PEF Using DES

description: In this project, we aim to explore a new method for recycling poly(ethylene 2,5-furandicarboxylate) (PEF), a promising bio-based plastic expected to enter global markets. Current recycling methods for PEF are limited, and environmental concerns regarding its accumulation make innovative solutions necessary. We will investigate how a specific chemical mixture (urea and zinc chloride, known as a deep eutectic solvent or DES) can break down PEF into its original components for reuse. By using neutron scattering techniques, we hope to understand the detailed molecular processes involved in this reaction, which could help design greener recycling strategies for sustainable plastics.
DOI: 10.3535/c88-r9n-2nk
title: Tepualia Griseb.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/zbg-tfq-7wm
title: Carex paniculata subsp. paniculata

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510174
title: Catalytic Depolymerization of Bio-based PEF Using DES

description: In this project, we aim to explore a new method for recycling poly(ethylene 2,5-furandicarboxylate) (PEF), a promising bio-based plastic expected to enter global markets. Current recycling methods for PEF are limited, and environmental concerns regarding its accumulation make innovative solutions necessary. We will investigate how a specific chemical mixture (urea and zinc chloride, known as a deep eutectic solvent or DES) can break down PEF into its original components for reuse. By using neutron scattering techniques, we hope to understand the detailed molecular processes involved in this reaction, which could help design greener recycling strategies for sustainable plastics.
DOI: 10.5286/isis.e.rb2510328
title: μSR investigation of 1D chain magnetic system: LiYbW2O8

description: Low-dimensional magnetic systems offer a rich platform for investigating novel quantum phenomena like Quantum Spin liquid (QSL) driven by strong quantum effects. In this context, we have synthesized a 1D chain magnet, LiYbW2O8, with a 1D chain of Yb-Yb ions. This system shows no disorder between Li and Yb sites and crystallizes in a wolframite structure. Here, we propose to study the spin dynamics and muon spin relaxation by combining zero-field, longitudinal field, and weak transverse field muon measurements. We will further confirm the absence of static magnetism, as suggested by primary magnetic data, down to 0.4 K. Hence, this will provide a complete picture of this 1D chain lattice-based promising quantum spin liquid candidate material.
DOI: 10.5286/isis.e.rb2510328-1
title: μSR investigation of 1D chain magnetic system: LiYbW2O8

description: Low-dimensional magnetic systems offer a rich platform for investigating novel quantum phenomena like Quantum Spin liquid (QSL) driven by strong quantum effects. In this context, we have synthesized a 1D chain magnet, LiYbW2O8, with a 1D chain of Yb-Yb ions. This system shows no disorder between Li and Yb sites and crystallizes in a wolframite structure. Here, we propose to study the spin dynamics and muon spin relaxation by combining zero-field, longitudinal field, and weak transverse field muon measurements. We will further confirm the absence of static magnetism, as suggested by primary magnetic data, down to 0.4 K. Hence, this will provide a complete picture of this 1D chain lattice-based promising quantum spin liquid candidate material.
DOI: 10.34816/ifao.archives.233005
title: SAQQARA_di_1994_00969

description: Référence : di_1994_00969<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/dky-6b5-mfm
title: Silene glareosa subsp. glareosa

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2510588
title: Mechanistic investigations into the electrochemical performance of partially disordered LiNiO2

description: Cation-disordered oxides are attracting a great deal of attention as the next generation high energy Li-ion cathode materials given their exceptionally high capacities (~ 300 mAh g-1), and their high chemical versatility. Moreover, unlike common layered oxide cathodes, like LiNiO2 (LNO), the disordered arrangement of cations in the network enables isotropic, small volume changes for enhanced stability and electrochemical properties. Since its discovery in 1954, LNO has been thoroughly investigated as cathode for Li-ion batteries given its high operating voltage and electrochemical capacity. However, its commercial use has been hindered by its thermal instability at high degrees of de-lithiation as well as by its fast capacity fade upon consecutive cycles. We have recently developed a method to convert the layered (LNO) into a cation-disordered rock salt (DRS-LNO) via gradual introduction of disorder resulting in an improvement in its electrochemical performance. With this proposal we intend to unveil the structure of new partially disordered LNO (PD-LNO) cathode materials showing different capacity and stability depending on the degree of disorder in the system. Big-box modelling of this data will provide definitive information on the local atomic rearrangements and its effect on the O-redox and electronic structure of the material, to provide a fundamental understanding on the mechanism behind the differences in capacity and stability observed in these materials.
DOI: 10.5286/isis.e.rb2510588-1
title: Mechanistic investigations into the electrochemical performance of partially disordered LiNiO2

description: Cation-disordered oxides are attracting a great deal of attention as the next generation high energy Li-ion cathode materials given their exceptionally high capacities (~ 300 mAh g-1), and their high chemical versatility. Moreover, unlike common layered oxide cathodes, like LiNiO2 (LNO), the disordered arrangement of cations in the network enables isotropic, small volume changes for enhanced stability and electrochemical properties. Since its discovery in 1954, LNO has been thoroughly investigated as cathode for Li-ion batteries given its high operating voltage and electrochemical capacity. However, its commercial use has been hindered by its thermal instability at high degrees of de-lithiation as well as by its fast capacity fade upon consecutive cycles. We have recently developed a method to convert the layered (LNO) into a cation-disordered rock salt (DRS-LNO) via gradual introduction of disorder resulting in an improvement in its electrochemical performance. With this proposal we intend to unveil the structure of new partially disordered LNO (PD-LNO) cathode materials showing different capacity and stability depending on the degree of disorder in the system. Big-box modelling of this data will provide definitive information on the local atomic rearrangements and its effect on the O-redox and electronic structure of the material, to provide a fundamental understanding on the mechanism behind the differences in capacity and stability observed in these materials.
DOI: 10.5286/isis.e.rb2510725-1
title: Investigating phase transitions in Lipid Nanoparticles (LNPs) by coupling SANS with in-situ DLS to aid LNP design

description: Lipid nanoparticles (also known as LNPs) are revolutionizing genetic medicine. Many clinical LNP formulations have surprisingly similar lipid compositions but different geometries. Recently, it has been reported that the buffers used to formulate LNPs impact LNP in vivo performance. We have used these findings to generate mRNA loaded LNPs with the same lipid composition but different internal structures.
A likely consequence of this is a redistribution of the lipid components which may alter the phase behavior and structural transitions of the LNPs. This experiment couples in-situ light scattering and SANS to study lipid nanoparticle structural variations, aggregation and stability over clinically relevant temperatures and spanning known phase transition regions. This will enable us to investigate which structural transitions LNPs undergo over these temperature ranges and correlate these to particle stability using in situ DLS. This information is critical for cell-based LNP assays where storage of LNPs between formulation and cell experiments is necessary and to enable enhanced shipment of LNPs. Furthermore we anticipate that establishing the structural changes during observed LNP phase transitions will enhance our ability to rationally engineer LNPs.
DOI: 10.3535/0tv-nnm-z52
title: Amaranthus emarginatus subsp. pseudogracilis (Thell.) Hügin

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/241-djy-bnw
title: Setaria faberi R.A.W.Herrm.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.