cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e.rb2310196
title: Determining the location of the low temperature termination of the Frenkel line on the phase diagram

description: A remarkable and unexpected feature about the Frenkel line as proposed in 2012 is the fact that it demarcates regions on the phase diagram where some fluid properties exhibit liquid-like versus gas-like behaviour, yet does not pass through the critical point. Instead it was proposed to cross the critical temperature at (roughly) 3x the critical density then trend to lower density upon temperature decrease and intersect the vapour pressure curve at 0.75 – 0.8Tc. Whilst experimental works have focussed on the supercritical region, the theoretical proposal that the Frenkel line intersects the vapour pressure curve at 0.75 – 0.8Tc has been challenged by an alternate proposal (from classical molecular dynamics simulations, using nitrogen as an example) that it continues to the vicinity of the triple point. Here, we are therefore making the case for an experiment on subcritical fluid nitrogen at 90 K (0.71Tc) to discover in what region of the Pressure-temperature (P,T) phase diagram the low P,T termination of the Frenkel line lies.
DOI: 10.5286/isis.e.rb2310196-1
title: Determining the location of the low temperature termination of the Frenkel line on the phase diagram

description: A remarkable and unexpected feature about the Frenkel line as proposed in 2012 is the fact that it demarcates regions on the phase diagram where some fluid properties exhibit liquid-like versus gas-like behaviour, yet does not pass through the critical point. Instead it was proposed to cross the critical temperature at (roughly) 3x the critical density then trend to lower density upon temperature decrease and intersect the vapour pressure curve at 0.75 – 0.8Tc. Whilst experimental works have focussed on the supercritical region, the theoretical proposal that the Frenkel line intersects the vapour pressure curve at 0.75 – 0.8Tc has been challenged by an alternate proposal (from classical molecular dynamics simulations, using nitrogen as an example) that it continues to the vicinity of the triple point. Here, we are therefore making the case for an experiment on subcritical fluid nitrogen at 90 K (0.71Tc) to discover in what region of the Pressure-temperature (P,T) phase diagram the low P,T termination of the Frenkel line lies.
DOI: 10.3535/klm-5jh-az6
title: Mutisia spinosa var. pulchella (Speg.) Cabrera

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/wrj-8k1-xh8
title: Epilobium L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220618
title: The application of INS to investigate toluene methylation over a commercial grade hierarchical ZSM-5 zeolite (TOSCA)
DOI: 10.5286/isis.e.rb2220618-2
title: The application of INS to investigate toluene methylation over a commercial grade hierarchical ZSM-5 zeolite (TOSCA)
DOI: 10.5286/isis.e.rb2310691-2
title: Chasing a new paradigm in frustrated magnets : 1st experiment on rare earth antiperovskite (WISH)

description: Our recent theoretical work suggests that the antiperovskite lattice with Ising spins can host a variety of exotic phases and be a promising new playground for frustrated magnets with fragmented spin ice states and emergent monopoles. Experimental realizations of such an idealized system are needed but the required topology using large Ising spins is difficult to achieve due to chemical constraints. We have identified a suitable candidate in Ho3(PN4)O which has recently been synthesized via a high pressure-high temperature route. We propose neutron powder diffraction measurements at ultra-low temperatures on this new compound to determine the ground state of this exciting new rare-earth anti-perovskite within the context of our theoretical work. We have also applied for muon spin relaxation measurements on EMU in this current round.
DOI: 10.3535/rpv-zk2-p42
title: Myrsine africana L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/t0n-gs8-lph
title: Plantago sericea Ruiz & Pav.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220683
title: Spin Wave Dispersion in Perovskite Nickelates
DOI: 10.5286/isis.e.rb2220683-3
title: Spin Wave Dispersion in Perovskite Nickelates
DOI: 10.5286/isis.e.rb2269102-2
title: The synthesis of casein micelles to determine their formation from casein proteins
DOI: 10.3535/tnc-nls-jsm
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220539-1
title: Time reversal symmetry breaking phase in the normal state of electron doped CsV3Sb5 2D kagome superconductor
DOI: 10.5286/isis.e.rb2300048
title: Effect of Liposome Surface Charge and Rigidity on Interaction with Gold Nanoparticles

description: Liposomes and cell membranes have in common the outer double lipid membrane, and their compositions usually includes phosphatidylcholine lipids. Therefore, liposomes can be used as a proxy to study cell membrane stability and interactions with nanomaterials. To investigate liposome/AuNP interaction, liposomes of different phosphocholine composition and phase with zwitterionic, negative and positive surface charges in liquid and gel state are fabricated and blended with monodisperse gold nanoparticles (AuNP). The resulting systems are then characterized by a combination of techniques, namely, DLS, ELS, UV-Vis, SAXS, and TEM. Our Results show significant differences in liposome/nanoparticle interactions between the samples under study. This leads to different strength of interaction and levels of AuNP aggregation, depending on the membrane rigidity as well as sign and strength of the liposome surface charge.
DOI: 10.5286/isis.e.rb2300048-1
title: Effect of Liposome Surface Charge and Rigidity on Interaction with Gold Nanoparticles

description: Liposomes and cell membranes have in common the outer double lipid membrane, and their compositions usually includes phosphatidylcholine lipids. Therefore, liposomes can be used as a proxy to study cell membrane stability and interactions with nanomaterials. To investigate liposome/AuNP interaction, liposomes of different phosphocholine composition and phase with zwitterionic, negative and positive surface charges in liquid and gel state are fabricated and blended with monodisperse gold nanoparticles (AuNP). The resulting systems are then characterized by a combination of techniques, namely, DLS, ELS, UV-Vis, SAXS, and TEM. Our Results show significant differences in liposome/nanoparticle interactions between the samples under study. This leads to different strength of interaction and levels of AuNP aggregation, depending on the membrane rigidity as well as sign and strength of the liposome surface charge.
DOI: 10.3535/8jp-hfe-0aw
title: Quercus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/eq3-9hq-jhv
title: Silene L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2220539
title: Time reversal symmetry breaking phase in the normal state of electron doped CsV3Sb5 2D kagome superconductor
DOI: 10.5286/isis.e.rb2320206
title: Investigations of magnetic ground state of Fe1/3TaS2

description: In recent years, there has been a large research interest in noncentrosymmetric systems in part due to the exotic physics these systems display. Examples of chiral magnets include a family of intercalated transition metal dichalcogenides. Members of this family have been shown to host a chiral soliton lattice and other exotic spin textures. They have great potential for spintronic device applications. DC magnetisation measurement report that Fe1/3TaS2 has an helimagnetic ground state. Here, we propose to use powder and single crystal neutron diffraction to establish the type of long range order and magnetic propagation vector and then to characterize the possible exotic magnetic structure under applied magnetic fields.
DOI: 10.5286/isis.e.rb2320206-1
title: Investigations of magnetic ground state of Fe1/3TaS2

description: In recent years, there has been a large research interest in noncentrosymmetric systems in part due to the exotic physics these systems display. Examples of chiral magnets include a family of intercalated transition metal dichalcogenides. Members of this family have been shown to host a chiral soliton lattice and other exotic spin textures. They have great potential for spintronic device applications. DC magnetisation measurement report that Fe1/3TaS2 has an helimagnetic ground state. Here, we propose to use powder and single crystal neutron diffraction to establish the type of long range order and magnetic propagation vector and then to characterize the possible exotic magnetic structure under applied magnetic fields.
DOI: 10.3535/km9-fcl-q1k
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310508-1
title: Exploring the electron-doping effect on the CsV3Sb5 2D kagome superconductor

description: The two-dimensional kagome lattice can host a variety of exotic electronic physics, such as quantum spin liquids, various topological states, and a wide array of instabilities, ranging from bond density wave order to charge fractionalization, charge density waves, and unconventional superconductivity. We propose a muon spin spectroscopy investigation of the superconducting state of the newly discovered CsV3Sb5 two-dimensional Kagome compound as a function of the electron doping driven by the Te/Sb heterovalent partial substitution. Transverse field measurements will be used to investigate the superconducting gap nature and to measure the London penetration depth evolution with doping. Zero field measurements will be performed to study the possible presence of time-reversal symmetry breaking in the superconducting state induced by the doping. This study is expected to give significant experimental outcomes to understand the exotic and rich quantum behaviour arising from the 2D kagome lattice.
DOI: 10.5286/isis.e.rb2320065
title: Structural analysis of multicomponent LiCl-MgCl2- D2O/H2O solutions

description: We propose to conduct a neutron scattering investigation of the multicomponent LiCl-MgCl2-D2O/H2O aqueous system. The neutron scattering measurements will provide insights into the hydration shell of ions and the hydrogen bond network as a function of solution composition. Experiments are expected be conducted at the NIMROD (or SANDALS) diffractometer. Assisted by EPSR, the scattering data could provide the hydration structure of Mg2+(H2O)n, Li+(H2O)n and Cl-(H2O)n, also show the contact ion pairs (Mg2+...Cl-, Li+...Cl-) property in these aqueous solutions. These experiments will be complemented by ab initio and classical molecular dynamics simulations of LiCl-MgCl2-D2O/H2O to aid neutron scattering interpretation. This experiment-theory approach will link the atomistic processes to the conditions of solution composition affecting LiCl crystallization. Such knowledge will provide informed-based guidelines for selecting additives in the LiCl-MgCl2-H2O system that promote the separation and purification of LiCl, an important battery raw materials and chemical raw material. Insights gained by this study will also be applicable to the crystallization of other inorganic materials from multicomponent aqueous systems.
DOI: 10.5286/isis.e.rb2320065-1
title: Structural analysis of multicomponent LiCl-MgCl2- D2O/H2O solutions

description: We propose to conduct a neutron scattering investigation of the multicomponent LiCl-MgCl2-D2O/H2O aqueous system. The neutron scattering measurements will provide insights into the hydration shell of ions and the hydrogen bond network as a function of solution composition. Experiments are expected be conducted at the NIMROD (or SANDALS) diffractometer. Assisted by EPSR, the scattering data could provide the hydration structure of Mg2+(H2O)n, Li+(H2O)n and Cl-(H2O)n, also show the contact ion pairs (Mg2+...Cl-, Li+...Cl-) property in these aqueous solutions. These experiments will be complemented by ab initio and classical molecular dynamics simulations of LiCl-MgCl2-D2O/H2O to aid neutron scattering interpretation. This experiment-theory approach will link the atomistic processes to the conditions of solution composition affecting LiCl crystallization. Such knowledge will provide informed-based guidelines for selecting additives in the LiCl-MgCl2-H2O system that promote the separation and purification of LiCl, an important battery raw materials and chemical raw material. Insights gained by this study will also be applicable to the crystallization of other inorganic materials from multicomponent aqueous systems.
DOI: 10.3535/dcg-ct2-8k2
title: Plantae

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/dk3-lk0-ada
title: Myrsine africana L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310508
title: Exploring the electron-doping effect on the CsV3Sb5 2D kagome superconductor

description: The two-dimensional kagome lattice can host a variety of exotic electronic physics, such as quantum spin liquids, various topological states, and a wide array of instabilities, ranging from bond density wave order to charge fractionalization, charge density waves, and unconventional superconductivity. We propose a muon spin spectroscopy investigation of the superconducting state of the newly discovered CsV3Sb5 two-dimensional Kagome compound as a function of the electron doping driven by the Te/Sb heterovalent partial substitution. Transverse field measurements will be used to investigate the superconducting gap nature and to measure the London penetration depth evolution with doping. Zero field measurements will be performed to study the possible presence of time-reversal symmetry breaking in the superconducting state induced by the doping. This study is expected to give significant experimental outcomes to understand the exotic and rich quantum behaviour arising from the 2D kagome lattice.
DOI: 10.5286/isis.e.rb2310552-1
title: Temperature dependence of pressure-driven structural transitions in the polar hexagonal multiferroic, Mn2Mo3O8

description: The physics of complex magnetic materials remains of interest to the scientific community due to their potential in quantum computing. Materials which contain 4d and 5d magnetic ions often show exotic structural and magnetic behaviour. Mn2Mo3O8 exhibits a Kagome-type layers of Mo3O13 layers separated by complex layers comprised of alternating MnO4 tetrahedra and MnO6 octahedra which are connected in a honeycomb type arrangement. Magnetic ordering arises solely from the manganese layer as a result of the trimerisation of the Mo4+ cations. Structural behaviour under applied pressure provides new insights into the stability of materials and in this case the stability of the Mo4+ trimers. This proposal seeks to investigate the pressure dependence of Mn2Mo3O8 at temperatures of 300 K and 120 K. This information is crucial for the continued understanding of these materials and to direct doping strategies.
DOI: 10.3535/xqn-kds-zen
title: Forsskaolea procridifolia Webb

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310064-2
title: Effect of deuteration on hydrogen bonding in Glycine silver nitrate (GSN): a new isotopic polymorph

description: General: Ferroelectricity in GSN was discovered in 1957 by Pepinsky . This crystal undergoes a displacive type of structural phase transition with a very small transition entropy with curie temperature (TC) to be 218 K. Partial deuteration is found to raise the transition temperature by 15 K. Our Crystallization of the completely deuterated glycine silver nitrate (DGSN) gave a new polymorph with the crystal structure significantly differing from that of the nondeuterated form (GSN). we have also grown partially deuterated GSN (C deuterated, and N deuterated). Our initial characterization shows that the C-Deuterated is similar to DGSN and N deutuerated is similar to GSN. GSN is a light-sensitive crystal. Single-crystal X-ray diffraction investigations are difficult to perform on these crystals due to the problem of crystal deterioration on prolonged exposure to X rays. A way to circumvent the problem of the crystal deterioration on light exposure is to perform a neutron diffraction experiment in cryostat, and neutron diffraction is also a fundamental tool to study the effect of deuteration on the structural changes on the crystals particularly in this case, where the hydrogen bonding interaction seems to play a very important role in the stabilization of the various polymorphs.
DOI: 10.5286/isis.e.rb2310232
title: Magnetic structure of 1D & 2D electrides by powder neutron diffraction

description: Materials in which electrons behave as anions are called electrides. Electrides can be likened to stoichiometric F-centre salts in which the electron concentration is high enough to allow them to interact with each other. As a result, these exotic materials exhibit physical properties represented by the metal-insulator transition. We propose to perform temperature-dependent PND experiments on a series of RE2C and RE5Si3 (RE = Y, Gd-Er) carbides and silicides, which have been successfully synthesised by arc-melting. Our aim is to validate the magnetic electride nature of our materials, and to study the presence/absence of defects and impurities such as adventitious O or H.
DOI: 10.5286/isis.e.rb2310232-1
title: Magnetic structure of 1D & 2D electrides by powder neutron diffraction

description: Materials in which electrons behave as anions are called electrides. Electrides can be likened to stoichiometric F-centre salts in which the electron concentration is high enough to allow them to interact with each other. As a result, these exotic materials exhibit physical properties represented by the metal-insulator transition. We propose to perform temperature-dependent PND experiments on a series of RE2C and RE5Si3 (RE = Y, Gd-Er) carbides and silicides, which have been successfully synthesised by arc-melting. Our aim is to validate the magnetic electride nature of our materials, and to study the presence/absence of defects and impurities such as adventitious O or H.
DOI: 10.5286/isis.e.rb2310552
title: Temperature dependence of pressure-driven structural transitions in the polar hexagonal multiferroic, Mn2Mo3O8

description: The physics of complex magnetic materials remains of interest to the scientific community due to their potential in quantum computing. Materials which contain 4d and 5d magnetic ions often show exotic structural and magnetic behaviour. Mn2Mo3O8 exhibits a Kagome-type layers of Mo3O13 layers separated by complex layers comprised of alternating MnO4 tetrahedra and MnO6 octahedra which are connected in a honeycomb type arrangement. Magnetic ordering arises solely from the manganese layer as a result of the trimerisation of the Mo4+ cations. Structural behaviour under applied pressure provides new insights into the stability of materials and in this case the stability of the Mo4+ trimers. This proposal seeks to investigate the pressure dependence of Mn2Mo3O8 at temperatures of 300 K and 120 K. This information is crucial for the continued understanding of these materials and to direct doping strategies.
DOI: 10.3535/12k-s5m-rkx
title: Ourisia ruellioides (L. fil.) Kuntze

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/rgl-df9-3w9
title: Myrsine africana L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e.rb2310064
title: Effect of deuteration on hydrogen bonding in Glycine silver nitrate (GSN): a new isotopic polymorph

description: General: Ferroelectricity in GSN was discovered in 1957 by Pepinsky . This crystal undergoes a displacive type of structural phase transition with a very small transition entropy with curie temperature (TC) to be 218 K. Partial deuteration is found to raise the transition temperature by 15 K. Our Crystallization of the completely deuterated glycine silver nitrate (DGSN) gave a new polymorph with the crystal structure significantly differing from that of the nondeuterated form (GSN). we have also grown partially deuterated GSN (C deuterated, and N deuterated). Our initial characterization shows that the C-Deuterated is similar to DGSN and N deutuerated is similar to GSN. GSN is a light-sensitive crystal. Single-crystal X-ray diffraction investigations are difficult to perform on these crystals due to the problem of crystal deterioration on prolonged exposure to X rays. A way to circumvent the problem of the crystal deterioration on light exposure is to perform a neutron diffraction experiment in cryostat, and neutron diffraction is also a fundamental tool to study the effect of deuteration on the structural changes on the crystals particularly in this case, where the hydrogen bonding interaction seems to play a very important role in the stabilization of the various polymorphs.
DOI: 10.5286/isis.e.rb2320001-1
title: Magnetic Excitation Spectrum of Rouaite, Cu₂(NO₃)(OD)₃

description: The mineral rouaite, Cu₂(NO₃)(OD)₃ in synthetic form, consists of triangular-lattice planes of Cu2+, compressed along the crystallographic b axis to form chains. Below 4.8 K, these chains alternate ferro- and antiferromagnetic, with consecutive ferromagnetic chains having opposite spin orientation. This is essentially the same magnetic sublattice and magnetic ground state as in Cu(OD)₃Br (botallackite), the only material in which spinon-magnon mixing has been reported to date. We propose to look for spinon-magnon mixing in rouaite, starting with time-of-flight spectroscopy. This will also reveal the magnon spectrum, allowing us to model the interaction parameters underlying the magnetic order. Above 4.8 K, rouaite enters an incommensurate phase, the excitation spectrum of which would also provide crucial information.
DOI: 10.21233/n3tf7m
title: Baker Lake Site 2 pollen surface sample dataset

description: Raw data for the Baker Lake Site 2 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: 10.3535/60e-p56-r11
title: Quercus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/hvn-my5-7z1
title: Nymphaea loriana Wiersema, Hellq. & Borsch

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