cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5286/isis.e/isis.e.rb2410065
title: Order-disorder transition in the new ionic conductor Cs2MoO4

description: Hydrogen technologies such as ceramic fuel cells can use hydrogen as a fuel to produce electrical energy with zero greenhouse emissions. To enable the widespread deployment of hydrogen-based technologies, fundamental research is urgently needed to develop new conductors with superior ionic conductivity. We have discovered significant ionic (oxide ion-proton) conductivity in Cs2MoO4, which shows an order-disorder phase transition to a highly conducting disordered phase at 568 °C. The ionic conductivity of the high temperature phase is higher than the conductivity of commercially available electrolyte materials, making Cs2MoO4 suitable for practical applications at reduced temperature. In order to fully characterise the structural transition and the high temperature phase of Cs2MoO4, we propose to perform high-resolution neutron powder diffraction measurements on HRPD as function of temperature. The experimental findings will shed light on the link between crystal structure and the mechanism of ionic conduction in Cs2MoO4, so to inform further materials design in this newly discovered class of ionic conductors.
DOI: 10.5286/isis.e/isis.e.rb2490220-1
title: Structural study of Na2/3Fe1/3Mn2/3O2 Layered Oxide Cathode Material synthesised at 750 C for Sodium-ion Battery Application
DOI: 10.34816/ifao.archives.232821
title: SAQQARA_nb_1994_03292

description: Référence : nb_1994_03292<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/wfc-y93-q3b
title: Vahlodea Fr.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/y93-8pw-qbc
title: Poa infirma Kunth

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2310300-1
title: Dynamics of dilute spin ice: ghost spins and topological spin glass

description: Ho2Ti2O7 has attracted much attention as host to spin-ice behaviour, a magnetic phase that gives rise to intriguing topological properties, including the stabilisation of emergent magnetic monopoles, fractional excitations in three dimensions. Our work has shown that structural disorder in pyrochlore materials allows control of the magnetic state and the magnetic relaxation. Here we propose to study this by substituting magnetic Ho for non-magnetic Y in Ho2Ti2O7, where in the high Ho limit ghost spins at the Y sites lead to a topological spin glass, whereas at low Ho limit the system is dominated
by dipolar interactions. Our work to date reveals a number of changes in the dynamic behaviour of these materials below 2 K as a function of substitution. The proposed longitudinal-field muon-spin relaxation measurements allow a unique insight into the magnetic behaviour, where we are directly sensitive to the magnetism in the samples, rather than the stray field as has been previously measured.
DOI: 10.5286/isis.e/isis.e.rb2400062
title: Interrelationship between vanadium diffusion and defects in VO2

description: Although vanadium ions are known to diffuse through oxygen vacancies, the microscopic diffusing nature is still not clarified. We will therefore plan to measure the following three VO2 samples with muon spin rotation and relaxation: VO2, VO2-d, and VO2+d. When the composition is very close to stoichiometric VO2, vanadium diffusion would be suppressed. On the contrary, such diffusion could be enhanced by oxygen vacancies in VO2-d or vanadium vacancies in VO2+d. Such information is crucial to understand the mass transport in solid oxides and useful to develop novel solid state ionic conductors.
DOI: 10.5286/isis.e/isis.e.rb2400062-1
title: Interrelationship between vanadium diffusion and defects in VO2

description: Although vanadium ions are known to diffuse through oxygen vacancies, the microscopic diffusing nature is still not clarified. We will therefore plan to measure the following three VO2 samples with muon spin rotation and relaxation: VO2, VO2-d, and VO2+d. When the composition is very close to stoichiometric VO2, vanadium diffusion would be suppressed. On the contrary, such diffusion could be enhanced by oxygen vacancies in VO2-d or vanadium vacancies in VO2+d. Such information is crucial to understand the mass transport in solid oxides and useful to develop novel solid state ionic conductors.
DOI: 10.3535/30w-5l3-v3p
title: Clinopodium vulgare subsp. vulgare

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2310300
title: Dynamics of dilute spin ice: ghost spins and topological spin glass

description: Ho2Ti2O7 has attracted much attention as host to spin-ice behaviour, a magnetic phase that gives rise to intriguing topological properties, including the stabilisation of emergent magnetic monopoles, fractional excitations in three dimensions. Our work has shown that structural disorder in pyrochlore materials allows control of the magnetic state and the magnetic relaxation. Here we propose to study this by substituting magnetic Ho for non-magnetic Y in Ho2Ti2O7, where in the high Ho limit ghost spins at the Y sites lead to a topological spin glass, whereas at low Ho limit the system is dominated
by dipolar interactions. Our work to date reveals a number of changes in the dynamic behaviour of these materials below 2 K as a function of substitution. The proposed longitudinal-field muon-spin relaxation measurements allow a unique insight into the magnetic behaviour, where we are directly sensitive to the magnetism in the samples, rather than the stray field as has been previously measured.
DOI: 10.5286/isis.e/isis.e.rb2490101
title: Exploring the stability and protonic conductivity in W- and Mo-substituted LaNbO4 under the reducing atmosphere
DOI: 10.5286/isis.e/isis.e.rb2490101-1
title: Exploring the stability and protonic conductivity in W- and Mo-substituted LaNbO4 under the reducing atmosphere
DOI: 10.34816/ifao.archives.232822
title: SAQQARA_nb_1994_03294

description: Référence : nb_1994_03294<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/3b1-g3f-ezv
title: Asteraceae Dumort.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/g1b-8g2-xsh
title: Fritillaria alfredae Post

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410423
title: Local structure of the layered oxysulfide Sr2MnO2Cu5.5S4

description: This is a proposal to probe the local structure in the layered oxysulfide, Sr2MnO2Cu5.5S4 in particular to probe the local Mn environment for possible Mn2+/Mn3+ charge order and to model the variable temperature behaviour of the copper sulfide layers which have Cu+ ions distributed over a range of sites. This compound is being probed as a potential thermoelectric material and a full understanding of the disorder in the sulfide layer and the influence of the structure of the manganese oxide layers on the electronic properties will be key to full understanding of the physical properties.
DOI: 10.5286/isis.e/isis.e.rb2410423-1
title: Local structure of the layered oxysulfide Sr2MnO2Cu5.5S4

description: This is a proposal to probe the local structure in the layered oxysulfide, Sr2MnO2Cu5.5S4 in particular to probe the local Mn environment for possible Mn2+/Mn3+ charge order and to model the variable temperature behaviour of the copper sulfide layers which have Cu+ ions distributed over a range of sites. This compound is being probed as a potential thermoelectric material and a full understanding of the disorder in the sulfide layer and the influence of the structure of the manganese oxide layers on the electronic properties will be key to full understanding of the physical properties.
DOI: 10.5286/isis.e/isis.e.rb2420245-1
title: Structural characterisation of a new family of sulfonic acid functionalised polyamide membranes for Fuel Cell applications at high temperature

description: Polyamides form a class of polymers with exceptional performance for a wide range of functional applications. Their properties are easily tailored by inducing morphological alterations by changing the synthesis pathway and/or conditions as well as incorporating flexible groups into the polymer backbone. Fully aromatic polyamides that have excellent high-temperature stability combined with tunable physical and chemical properties are increasingly used for a range of industrial applications. Here we will study a polyamide membrane that has already been established for reverse osmosis water filtration as a proton exchange membrane for fuel cell devices, with a specific focus on high temperature applications. The results will allow us to unravel the chemical and morphological factors essential to advance the design of high-performance membranes for energy applications.
DOI: 10.3535/dg0-41z-yv9
title: Viola alba Besser

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/m7h-5l8-nyx
title: Ranunculus L.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2410210
title: Neutron Diffraction to Explain the ‘Trapdoor’ Mechanism of Zeolites for H2/D2 Separation

description: Separating hydrogen and deuterium is among the most formidable separation challenges. One method is using porous materials as Quantum Sieves, where chabazite zeolites (CHA) are highly effective at separating the two species due to the small pore windows within the crystalline framework. Purely siliceous (SiO2) CHA has poor D2/H2 selectivity. Extra-framework cations improve D2 selectivity in zeolites, specifically in CHA species where a “trapdoor mechanism” is suggested, where extra-framework cations sit in the centre of the CHA 8 membered ring. Our recent adsorption work on CHA with a potassium counterions (K-CHA) suggests that at ~159 K, the K+ species moves to one side, allowing a D2 molecule to slip past it, into the framework, hence acting as a “trapdoor”, whereas this does not occur with H2. This provides a unique opportunity to exploit this system for D2/H2 uptake at comparatively high temperatures. 
Recently we have shown that combining Na+ and K+ cations in the same CHA system, leads to enhanced D2 uptake. In this work we will investigate the H2 and D2 uptake behaviour of K-CHA and NaK-CHA using Neutron Diffraction between 120 and 195 K. In doing so we will observe the distortion of the framework on introducing Na+ cations and contrast the behaviour of these two systems at different temperatures. Here the adsorbed H2 and D2 will contribute to the diffraction pattern, providing a further information about the adsorption and trapdoor mechanisms.
DOI: 10.5286/isis.e/isis.e.rb2410210-1
title: Neutron Diffraction to Explain the ‘Trapdoor’ Mechanism of Zeolites for H2/D2 Separation

description: Separating hydrogen and deuterium is among the most formidable separation challenges. One method is using porous materials as Quantum Sieves, where chabazite zeolites (CHA) are highly effective at separating the two species due to the small pore windows within the crystalline framework. Purely siliceous (SiO2) CHA has poor D2/H2 selectivity. Extra-framework cations improve D2 selectivity in zeolites, specifically in CHA species where a “trapdoor mechanism” is suggested, where extra-framework cations sit in the centre of the CHA 8 membered ring. Our recent adsorption work on CHA with a potassium counterions (K-CHA) suggests that at ~159 K, the K+ species moves to one side, allowing a D2 molecule to slip past it, into the framework, hence acting as a “trapdoor”, whereas this does not occur with H2. This provides a unique opportunity to exploit this system for D2/H2 uptake at comparatively high temperatures. 
Recently we have shown that combining Na+ and K+ cations in the same CHA system, leads to enhanced D2 uptake. In this work we will investigate the H2 and D2 uptake behaviour of K-CHA and NaK-CHA using Neutron Diffraction between 120 and 195 K. In doing so we will observe the distortion of the framework on introducing Na+ cations and contrast the behaviour of these two systems at different temperatures. Here the adsorbed H2 and D2 will contribute to the diffraction pattern, providing a further information about the adsorption and trapdoor mechanisms.
DOI: 10.5286/isis.e/isis.e.rb2420245
title: Structural characterisation of a new family of sulfonic acid functionalised polyamide membranes for Fuel Cell applications at high temperature

description: Polyamides form a class of polymers with exceptional performance for a wide range of functional applications. Their properties are easily tailored by inducing morphological alterations by changing the synthesis pathway and/or conditions as well as incorporating flexible groups into the polymer backbone. Fully aromatic polyamides that have excellent high-temperature stability combined with tunable physical and chemical properties are increasingly used for a range of industrial applications. Here we will study a polyamide membrane that has already been established for reverse osmosis water filtration as a proton exchange membrane for fuel cell devices, with a specific focus on high temperature applications. The results will allow us to unravel the chemical and morphological factors essential to advance the design of high-performance membranes for energy applications.
DOI: 10.34816/ifao.archives.232823
title: SAQQARA_nb_1994_03295

description: Référence : nb_1994_03295<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/f5s-mpz-n9m
title: Melica uniflora Retz.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/mnk-5l8-xj7
title: Convolvulaceae Juss.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2310529-1
title: Study of structure and viscosity correlation in novel ionic liquids.

description: Ionic Liquids (ILs) have three distinct structural motifs: adjacency correlations, charge alterations, and polar-apolar alterations. Each of these motifs has its own relaxation. These motifs are associated with different length scales and are described by the peaks associated with the structure-function S(Q) and its time-dependent version S(Q,t). X-ray scattering experiments and MD simulations can probe the S(Q). On the other hand, QENS can be used to probe the variation of local dynamics over different length scales associated with the process of charge blurring within the charge networks. The amphiphilic ions show nanoscale domain segregation leading to regions with diﬀerent local frictions is one of the primary motivations for us to explore neutron scattering methods to measure the dynamics on speciﬁc length scales using QENS experiments which addressed by the variation of measured diffusivities across the length scales that define the charge-ordering of these ionic liquids, 
 Experiments show changing one atom or functional group of IL anion or cation results in a noticeable change in viscosity, while the liquid structure is largely unaffected. By combining NMR measurements together with molecular dynamics from QENS and the measured and calculated liquid factors, we plan to resolve the connections between ILs structure from glassy-state to liquid state, dynamics, and ion self-diffusivities and how these combines to determine the bulk liquid shear viscosities.
DOI: 10.5286/isis.e/isis.e.rb2420494
title: Oxidation of moringa-extracted protein at the mineral-water interface by aqueous ozone and hydroxyl radicals

description: Abstract
Protein aerosol exist in the atmosphere and may accumulate on the surface of mineral aerosol, altering their impact on the planet. To investigate this effect, moringa protein will be deposited onto silica blocks and oxidised at the water-mineral interface using aqueous phase ozone and OH radicals. The oxidation of proteinaceous material at the mineral-water is novel in the field of atmospheric sciences yet the kinetics of oxidation of protein coatings are vital in determining the atmospheric lifetime of proteins during cloud-processing on atmospheric mineral aerosol. Film thickness measurements throughout the oxidation of the protein film will allow us to determine the changes of the optical properties of a mixed phase water-mineral aerosol in the atmosphere owing to the presence of a protein coating with changing thickness at the mineral-water interface, which in turn can be used to determine the atmospheric importance.
DOI: 10.5286/isis.e/isis.e.rb2420494-1
title: Oxidation of moringa-extracted protein at the mineral-water interface by aqueous ozone and hydroxyl radicals

description: Abstract
Protein aerosol exist in the atmosphere and may accumulate on the surface of mineral aerosol, altering their impact on the planet. To investigate this effect, moringa protein will be deposited onto silica blocks and oxidised at the water-mineral interface using aqueous phase ozone and OH radicals. The oxidation of proteinaceous material at the mineral-water is novel in the field of atmospheric sciences yet the kinetics of oxidation of protein coatings are vital in determining the atmospheric lifetime of proteins during cloud-processing on atmospheric mineral aerosol. Film thickness measurements throughout the oxidation of the protein film will allow us to determine the changes of the optical properties of a mixed phase water-mineral aerosol in the atmosphere owing to the presence of a protein coating with changing thickness at the mineral-water interface, which in turn can be used to determine the atmospheric importance.
DOI: 10.3535/dzl-jj6-2xy
title: Arabidopsis thaliana (L.) Heynh.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.3535/nrq-azh-43q
title: Phippsia algida (Sol.) R.Br.

description: Digital Specimen for the physical specimen hosted at Botanic Garden and Botanical Museum Berlin.
DOI: 10.5286/isis.e/isis.e.rb2310529
title: Study of structure and viscosity correlation in novel ionic liquids.

description: Ionic Liquids (ILs) have three distinct structural motifs: adjacency correlations, charge alterations, and polar-apolar alterations. Each of these motifs has its own relaxation. These motifs are associated with different length scales and are described by the peaks associated with the structure-function S(Q) and its time-dependent version S(Q,t). X-ray scattering experiments and MD simulations can probe the S(Q). On the other hand, QENS can be used to probe the variation of local dynamics over different length scales associated with the process of charge blurring within the charge networks. The amphiphilic ions show nanoscale domain segregation leading to regions with diﬀerent local frictions is one of the primary motivations for us to explore neutron scattering methods to measure the dynamics on speciﬁc length scales using QENS experiments which addressed by the variation of measured diffusivities across the length scales that define the charge-ordering of these ionic liquids, 
 Experiments show changing one atom or functional group of IL anion or cation results in a noticeable change in viscosity, while the liquid structure is largely unaffected. By combining NMR measurements together with molecular dynamics from QENS and the measured and calculated liquid factors, we plan to resolve the connections between ILs structure from glassy-state to liquid state, dynamics, and ion self-diffusivities and how these combines to determine the bulk liquid shear viscosities.
DOI: 10.5286/isis.e/isis.e.rb2420134
title: Exploring Photothermal Properties and Structural Changes of Naphthalene Diimides: Small Angle Neutron Scattering Investigation

description: The proposal aims to investigate the photothermal properties of naphthalene diimides (NDI) and their structural changes induced by pH variations using Small Angle Neutron Scattering (SANS). NDIs are known for their versatile properties and diverse applications, including in optoelectronics and nanomedicine, due to their ability to form stable radical anions and self-assemble. Six types of NDI molecules will be studied for their photothermal potential, with pH sensitivity offering precise control over their behavior. Photothermal experiments will involve irradiating NDIs in water with 365nm light to generate radical anions and measuring temperature differences at different pH levels. Additionally, SANS will be employed to analyze structural changes induced by pH variations and photothermal effects, providing insights into morphology, stability, and photothermal behavior for optimization. The proposed experiments will compare the scattering of 'best' and 'worst' performing NDIs before and after photothermal effects, offering comprehensive insights into their structural properties and photothermal performance.
DOI: 10.5286/isis.e/isis.e.rb2420134-1
title: Exploring Photothermal Properties and Structural Changes of Naphthalene Diimides: Small Angle Neutron Scattering Investigation

description: The proposal aims to investigate the photothermal properties of naphthalene diimides (NDI) and their structural changes induced by pH variations using Small Angle Neutron Scattering (SANS). NDIs are known for their versatile properties and diverse applications, including in optoelectronics and nanomedicine, due to their ability to form stable radical anions and self-assemble. Six types of NDI molecules will be studied for their photothermal potential, with pH sensitivity offering precise control over their behavior. Photothermal experiments will involve irradiating NDIs in water with 365nm light to generate radical anions and measuring temperature differences at different pH levels. Additionally, SANS will be employed to analyze structural changes induced by pH variations and photothermal effects, providing insights into morphology, stability, and photothermal behavior for optimization. The proposed experiments will compare the scattering of 'best' and 'worst' performing NDIs before and after photothermal effects, offering comprehensive insights into their structural properties and photothermal performance.
DOI: 10.34816/ifao.archives.232824
title: SAQQARA_nb_1994_03296

description: Référence : nb_1994_03296<br />Site : Saqqara<br />Secteur : Mastaba de Ti<br />Type : photographie<br />
DOI: 10.3535/bh2-j6z-s9k
title: Veronica L.

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