234 Works

Could sex robots threaten livelihoods [dataset]

Anna Hallam
This study analyses the attitudes of sex workers towards sex dolls and sex robots, and explores how an increase in sex robots on the market may impact the lives and business of sex workers. It focuses primarily on whether or not the displacement of sex workers by sex robots should be a concern. An online 12-question survey was distributed to sex workers through the mailing lists of sex-worker-led unions and activist groups. The questionnaire received...

Metadata for 'Long lifetime hole traps at grain boundaries in CdTe thin-film photovoltaics'

Budhika Mendis
A novel time-resolved cathodoluminescence method, where a pulsed electron beam is generated via the photoelectric effect, is used to probe individual CdTe grain boundaries. Excitons have a short lifetime (100 ps) within the grains and are rapidly quenched at the grain boundary. However, a ~47 meV shallow acceptor, believed to be due to oxygen, can act as a long lifetime hole trap, even at the grain boundaries where their concentration is higher. This provides direct...

Weakly-Emergent Strain Dependent Properties of High Field Superconductors [dataset]

Damian Hampshire
All superconductors in high field magnets operating above 12 T are brittle and subjected to large strains because of the differential thermal contraction between component parts on cool-down and the large Lorentz forces produced in operation. The continuous scientific requirement for higher magnetic fields in superconducting energy-efficient magnets means we must understand and control the high sensitivity of critical current density Jc to strain ε. Here we present very detailed Jc(B, θ, T, ε) measurements...

Quantum reflection of bright solitary matter-waves from a narrow attractive potential: Supporting data.

A. L. Marchant, T. P. Billam, M. M. H. Yu, A. Rakonjac, J. L. Helm, J. Polo, C. Weiss, S. A. Gardiner & S. L. Cornish
Data supporting the work "Quantum reflection of bright solitary matter-waves from a narrow attractive potential". Prepr int available at http://www.arxiv.org/abs/1507.04639.

A terahertz-driven non-equilibrium phase transition in a room temperature atomic vapour [dataset]

Kevin Weatherill
There are few demonstrated examples of phase transitions that may be driven directly by terahertz-frequency electric fields, and those that are known require field strengths exceeding 1MVcm−1. Here we report a non-equilibrium phase transition driven by a weak (≪ 1Vcm−1), continuous-wave terahertz electric field. The system consists of room-temperature caesium vapour under continuous optical excitation to a high-lying Rydberg state, which is resonantly coupled to a nearby level by the terahertz electric field. We use...

Data from "Fluorescent Carbon Dot – Molecular Salt Hydrogels"

Angelina Cayuela, Stuart R. Kennedy, M. Laura Soriano, Christopher D. Jones, M. Laura Soriano, Miguel Valcárcel & Jonathan W. Steed
The incorporation of functionalised carbon nanodots within a novel low molecular weight salt hydrogel derived from 5-aminosalycilic acid is reported. The carbon dots result in markedly enhanced gelation properties, while inclusion within the hydrophobic gel results in a dramatic fluorescence enhancement for the carbon nanomaterials. The resulting hybrid CD Gels exhibit a useful sensor response for heavy metal ions, particularly Pb2+.

Versatile Zeeman slower CsYb data

Stephen A. Hopkins, Kirsteen L. Butler, Alexander Guttridge, Stefan L. Kemp, Ruben Freytag, Ed A. Hinds, Michael R. Tarbutt & Simon L. Cornish
We describe the design, construction and operation of a versatile dual-species Zeeman slower for both Cs and Yb, which is easily adaptable for use with other alkali metals and alkaline earths. With the aid of analytic models and numerical simulation of decelerator action, we highlight several real-world problems affecting the performance of a slower and discuss effective solutions. To capture Yb into a magneto-optical trap (MOT), we use the broad 1S0 to 1P1 transition at...

Progress towards quantum-enhanced interferometry with harmonically trapped quantum matter-wave bright solitons: Supporting data

Bettina Gertjerenken, Timothy P. Wiles & Christoph Weiss
Supporting data for the publication "Progress towards quantum-enhanced interferometry with harmonically trapped quantum matter-wave bright solitons"

Quantum magnetism in molecular spin ladders probed with muon-spin spectroscopy [dataset]

Tom Lancaster, Fan Xiao, Ben Huddart, Robert Williams, Francis Pratt, Blundell, Stephen, , Stewart Clark, Robert Scheuermann, Tatsuo Goko, Simon Ward, Jamie Manson, Christian Ruegg & Karl Kramer
We present the results of muon-spin spectroscopy (μ+SR) measurements on the molecular spin ladder system (Hpip)2CuBr4(1−x)Cl4x, [Hpip=(C5H12N)]. Using transverse field μ+SR we are able to identify characteristic behaviour in each of the regions of the phase diagram of the x=0 strong-rung spin ladder system (Hpip)2CuBr4. Comparison of our results to those of the dimer-based molecular magnet Cu(pyz)(gly)(ClO4) shows several common features. We locate the crossovers in partially disordered (Hpip)2CuBr4(1−x)Cl4x (x=0.05), where a region of behaviour...

Research data for "Testing the limits of NMR crystallography: the case of caffeine–citric acid hydrate"

Hannah E. Kerr
The crystal structure of a new 1:2 caffeine-citric acid hydrate cocrystal is presented. The caffeine molecules are disordered over two positions, with the nature of the disorder confirmed to be static by 13C solid-state NMR. NMR linewidths in statically disordered systems reflect the distribution of local chemical environments, and this study investigates whether the disorder contribution to 13C linewidths can be predicted computationally. The limits of NMR crystallography calculations using density functional theory are tested...

Data for: "Real-Time Near-Field Terahertz Imaging with Atomic Optical Fluorescence"

Christopher G. Wade, Nikola Šibalić, Natalia R. De Melo, Jorge M. Kondo, Charles S. Adams & Kevin J. Weatherill
Terahertz (THz) near-field imaging is a flourishing discipline, with applications from fundamental studies of beam propagation to the characterisation of metameterials and waveguides. Beating the diffraction limit typically involves rastering structures or detectors with length scale shorter than the radiation wavelength; in the THz domain this has been achieved using a number of techniques including scattering tips and apertures. Alternatively, mapping THz fields onto an optical wavelength and imaging the visible light removes the requirement...

Characterisation of phosphorylated nucleotides by collisional and electron-based tandem mass spectrometry by FTICR MS

Jackie Mosely
FT ICR mass spectrometry: collision induced dissociation and electron-based dissociation of phosphorylated nucleotides

Managing and sharing research data​ : an RDM training course [other]

Nicholas Syrotiuk
Part of a Northern Ireland and North East Doctoral Training Partnership (NINE DTP) workshop called "Making the most of your data," held at Durham on 09 July 2019.​

Supporting Data for Metal ‘Turn-off’, Anion ‘Turn-On’ Gelation Cascade in Pyridinylmethyl Ureas

Jonathan W. Steed
Underlying data for paper "Metal ‘Turn-off’, Anion ‘Turn-On’ Gelation Cascade in Pyridinylmethyl Ureas" submitted to Chemical Communications 15/11/16

Supporting Data: Nanometre-scale optical property fluctuations in Cu2ZnSnS4 revealed by low temperature cathodoluminescence

Budhika Mendis
Band tailing is a major contributing factor to the large open circuit voltage (Voc) deficit that is currently limiting Cu2ZnSnS4 (CZTS) photovoltaic devices. It occurs in highly doped, highly compensated semiconductors and gives rise to a non-uniform electronic band structure. Here we report spatially resolved fluctuations in CZTS optical properties using low temperature cathodoluminescence (CL) in a scanning electron microscope (SEM). Principal component analysis reveals three CL peaks whose relative intensity vary across domains ~100...

Data from "Spectroscopic detection of atom-surface interactions in an atomic-vapor layer with nanoscale thickness"

Kate Whittaker, James Keaveney, Charles S Adams & Ifan Hughes
Abstract from paper: We measure the resonance line shape of atomic-vapor layers with nanoscale thickness confined between two sapphire windows. The measurement is performed by scanning a probe laser through resonance and collecting the scattered light. The line shape is dominated by the effects of Dicke narrowing, self-broadening, and atom-surface interactions. By fitting the measured line shape to a simple model we discuss the possibility to extract information about the atom-surface interaction.

Modeling the Critical Current of Polycrystalline Superconducting Films in High Magnetic Fields [dataset]

Alexander I. Blair
We have performed simulations using time-dependent Ginzburg—Landau theory on a 2D polycrystalline system where grain boundaries are modelled as narrow regions with a locally reduced critical temperature (Tc). For the small system sizes investigated, we find that the critical current density (Jc) is not sensitive to changes in grain size until the grain size is sufficiently small that it limits the average superparticle density in the system through the proximity effect. Furthermore, once Tc in...

Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]

Matjaž Gomilšek
The magnetic ground state of the ideal quantum kagome antiferromagnet (QKA) has been a long-standing puzzle, mainly because perturbations to the nearest-neighbor isotropic Heisenberg Hamiltonian can lead to various fundamentally different ground states. Here we investigate a recently synthesized QKA representative, YCu3(OH)6Cl3, in which perturbations commonly present in real materials, like lattice distortion and intersite ion mixing, are absent. Nevertheless, this compound enters a long-range magnetically ordered state below TN = 15K. Our powder neutron...

Durham RCUK [Green] Open Access Data Year 3 (Aug2015-Jul2016)

Sarah Hyland & James Bisset
Data listing all articles and conference papers published by a Durham author acknowledging RCUK funding between August 2015 and July 2016, which met the RCUK Open Access policy requirements via the Green OA route.

Controlling fragment competition on pathways to addressable self-assembly [dataset]

Jim Madge, Mark A. Miller & David Bourne
Addressable self-assembly is the formation of a target structure from a set of unique molecular or colloidal building-blocks, each of which occupies a defined location in the target. The requirement that each type of building-block appears exactly once in each copy of the target introduces severe restrictions on the combinations of particles and on the pathways that lead to successful self-assembly. These restrictions can limit the efficiency of self-assembly and the final yield of the...

Imposition of essential boundary conditions in the material point method (figure data)

Michael Cortis, Charles Augarde, William Coombs, Scott Robinson, Andrews Brennan & Michael Brown
There is increasing interest in the Material Point Method (MPM) as a means of modelling solid mechanics problems in which very large deformations occur, e.g. in the study of landslides and metal forming, however some aspects vital to wider use of the method have to date been ignored, in particular methods for imposing essential boundary conditions in the case where the problem domain boundary does not coincide with the background grid element edges. In this...

Data archive for Chem Comm paper | Furosemide's one little hydrogen atom: NMR crystallography structure verification of powdered molecular organics

Cory Widdifield
The potential of NMR crystallography to verify molecular crystal structures deposited in structural databases is evaluated, with two structures of the pharmaceutical furosemide serving as examples. While the structures differ in the placement of one H atom, using this approach, we verify one of the structures in the Cambridge Structural Database using quantitative tools, while establishing that the other structure does not meet the verification criteria.

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