All Outputs (203)

Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers (2018)
Journal Article

We have investigated the influence of the substrate on the fluorescence of adsorbed organic molecules. Monolayer films of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-diimide (PTCDI), a supramolecular network formed from PTCDI and melamine, and perylen... Read More about Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers.

Spontaneous symmetry breaking and the Goldstone theorem in non-Hermitian field theories (2018)
Journal Article

We demonstrate the extension to parity-time (PT)-symmetric field theories of the Goldstone theorem, confirming that the spontaneous appearance of a field vacuum expectation value via minimization of the effective potential in a non-Hermitian model is... Read More about Spontaneous symmetry breaking and the Goldstone theorem in non-Hermitian field theories.

Rotating kinky braneworlds (2018)
Journal Article

Cylindrical braneworlds have been used in the literature as a convenient way to resolve co-dimension-two branes. They are prevented from collapsing by a massless worldvolume field with non-trivial winding, but here we discuss another way of preventin... Read More about Rotating kinky braneworlds.

Demonstration of differences in colonic volumes, transit, chyme consistency and response to psyllium between healthy and constipated subjects using magnetic resonance imaging (2018)
Journal Article

Background: In functional gastrointestinal disorders a lack of objective biomarkers limits evaluation of underlying mechanisms. We aimed to demonstrate the utility of Magnetic Resonance Imaging (MRI) for this task using psyllium, an effective constip... Read More about Demonstration of differences in colonic volumes, transit, chyme consistency and response to psyllium between healthy and constipated subjects using magnetic resonance imaging.

Spontaneous cortical activity transiently organises into frequency specific phase-coupling networks (2018)
Journal Article

© 2018, The Author(s). Frequency-specific oscillations and phase-coupling of neuronal populations are essential mechanisms for the coordination of activity between brain areas during cognitive tasks. Therefore, the ongoing activity ascribed to the di... Read More about Spontaneous cortical activity transiently organises into frequency specific phase-coupling networks.

Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods (2018)
Journal Article

Two In x Ga1−x N nanorod samples with graded In compositions of x = 0.5–0 (Ga-rich) and x = 0.5–1 (In-rich) grown by molecular beam epitaxy were studied using transmission electron microscopy. The nanorods had a wurtzite crystal structure with growth... Read More about Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods.

Quantum slow relaxation and metastability due to dynamical constraints (2018)
Journal Article

One of the general mechanisms that give rise to the slow cooperative relaxation characteristic of classical glasses is the presence of kinetic constraints in the dynamics. Here we show that dynamical constraints can similarly lead to slow thermalisat... Read More about Quantum slow relaxation and metastability due to dynamical constraints.

A low FODMAP diet is associated with changes in the microbiota and reduction in breath hydrogen but not colonic volume in healthy subjects (2018)
Journal Article

Background & aims Ingestion of poorly digested, fermentable carbohydrates (fermentable oligo-, di-, mono-saccharides and polyols; FODMAPs) have been implicated in exacerbating intestinal symptoms and the reduction of intake with symptom alleviatio... Read More about A low FODMAP diet is associated with changes in the microbiota and reduction in breath hydrogen but not colonic volume in healthy subjects.

Pitfalls of a power-law parametrization of the primordial power spectrum for primordial black hole formation (2018)
Journal Article

Primordial Black Holes (PBHs) can form in the radiation dominated early Universe from the collapse of large density perturbations produced by inflation. A power-law parameterisation of the primordial power spectrum is often used to extrapolate from c... Read More about Pitfalls of a power-law parametrization of the primordial power spectrum for primordial black hole formation.

Gravitational waves from asymmetric oscillon dynamics? (2018)
Journal Article

It has been recently suggested that oscillons produced in the early universe from certain asymmetric potentials continue to emit gravitational waves for a number of e-folds of expansion after their formation, leading to potentially detectable gravita... Read More about Gravitational waves from asymmetric oscillon dynamics?.

Changes in electrophysiological markers of cognitive control after administration of galantamine (2018)
Journal Article

© 2018 The healthy brain is able to maintain a stable balance between bottom-up sensory processing and top-down cognitive control. The neurotransmitter acetylcholine plays a substantial role in this. Disruption of this balance could contribute to sym... Read More about Changes in electrophysiological markers of cognitive control after administration of galantamine.

Cognitive neuroscience using wearable magnetometer arrays: Non-invasive assessment of language function (2018)
Journal Article

Recent work has demonstrated that Optically Pumped Magnetometers (OPMs) can be utilised to create a wearable Magnetoencephalography (MEG) system that is motion robust. In this study, we use this system to map eloquent cortex using a clinically valida... Read More about Cognitive neuroscience using wearable magnetometer arrays: Non-invasive assessment of language function.

Addressing challenges of high spatial resolution, UHF field fMRI for group analysis of higher-order cognitive tasks; an inter-sensory task directing attention between visual and somatosensory domains (2018)
Other

A catalogue of structural and morphological measurements for DES Y1 (2018)
Journal Article

We present a structural and morphological catalogue for 45 million objects selected from the first year data of the Dark Energy Survey (DES). Single Sersic fits and non-parametric measurements are produced for g, r, and i filters. The parameters from... Read More about A catalogue of structural and morphological measurements for DES Y1.

A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography (2018)
Journal Article

Small, commercially-available Optically Pumped Magnetometers (OPMs) can be used to construct a wearable Magnetoencephalography (MEG) system that allows large head movements to be made during recording. The small dynamic range of these sensors however... Read More about A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography.

Optical sectioning in multi-foci Raman hyperspectral imaging (2018)
Journal Article

In this study, we compared the depth-discrimination and speed performance of multi-foci Raman hyperspectral imaging with the reference standard of a single laser point confocal Raman mapping. A liquid crystal spatial light modulator (LC-SLM) was empl... Read More about Optical sectioning in multi-foci Raman hyperspectral imaging.

Dynamical obstruction to perpetual motion from Lorentz-violating black holes (2018)
Journal Article

Black holes in Lorentz-violating theories have been claimed to violate the second law of thermodynamics by perpetual motion energy extraction. We revisit this question for a Penrose splitting process in a spherically symmetric setting with two specie... Read More about Dynamical obstruction to perpetual motion from Lorentz-violating black holes.

Exciton localization and structural disorder of GaAs1?xBix/GaAs quantum wells grown by molecular beam epitaxy on (311)B GaAs substrates (2018)
Journal Article

In this work, we have investigated the structural and optical properties of GaAs(1?x)Bix/GaAs single quantum wells (QWs) grown by molecular beam epitaxy on GaAs (311)B substrates using x-ray diffraction, atomic force microscopy, Fourier-transform Ram... Read More about Exciton localization and structural disorder of GaAs1?xBix/GaAs quantum wells grown by molecular beam epitaxy on (311)B GaAs substrates.

Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models (2018)
Journal Article

We present a comparison of the observed evolving galaxy stellar mass functions with the predictions of eight semi-analytic models and one halo occupation distribution model. While most models are able to fit the data at low redshift, some of them str... Read More about Cosmic CARNage II: the evolution of the galaxy stellar mass function in observations and galaxy formation models.

An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS Field: identifying candidate z∼4.5[CII] emitters (2018)
Journal Article

We report the results of a search for serendipitous [C ii] 157.74 μm emitters at z sime 4.4–4.7 using the Atacama Large Millimeter/submillimeter Array (ALMA). The search exploits the AS2UDS continuum survey, which covers ~50 arcmin2 of the sky toward... Read More about An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS Field: identifying candidate z∼4.5[CII] emitters.