All Outputs (196)

Tunnel spectroscopy of localised electronic states in hexagonal boron nitride (2018)
Journal Article

Hexagonal boron nitride is a large band gap layered crystal, frequently incorporated in van der Waals heterostructures as an insulating or tunnel barrier. Localised states with energies within its band gap can emit visible light, relevant to applicat... Read More about Tunnel spectroscopy of localised electronic states in hexagonal boron nitride.

The Three Hundred Project: the evolution of galaxy cluster density profiles (2018)
Journal Article

Recent numerical studies of the dark matter density profiles of massive galaxy clusters (Mhalo > 1015 M) show that their median radial mass density profile remains unchanged up to z > 1, displaying a highly self-similar evolution. We verify this by u... Read More about The Three Hundred Project: the evolution of galaxy cluster density profiles.

Short-term changes observed in multi-parametric liver MRI following therapy with direct acting antivirals in chronic hepatitis C virus patients (2018)
Journal Article

Methods: We applied multiparametric MRI to assess changes in liver composition, perfusion and blood flow in 17 patients before DAA therapy and after treatment completion (within 12 weeks of last DAA tablet swallowed). Results: We observed changes in... Read More about Short-term changes observed in multi-parametric liver MRI following therapy with direct acting antivirals in chronic hepatitis C virus patients.

Photo-quantum Hall effect and light-induced charge transfer at the interface of graphene/InSe heterostructures (2018)
Journal Article

The transfer of electronic charge across the interface of two van der Waals crystals can underpin the operation of a new class of functional devices. Amongst van der Waals semiconductors, an exciting and rapidly growing development involves the “post... Read More about Photo-quantum Hall effect and light-induced charge transfer at the interface of graphene/InSe heterostructures.

Fast Raman spectral mapping of highly fluorescing samples by time-gated spectral multiplexed detection (2018)
Journal Article

We present a time-gated Raman micro-spectroscopy technique suitable for fast Raman mapping of samples eliciting large laser-induced fluorescence backgrounds. To achieve the required time resolution for effective fluorescence rejection, a picosecond p... Read More about Fast Raman spectral mapping of highly fluorescing samples by time-gated spectral multiplexed detection.

Design and optical characterisation of an efficient light trapping structure for dye-sensitized solar cell integrated windows (2018)
Journal Article

Windows integrated with semi-transparent photovoltaics (PVs) such as Dye-Sensitized Solar Cells (DSSCs) show good potential in improving building performance, in term of providing daylight, reducing unnecessary solar heat gain and also generating ele... Read More about Design and optical characterisation of an efficient light trapping structure for dye-sensitized solar cell integrated windows.

The environments of luminous radio-WISE selected infrared galaxies (2018)
Journal Article

We have observed the environments of a population of 33 heavily dust obscured, ultraluminous, high-redshift galaxies, selected using Wide-Field Infrared Survey Explorer (WISE) and NRAO 1.4 GHz VLA Sky Survey atz > 1.3 with the infrared array camera o... Read More about The environments of luminous radio-WISE selected infrared galaxies.

Galaxy and Mass Assembly (GAMA): Accurate number densities and environments of massive ultra-compact galaxies at 0.02 < z < 0.3 (2018)
Journal Article

Context. Massive ultra-compact galaxies (MUGs) are common at z = 2−3, but very rare in the nearby Universe. Simulations predict that the few surviving MUGs should reside in galaxy clusters, whose large relative velocities prevent them from merging, t... Read More about Galaxy and Mass Assembly (GAMA): Accurate number densities and environments of massive ultra-compact galaxies at 0.02 < z < 0.3.

Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher?order cognitive tasks: An inter?sensory task directing attention between visual and somatosensory domains (2018)
Journal Article

Functional MRI at ultra-high field (UHF, ?7T) provides significant increases in BOLD contrast-to-noise ratio (CNR) compared with conventional field strength (3T), and has been exploited for reduced field-of-view, high spatial resolution mapping of pr... Read More about Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher?order cognitive tasks: An inter?sensory task directing attention between visual and somatosensory domains.

Optical Properties of GaAs1?xBix/GaAs Quantum Well Structures Grown by Molecular Beam Epitaxy on (100) and (311)B GaAs Substrates (2018)
Journal Article

In this work, the electronic bandstructure of GaAs1?xBix/GaAs single quantum well (QW) samples grown by molecular beam epitaxy is investigated by photomodulated reflectance (PR) measurements as a function of Bi content (0.0065 ? x ? 0.0215) and subst... Read More about Optical Properties of GaAs1?xBix/GaAs Quantum Well Structures Grown by Molecular Beam Epitaxy on (100) and (311)B GaAs Substrates.

Higher order clockwork gravity (2018)
Journal Article

We present a higher order generalisation of the clockwork mechanism starting from an underlying non-linear multigravity theory with a single scale and nearest neighbour ghost-free interactions. Without introducing any hierarchies in the underlying po... Read More about Higher order clockwork gravity.

Singularities in large deviations of work in quantum quenches (2018)
Journal Article

We investigate large deviations of the work performed in a quantum quench across two different phases separated by a quantum critical point, using as an example the Dicke model quenched from its superradiant to its normal phase. We extract the distri... Read More about Singularities in large deviations of work in quantum quenches.

Radiative effects on false vacuum decay in Higgs-Yukawa theory (2018)
Journal Article

We derive fermionic Green’s functions in the background of the Euclidean solitons describing false vacuum decay in a prototypal Higgs-Yukawa theory. In combination with appropriate counterterms for the masses, couplings and wave-function normalizatio... Read More about Radiative effects on false vacuum decay in Higgs-Yukawa theory.

Compact star-forming galaxies preferentially quenched to become PSBs in z < 1 clusters (2018)
Journal Article

© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. We analyse the structure of galaxies with high specific star formation rate (SSFR) in cluster and field environments in the redshift range 0.5 < z... Read More about Compact star-forming galaxies preferentially quenched to become PSBs in z < 1 clusters.

Dynamics of many-body quantum synchronisation (2018)
Journal Article

© 2018 The Author(s). The Author(s). Published by IOP Publishing on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. We analyse the properties of the synchronisation transition in a many-body system consisting of quantum va... Read More about Dynamics of many-body quantum synchronisation.

The extended Planetary Nebula Spectrograph (ePN.S) early-type galaxy survey: The kinematic diversity of stellar halos and the relation between halo transition scale and stellar mass (2018)
Journal Article

Context. In the hierarchical two-phase formation scenario, the halos of early type galaxies (ETGs) are expected to have different physical properties from the galaxies’ central regions. Aims. The ePN.S survey characterizes the kinematic properties o... Read More about The extended Planetary Nebula Spectrograph (ePN.S) early-type galaxy survey: The kinematic diversity of stellar halos and the relation between halo transition scale and stellar mass.

Experimental Detection and Control of Trions and Fermi-Edge Singularity in Single-Barrier GaAs/AlAs/GaAs Heterostructures Using Photocapacitance Spectroscopy (2018)
Journal Article

© 2018 American Physical Society. We show how photocapacitance spectra can probe and manipulate two dimensional excitonic complexes and Fermi-edge singularities as a function of applied bias even at a temperature of 100 K. For lower density regimes (... Read More about Experimental Detection and Control of Trions and Fermi-Edge Singularity in Single-Barrier GaAs/AlAs/GaAs Heterostructures Using Photocapacitance Spectroscopy.

Bio-inspired hierarchical designs for stiff, strong interfaces between materials of differing stiffness (2018)
Journal Article

Throughout biology, geometric hierarchy is a recurrent theme in structures where strength is achieved with efficient material usage. Acting over vast timescales, evolution has brought about beautiful solutions to problems of mechanics that are only n... Read More about Bio-inspired hierarchical designs for stiff, strong interfaces between materials of differing stiffness.

The growth and fluorescence of phthalocyanine monolayers, thin films and multilayers on hexagonal boron nitride (2018)
Journal Article

Free-base phthalocyanine forms distinct interfacial phases and thin films on hexagonal boron nitride including a monolayer arrangement as determined using high resolution atomic force microscopy. The phases reveal significant differences in photolumi... Read More about The growth and fluorescence of phthalocyanine monolayers, thin films and multilayers on hexagonal boron nitride.

Effect of indium doping on the electrical and structural properties of TiO2 thin films used in MOS devices (2018)
Journal Article

We investigated the effect of Indium (In) doping on the structural and electrical properties of Ti/Au/ TiO2:In/n-Si metal-oxide-semiconductor (MOS) devices. Sputtering grown TiO2 thin films on Si substrate were doped using two In-films with 15 nm and... Read More about Effect of indium doping on the electrical and structural properties of TiO2 thin films used in MOS devices.