All Outputs (2110)

Benchtop magnetic shielding for benchmarking atomic magnetometers (2023)
Journal Article
Hobson, P. J., Holmes, N., Patel, P., Styles, B., Chalmers, J., Morley, C., …Fromhold, M. (2023). Benchtop magnetic shielding for benchmarking atomic magnetometers. IEEE Transactions on Instrumentation and Measurement, 72, Article 6007309. https://doi.org/10.1109/tim.2023.3293540

Here, a benchtop hybrid magnetic shield containing four mumetal cylinders and nine internal flexible printed circuit boards is designed, constructed, tested, and operated. The shield is designed specifically as a test-bed for building and operating u... Read More about Benchtop magnetic shielding for benchmarking atomic magnetometers.

High-Fidelity Interconversion between Greenberger-Horne-Zeilinger and W States through Floquet-Lindblad Engineering in Rydberg Atom Arrays (2023)
Journal Article
Shao, X. Q., Liu, F., Xue, X. W., Mu, W. L., & Li, W. (2023). High-Fidelity Interconversion between Greenberger-Horne-Zeilinger and W States through Floquet-Lindblad Engineering in Rydberg Atom Arrays. Physical Review Applied, 20(1), https://doi.org/10.1103/PhysRevApplied.20.014014

Greenberger-Horne-Zeilinger and W states feature genuine tripartite entanglement that cannot be converted into each other by local operations and classical communication. Here, we present a dissipative protocol for deterministic interconversion betwe... Read More about High-Fidelity Interconversion between Greenberger-Horne-Zeilinger and W States through Floquet-Lindblad Engineering in Rydberg Atom Arrays.

Modelling uncertainties in wide binary constraints on primordial black holes (2023)
Journal Article
Tyler, E., Green, A. M., & Goodwin, S. P. (2023). Modelling uncertainties in wide binary constraints on primordial black holes. Monthly Notices of the Royal Astronomical Society, 524(2), 3052–3059. https://doi.org/10.1093/mnras/stad2028

Dark matter in the form of compact objects with mass Mco ≳ 10 M⊙ can be constrained by its dynamical effects on wide binary stars. Motivated by the recent interest in primordial black hole dark matter, we revisit the theoretical modelling involved in... Read More about Modelling uncertainties in wide binary constraints on primordial black holes.

Optical response of green synthesized thin Cr2O3 films prepared via drop and spin coatings (2023)
Journal Article
Tsegay, M., Gebretinsae, H., Welegergs, G., Azizi, S., Seopela, M., Henini, M., …Nuru, Z. (2023). Optical response of green synthesized thin Cr2O3 films prepared via drop and spin coatings. Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2023.06.225

This study investigated the impact of optical bandgap energy on the optical constants of Cr2O3 thin films, which were prepared via green synthesis method and deposited using drop and spin-coatings at 600, 800, 1000, and 1200 rpm onto Cu substrates. T... Read More about Optical response of green synthesized thin Cr2O3 films prepared via drop and spin coatings.

Adsorption structure of iron phthalocyanine and titanyl phthalocyanine on Cu(1 1 1) (2023)
Journal Article
Stoodley, M. A., Klein, B. P., Clarke, M., Williams, L. B., Rochford, L. A., Ferrer, P., …Duncan, D. A. (2023). Adsorption structure of iron phthalocyanine and titanyl phthalocyanine on Cu(1 1 1). Inorganica Chimica Acta, 557, Article 121679. https://doi.org/10.1016/j.ica.2023.121679

The adsorption structure of iron phthalocyanine (FePc) and titanyl phthalocyanine (TiOPc) was studied by a combination of near edge X-ray absorption fine structure (NEXAFS) spectroscopy and normal incidence X-ray standing waves (NIXSW) technique. The... Read More about Adsorption structure of iron phthalocyanine and titanyl phthalocyanine on Cu(1 1 1).

An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts (2023)
Journal Article
Holmes, N., Bowtell, R., Brookes, M. J., & Taulu, S. (2023). An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts. Sensors, 23(14), Article 6537. https://doi.org/10.3390/s23146537

The signal space separation (SSS) method is routinely employed in the analysis of multichannel magnetic field recordings (such as magnetoencephalography (MEG) data). In the SSS method, signal vectors are posed as a multipole expansion of the magnetic... Read More about An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts.

Clockwork cosmology (2023)
Journal Article
Wood, K., Saffin, P. M., & Avgoustidis, A. (2023). Clockwork cosmology. Journal of Cosmology and Astroparticle Physics, 2023(07), Article 062. https://doi.org/10.1088/1475-7516/2023/07/062

The higher order generalisation of the clockwork mechanism to gravitational interactions provides a means to generate an exponentially suppressed coupling to matter from a fundamental theory of multiple interacting gravitons, without introducing larg... Read More about Clockwork cosmology.

The graviton four-point function in de Sitter space (2023)
Journal Article
Bonifacio, J., Goodhew, H., Joyce, A., Pajer, E., & Stefanyszyn, D. (2023). The graviton four-point function in de Sitter space. Journal of High Energy Physics, 2023(6), Article 212. https://doi.org/10.1007/jhep06%282023%29212

We compute the tree-level late-time graviton four-point correlation function, and the related quartic wavefunction coefficient, for Einstein gravity in de Sitter spacetime. We derive this result in several ways: by direct calculation, using the in-in... Read More about The graviton four-point function in de Sitter space.

Graphene nanoribbons with hBN passivated edges grown by high-temperature molecular beam epitaxy (2023)
Journal Article
Bradford, J., Cheng, T. S., James, T. S., Khlobystov, A. N., Mellor, C. J., Watanabe, K., …Beton, P. H. (2023). Graphene nanoribbons with hBN passivated edges grown by high-temperature molecular beam epitaxy. 2D Materials, 10(3), Article 035035. https://doi.org/10.1088/2053-1583/acdefc

Integration of graphene and hexagonal boron nitride (hBN) in lateral heterostructures has provided a route to broadly engineer the material properties by quantum confinement of electrons or introduction of novel electronic and magnetic states at the... Read More about Graphene nanoribbons with hBN passivated edges grown by high-temperature molecular beam epitaxy.

Direct synthesis of sodium doped Cu2O/GO nanocomposites for catalytic hydrogen production from NaBH4 (2023)
Journal Article
Alshammari, K., Alhassan, S., Alshammari, A. H., Alotaibi, T., Alshammari, M., Taha, T. A. M., …Henini, M. (2023). Direct synthesis of sodium doped Cu2O/GO nanocomposites for catalytic hydrogen production from NaBH4. Diamond and Related Materials, 137, Article 110148. https://doi.org/10.1016/j.diamond.2023.110148

In this work, Cu2O/GO doped Na nanocomposites were prepared via sol-gel auto-combustion procedure. The material structure was analysed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and environmental scanning electron m... Read More about Direct synthesis of sodium doped Cu2O/GO nanocomposites for catalytic hydrogen production from NaBH4.

On the nature of majority and minority traps in β-Ga2O3: A review (2023)
Journal Article
Madani, L., Nouredine, S., Prasad, C. V., Mohamed, H., & Rim, Y. S. (2023). On the nature of majority and minority traps in β-Ga2O3: A review. Materials Today Physics, 36, Article 101155. https://doi.org/10.1016/j.mtphys.2023.101155

In the last decade, researchers and commercial companies have paid great attention to ultrawide bandgap semiconductors especially gallium oxide (Ga2O3). Ga2O3 has very interesting properties such as a bandgap higher than 4.8 eV, high electrical break... Read More about On the nature of majority and minority traps in β-Ga2O3: A review.

Controllable bistability and squeezing of confined polariton dark solitons (2023)
Journal Article
Wang, G., Hou, K., Liu, Y., Bi, H., Li, W., & Xue, Y. (2023). Controllable bistability and squeezing of confined polariton dark solitons. Optics Express, 31(14), 22722-22732. https://doi.org/10.1364/oe.493274

The generation of squeezed light in semiconductor materials opens opportunities for building on-chip devices that are operated at the quantum level. Here we study theoretically a squeezed light source of polariton dark solitons confined in a geometri... Read More about Controllable bistability and squeezing of confined polariton dark solitons.

Determination of electronic band structure of quaternary ferromagnetic Ga0.97- y Mn0.03CryAs epitaxial layers (2023)
Journal Article
Donmez, O., Gunes, M., Henini, M., & Erol, A. (2023). Determination of electronic band structure of quaternary ferromagnetic Ga0.97- y Mn0.03CryAs epitaxial layers. Physica B: Condensed Matter, 665, Article 415074. https://doi.org/10.1016/j.physb.2023.415074

Introducing transition metals to conventional III-V semiconductors anomalously changes their fundamental characteristics, such as electronic, magnetic, and structural properties. In this study, we show that the valence band anti-cro... Read More about Determination of electronic band structure of quaternary ferromagnetic Ga0.97- y Mn0.03CryAs epitaxial layers.

Alignment-Based Optically Pumped Magnetometer Using a Buffer-Gas Cell (2023)
Journal Article
Rushton, L. M., Elson, L., Meraki, A., & Jensen, K. (2023). Alignment-Based Optically Pumped Magnetometer Using a Buffer-Gas Cell. Physical Review Applied, 19(6), Article 064047. https://doi.org/10.1103/PhysRevApplied.19.064047

Alignment-based optically pumped magnetometers (OPMs) are capable of measuring oscillating magnetic fields with high sensitivity in the fT/Hz range. Until now, alignment-based magnetometers have only used paraffin-coated vapour cells to extend the sp... Read More about Alignment-Based Optically Pumped Magnetometer Using a Buffer-Gas Cell.

Acoustic band engineering in terahertz quantum-cascade lasers and arbitrary superlattices (2023)
Journal Article
Demić, A., Valavanis, A., Dean, P., Li, L., Davies, A. G., Linfield, E. H., …Harrison, P. (2023). Acoustic band engineering in terahertz quantum-cascade lasers and arbitrary superlattices. Physical Review B, 107(23), Article 235411. https://doi.org/10.1103/physrevb.107.235411

We present theoretical methods for the analysis of acoustic phonon modes in superlattice structures, and terahertz-frequency quantum-cascade lasers (THz QCLs). Our generalized numerical solution of the acoustic-wave equation provides good agreement w... Read More about Acoustic band engineering in terahertz quantum-cascade lasers and arbitrary superlattices.

Emerging Spintronic Materials and Functionalities (2023)
Journal Article
Guo, L., Hu, S., Gu, X., Zhang, R., Wang, K., Yan, W., & Sun, X. (2023). Emerging Spintronic Materials and Functionalities. Advanced Materials, Article 2301854. https://doi.org/10.1002/adma.202301854

The explosive growth of the information era has put forward urgent requirements for ultra-high-speed and extremely efficient computations. In direct contrary to charge-based computations, spintronics aims to use spins as information carriers for data... Read More about Emerging Spintronic Materials and Functionalities.

Naturalistic Hyperscanning with Wearable Magnetoencephalography (2023)
Journal Article
Holmes, N., Rea, M., Hill, R. M., Boto, E., Leggett, J., Edwards, L. J., …Bowtell, R. (2023). Naturalistic Hyperscanning with Wearable Magnetoencephalography. Sensors, 23(12), Article 5454. https://doi.org/10.3390/s23125454

The evolution of human cognitive function is reliant on complex social interactions which form the behavioural foundation of who we are. These social capacities are subject to dramatic change in disease and injury; yet their supporting neural substra... Read More about Naturalistic Hyperscanning with Wearable Magnetoencephalography.

Investigation of deep defects and their effects on the properties of NiO/β-Ga2O3 heterojuncion diodes (2023)
Journal Article
Almalki, A., Madani, L., Sengouga, N., Alhassan, S., Alotaibi, S., Alhassni, A., …Zhang, Y. (2023). Investigation of deep defects and their effects on the properties of NiO/β-Ga2O3 heterojuncion diodes. Materials Today Electronics, 4, Article 100042. https://doi.org/10.1016/j.mtelec.2023.100042

In this study, the effect of rapid thermal annealing (RTA) on the electrical and optical properties of NiO/ β-Ga2O3 heterojunction diodes was investigated using capacitance-voltage, current-voltage, Deep Level Transient Spectroscopy (DLTS), Laplace D... Read More about Investigation of deep defects and their effects on the properties of NiO/β-Ga2O3 heterojuncion diodes.

The impact of human expert visual inspection on the discovery of strong gravitational lenses (2023)
Journal Article
Rojas, K., Collett, T. E., Ballard, D., Magee, M. R., Birrer, S., Buckley-Geer, E., …Levine, B. C. (2023). The impact of human expert visual inspection on the discovery of strong gravitational lenses. Monthly Notices of the Royal Astronomical Society, 523(3), 4413–4430. https://doi.org/10.1093/mnras/stad1680

We investigate the ability of human 'expert' classifiers to identify strong gravitational lens candidates in Dark Energy Survey like imaging. We recruited a total of 55 people that completed more than 25 per cent of the project. During the classifica... Read More about The impact of human expert visual inspection on the discovery of strong gravitational lenses.

Performance of non-invasive tests and histology for the prediction of clinical outcomes in patients with non-alcoholic fatty liver disease: an individual participant data meta-analysis (2023)
Journal Article
Mózes, F. E., Lee, J. A., Vali, Y., Alzoubi, O., Staufer, K., Trauner, M., …Hytiroglou, P. (2023). Performance of non-invasive tests and histology for the prediction of clinical outcomes in patients with non-alcoholic fatty liver disease: an individual participant data meta-analysis. Lancet Gastroenterology and Hepatology, 8(8), 704-713. https://doi.org/10.1016/S2468-1253%2823%2900141-3

Background Histologically assessed liver fibrosis stage has prognostic significance in patients with non-alcoholic fatty liver disease (NAFLD) and is accepted as a surrogate endpoint in clinical trials for non-cirrhotic NAFLD. Our aim was to compare... Read More about Performance of non-invasive tests and histology for the prediction of clinical outcomes in patients with non-alcoholic fatty liver disease: an individual participant data meta-analysis.