Skip to main content

Research Repository

Advanced Search

All Outputs (2097)

New insights into the role of AGNs in forming the cluster red sequence (2024)
Journal Article
Shimakawa, R., Pérez-Martínez, J. M., Koyama, Y., Tanaka, M., Tanaka, I., Kodama, T., …Kurk, J. D. (2024). New insights into the role of AGNs in forming the cluster red sequence. Monthly Notices of the Royal Astronomical Society, 528(2), 3679–3695. https://doi.org/10.1093/mnras/stae118

As a considerable investment of time from various telescope facilities was dedicated toward studying the Spiderweb protocluster at z = 2.2, it so far remains one of the most extensively studied protocluster. We report here the latest results in this... Read More about New insights into the role of AGNs in forming the cluster red sequence.

Perturbative effective field theory expansions for cosmological phase transitions (2024)
Journal Article
Gould, O., & Tenkanen, T. V. I. (2024). Perturbative effective field theory expansions for cosmological phase transitions. Journal of High Energy Physics, 2024, Article 48. https://doi.org/10.1007/JHEP01%282024%29048

Guided by previous non-perturbative lattice simulations of a two-step electroweak phase transition, we reformulate the perturbative analysis of equilibrium thermodynamics for generic cosmological phase transitions in terms of effective field theory (... Read More about Perturbative effective field theory expansions for cosmological phase transitions.

Colon length in pediatric health and constipation measured using magnetic resonance imaging and three dimensional skeletonization (2024)
Journal Article
Sharif, H., Hoad, C. L., Abrehart, N., Gowland, P. A., Spiller, R. C., Kirkham, S., …Marciani, L. (2024). Colon length in pediatric health and constipation measured using magnetic resonance imaging and three dimensional skeletonization. PLoS ONE, 19(1), Article e0296311. https://doi.org/10.1371/journal.pone.0296311

Recent magnetic resonance imaging (MRI) studies showed that colonic volumes in children are different between health and functional constipation. The length of the colon has however been rarely measured and principally using unphysiological colon pre... Read More about Colon length in pediatric health and constipation measured using magnetic resonance imaging and three dimensional skeletonization.

Cathodoluminescence spectroscopy of monolayer hexagonal boron nitride (2024)
Journal Article
Shima, K., Cheng, T. S., Mellor, C. J., Beton, P. H., Elias, C., Valvin, P., …Chichibu, S. F. (2024). Cathodoluminescence spectroscopy of monolayer hexagonal boron nitride. Scientific Reports, 14(1), Article 169. https://doi.org/10.1038/s41598-023-50502-9

Cathodoluminescence (CL) spectroscopy is a suitable technique for studying the luminescent properties of optoelectronic materials because CL has no limitation on the excitable bandgap energy and eliminates ambiguous signals due to simple light scatte... Read More about Cathodoluminescence spectroscopy of monolayer hexagonal boron nitride.

Rejection-free quantum Monte Carlo in continuous time from transition path sampling (2024)
Journal Article
Causer, L., Sfairopoulos, K., Mair, J. F., & Garrahan, J. P. (2024). Rejection-free quantum Monte Carlo in continuous time from transition path sampling. Physical Review B, 109(2), Article 024307. https://doi.org/10.1103/physrevb.109.024307

Continuous-time quantum Monte Carlo refers to a class of algorithms designed to sample the thermal distribution of a quantum Hamiltonian through exact expansions of the Boltzmann exponential in terms of stochastic trajectories which are periodic in i... Read More about Rejection-free quantum Monte Carlo in continuous time from transition path sampling.

Designing Optimal Loop, Saddle, and Ellipse-Based Magnetic Coils by Spherical Harmonic Mapping (2023)
Journal Article
Hobson, P. J., Hardwicke, N. L., Davis, A., Smith, T. X., Morley, C., Packer, M., …Fromhold, M. (2023). Designing Optimal Loop, Saddle, and Ellipse-Based Magnetic Coils by Spherical Harmonic Mapping. IEEE Transactions on Instrumentation and Measurement, 72, Article 1005815. https://doi.org/10.1109/TIM.2023.3284138

Adaptable, low-cost, coils designed by carefully selecting the arrangements and geometries of simple primitive units are used to generate magnetic fields for diverse applications. These extend from magnetic resonance and fundamental physics experimen... Read More about Designing Optimal Loop, Saddle, and Ellipse-Based Magnetic Coils by Spherical Harmonic Mapping.

Higgs-induced screening mechanisms in scalar-tensor theories (2023)
Journal Article
Burrage, C., & Millington, P. (2024). Higgs-induced screening mechanisms in scalar-tensor theories. Annals of the New York Academy of Sciences, 1531(1), 95-103. https://doi.org/10.1111/nyas.15092

We consider the theory of a light conformally coupled scalar field, that is, one that is coupled directly to the Ricci scalar of the gravitational sector. This theory can be written equivalently as one of a light scalar that is coupled to the Standar... Read More about Higgs-induced screening mechanisms in scalar-tensor theories.

Processing of new efficient Cr1-xNaxO3 catalysts for sodium borohydride methanolysis (2023)
Journal Article
Alshammari, K., Alhassan, S., Alshammari, M., Alshammari, A. H., Alotaibi, T., Mohaymen Taha, T. A., & Henini, M. (2024). Processing of new efficient Cr1-xNaxO3 catalysts for sodium borohydride methanolysis. International Journal of Hydrogen Energy, 53, 698-705. https://doi.org/10.1016/j.ijhydene.2023.12.078

This study reports the development of a novel Cr1-xNaxO3 catalyst using a simple cost-effective method for hydrogen production from NaBH4 methanolysis. The properties of the nanocomposites were investigated by employing XRD, FTIR, SEM and XPS charact... Read More about Processing of new efficient Cr1-xNaxO3 catalysts for sodium borohydride methanolysis.

Hole diffusion effect on the minority trap detection and non-ideal behavior of NiO/β-Ga2O3 heterojunction (2023)
Journal Article
Labed, M., Alotaibi, S., Min, J. Y., Almalki, A., Henini, M., & Rim, Y. S. (2023). Hole diffusion effect on the minority trap detection and non-ideal behavior of NiO/β-Ga2O3 heterojunction. Applied Physics Letters, 123(25), Article 253504. https://doi.org/10.1063/5.0180427

A NiO/β-Ga2O3 heterojunction was fabricated by sputtering a highly p-doped NiO layer onto β-Ga2O3. This heterojunction showed a low leakage current and a high turn-on voltage (Von) compared to a Ni/β-Ga2O3 Schottky barrier diode. The extracted Von fr... Read More about Hole diffusion effect on the minority trap detection and non-ideal behavior of NiO/β-Ga2O3 heterojunction.

Entangled time-crystal phase in an open quantum light-matter system (2023)
Journal Article
Mattes, R., Lesanovsky, I., & Carollo, F. (2023). Entangled time-crystal phase in an open quantum light-matter system. Physical Review A, 108(6), Article 062216. https://doi.org/10.1103/physreva.108.062216

Time crystals are nonequilibrium many-body phases in which the state of the system dynamically approaches a limit cycle. While these phases have recently been the focus of intensive research, it is still far from clear whether they can host quantum c... Read More about Entangled time-crystal phase in an open quantum light-matter system.

Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material (2023)
Conference Proceeding
Jaafar, A. H., & Kemp, N. T. (2023). Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material. In NANOARCH '23: Proceedings of the 18th ACM International Symposium on Nanoscale Architectures. https://doi.org/10.1145/3611315.3633257

Controlling of resistive switching properties by optical means opens the route to new optoelectronics that can be written optically and read electronically. In this work, we demonstrate optically controlled memristors realized with a hybrid material... Read More about Optically Controlled Memristor Using Hybrid ZnO Nanorod/Polymer Material.

Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots (2023)
Conference Proceeding
Gater, M., Adawi, A., & Kemp, N. (2023). Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots. In NANOARCH '23: Proceedings of the 18th ACM International Symposium on Nanoscale Architectures. https://doi.org/10.1145/3611315.3633275

We report on the electrical effects of single and double polymer (polymethacrylate) barriers on polyethylene oxide (PEO) based memristors. The single barrier device with an active layer embedded with WS2 quantum dots is also investigated. The additio... Read More about Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots.

On-chip phonon-magnon reservoir for neuromorphic computing (2023)
Journal Article
Yaremkevich, D. D., Scherbakov, A. V., De Clerk, L., Kukhtaruk, S. M., Nadzeyka, A., Campion, R., …Bayer, M. (2023). On-chip phonon-magnon reservoir for neuromorphic computing. Nature Communications, 14(1), Article 8296. https://doi.org/10.1038/s41467-023-43891-y

Reservoir computing is a concept involving mapping signals onto a high-dimensional phase space of a dynamical system called “reservoir” for subsequent recognition by an artificial neural network. We implement this concept in a nanodevice consisting o... Read More about On-chip phonon-magnon reservoir for neuromorphic computing.

Ex vivo assessment of basal cell carcinoma surgical margins in Mohs surgery by autofluorescence‐Raman spectroscopy: A pilot study (2023)
Journal Article
Boitor, R., Varma, S., Sharma, A., Elsheikh, S., Kulkarni, K., Eldib, K., …Notingher, I. (2023). Ex vivo assessment of basal cell carcinoma surgical margins in Mohs surgery by autofluorescence‐Raman spectroscopy: A pilot study. JEADV Clinical Practice, https://doi.org/10.1002/jvc2.336

Background: Autofluorescence (AF)‐Raman spectroscopy is a technology that can detect tumour tissue in surgically excised skin specimens. The technique does not require tissue fixation, staining, labelling or sectioning, and provides quantitative diag... Read More about Ex vivo assessment of basal cell carcinoma surgical margins in Mohs surgery by autofluorescence‐Raman spectroscopy: A pilot study.

BubbleDet: a Python package to compute functional determinants for bubble nucleation (2023)
Journal Article
Ekstedt, A., Gould, O., & Hirvonen, J. (2023). BubbleDet: a Python package to compute functional determinants for bubble nucleation. Journal of High Energy Physics, 2023(12), Article 56. https://doi.org/10.1007/jhep12%282023%29056

We present a Python package BubbleDet for computing one-loop functional determinants around spherically symmetric background fields. This gives the next-to-leading order correction to both the vacuum decay rate, at zero temperature, and to the bubble... Read More about BubbleDet: a Python package to compute functional determinants for bubble nucleation.

Higher orders for cosmological phase transitions: a global study in a Yukawa model (2023)
Journal Article
Gould, O., & Xie, C. (2023). Higher orders for cosmological phase transitions: a global study in a Yukawa model. Journal of High Energy Physics, 2023(12), Article 49. https://doi.org/10.1007/jhep12%282023%29049

We perform a state-of-the-art global study of the cosmological thermal histories of a simple Yukawa model, and find higher perturbative orders to be important for determining both the presence and strength of strong first-order phase transitions. Usi... Read More about Higher orders for cosmological phase transitions: a global study in a Yukawa model.

An examination of resting-state functional connectivity in patients with active Crohn’s disease (2023)
Journal Article
Thapaliya, G., Eldeghaidy, S., Radford, S. J., Francis, S. T., & Moran, G. W. (in press). An examination of resting-state functional connectivity in patients with active Crohn’s disease. Frontiers in Neuroscience, 17, Article 1265815. https://doi.org/10.3389/fnins.2023.1265815

Background: Alterations in resting state functional connectivity (rs-FC) in Crohn’s Disease (CD) have been documented in default mode network (DMN) and frontal parietal network (FPN) areas, visual, cerebellar, salience and attention resting-state-net... Read More about An examination of resting-state functional connectivity in patients with active Crohn’s disease.

The stellar mass function of quiescent galaxies in 2 < z < 2.5 protoclusters (2023)
Journal Article
Edward, A. H., Balogh, M. L., Bahé, Y. M., Cooper, M. C., Hatch, N. A., Marchioni, J., …Xie, L. (2024). The stellar mass function of quiescent galaxies in 2 < z < 2.5 protoclusters. Monthly Notices of the Royal Astronomical Society, 527(3), 8598–8617. https://doi.org/10.1093/mnras/stad3751

We present an analysis of the galaxy stellar mass function (SMF) of 14 known protoclusters between 2.0 < z < 2.5 in the COSMOS field, down to a mass limit of 10 9.5 M⊙. We use existing photometric redshifts with a statistical background subtraction,... Read More about The stellar mass function of quiescent galaxies in 2 < z < 2.5 protoclusters.

An examination of resting-state functional connectivity in patients with active Crohn's disease (2023)
Journal Article
Francis, S. T., Moran, G. W., Eldeghaidy, S., Radford, S., & Thapaliya, G. (2023). An examination of resting-state functional connectivity in patients with active Crohn's disease. Frontiers in Neuroscience, 17, Article 1265815. https://doi.org/10.3389/fnins.2023.1265815

Background: Alterations in resting state functional connectivity (rs-FC) in Crohn’s Disease (CD) have been documented in default mode network (DMN) and frontal parietal network (FPN) areas, visual, cerebellar, salience and attention resting-state-net... Read More about An examination of resting-state functional connectivity in patients with active Crohn's disease.