Band gap bowing in NixMg1-xO.

Epitaxial transparent oxide NixMg1-xO (0 ≤ x ≤ 1) thin films were grown on MgO(100) substrates by pulsed laser deposition. High-resolution synchrotron X-ray diffraction and high-resolution transmission electron microscopy analysis indicate that the thin films are compositionally and structurally homogeneous, forming a completely miscible solid solution. Nevertheless, the composition dependence of the NixMg1-xO optical band gap shows a strong non-parabolic bowing with a discontinuity at dilute NiO concentrations of x  0.074 and account for the anomalously large band gap narrowing in the NixMg1-xO solid solution system

The study of atmospheric ice-nucleating particles via microfluidically generated droplets

Ice-nucleating particles (INPs) play a significant role in the climate and hydrological cycle by triggering ice formation in supercooled clouds, thereby causing precipitation and affecting cloud lifetimes and their radiative properties. However, despite their importance, INP often comprise only 1 in 10³–10⁶ ambient particles, making it difficult to ascertain and predict their type, source, and concentration. The typical techniques for quantifying INP concentrations tend to be highly labour-intensive, suffer from poor time resolution, or are limited in sensitivity to low concentrations. Here, we present the application of microfluidic devices to the study of atmospheric INPs via the simple and rapid production of monodisperse droplets and their subsequent freezing on a cold stage. This device offers the potential for the testing of INP concentrations in aqueous samples with high sensitivity and high counting statistics. Various INPs were tested for validation of the platform, including mineral dust and biological species, with results compared to literature values. We also describe a methodology for sampling atmospheric aerosol in a manner that minimises sampling biases and which is compatible with the microfluidic device. We present results for INP concentrations in air sampled during two field campaigns: (1) from a rural location in the UK and (2) during the UK’s annual Bonfire Night festival. These initial results will provide a route for deployment of the microfluidic platform for the study and quantification of INPs in upcoming field campaigns around the globe, while providing a benchmark for future lab-on-a-chip-based INP studies

Large-eddy simulation of trans-and supercritical injection

Aerodynamic

Oxygen vacancy-assisted recovery process for increasing electron mobility in n-type BaSnO3 epitaxial thin films

The scattering of charge carriers with line defects, i.e., threading dislocations, needs to be decreased to further enhance electron mobility of lattice-mismatched epitaxial films and heterostructures for the application of high-performance electronic devices. Here, we report a strategy to post-treat epitaxial La-doped BaSnO3 films by delicately controlling oxygen partial pressure p(O2), which achieved significant increase in room temperature electron mobility to 122 cm2∙V−1∙s−1. This mobility enhancement is attributed to an oxygen vacancy-assisted recovery process that reduces the density of dislocations by accelerating the movement of dislocations in ionic crystals under p(O2)-controlled treatment, despite an increase in the density of charged point defects

T cell costimulation blockade blunts pressure overload-induced heart failure

18nonenoneKallikourdis, Marinos; Martini, Elisa; Carullo, Pierluigi; Sardi, Claudia; Roselli, Giuliana; Greco, Carolina M.; Vignali, Debora; Riva, Federica; Ormbostad Berre, Anne Marie; Stølen, Tomas O.; Fumero, Andrea; Faggian, Giuseppe; Di Pasquale, Elisa; Elia, Leonardo; Rumio, Cristiano; Catalucci, Daniele; Papait, Roberto; Condorelli, GianluigiKallikourdis, Marinos; Martini, Elisa; Carullo, Pierluigi; Sardi, Claudia; Roselli, Giuliana; Greco, Carolina M.; Vignali, Debora; Riva, Federica; Ormbostad Berre, Anne Marie; Stølen, Tomas O.; Fumero, Andrea; Faggian, Giuseppe; Di Pasquale, Elisa; Elia, Leonardo; Rumio, Cristiano; Catalucci, Daniele; Papait, Roberto; Condorelli, Gianluig