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Some early-career researchers report feeling pressure to use animal models to meet journal and grant requirements, even in disciplines and projects that don’t require them.
A process based on perovskite semiconductors is described to downscale micro-LEDs and nano-LEDs to below the conventional size limits, demonstrating average external quantum efficiencies maintained at around 20% across a wide range of pixel lengths.
Itinerant magnetism in rhombohedral multilayer graphene shows a large excess entropy from magnetic fluctuations above its critical temperature—typically only associated with local moments—which implies the decoupling of charge and isospin degrees of freedom, and results in the isospin Pomeranchuk effect.
Under field conditions, acquisitive tree species generally grow slowly, whereas conservative species show generally higher realized growth, owing to their ability to tolerate unfavourable environmental conditions.
Mandimycin, a polyene macrolide, exhibits strong antifungal activity and possesses a mode of action that is distinct from other compounds of this class.
Germinal centre B cells modify their mutation rate to preserve high-affinity receptors, thereby safeguarding high-affinity B cell lineages and enhancing the outcomes of antibody affinity maturation.
Spontaneous parametric down-conversion was used to generate narrowband photon pairs with a high spectral brightness in a high-Q silicon nitride microresonator.
Using advanced brain-recording techniques, parrots were found to have a brain organization for vocal control similar to humans, making them an important model for studying speech and for developing potential treatments for communication disorders.
In mice, learning and performance on an auditory task is driven by higher-order signals in the auditory cortex that are no longer required when the mouse has achieved expert-level performance.
High spatiotemporal precision tracking using 3D MINFLUX shows that nuclear import and export occur in overlapping regions of the central pore, providing insight into transport across the nuclear pore complex.
Cryo-electron microscopy structures of DNA helicases in various conformations provide insight into an ATP-hydrolysis-dependent ‘entropy switch’ that drives unwinding of DNA for replication, with probable conservation across viral and eukaryotic systems.
Raman spectroscopy measurements of water at the interface with oil droplets show a perturbed hydrogen-bond network and evidence for a strong interfacial electric field.
