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Crystalline materials for optical applications are synthesized in living dinoflagellates.

Applications of optical laser-based techniques are limited by the long wavelengths of the lasers. Now, observations of phonons and thermal transport at nanometre length scales are reported with an all-hard X-ray transient-grating spectroscopy technique.

Conventional type 1 dendritic cells (cDC1) can boost the precursor exhausted T cell population thought to be essential for efficacy of immune checkpoint therapy. Here the authors enhance this cellular network using Flt3L to expand cDC1s and then map the movement of T cells and DCs between tumors and lymph nodes.

A recently discovered high-mass X-ray binary has an evolutionary history showing the neutron star component formed during an ultra-stripped supernova, and has orbital elements that should allow for forming a binary neutron star in the future.

Observations of a fast X-ray transient reveal that it is a gamma-ray-burst explosion from a very distant galaxy that emits light with the wavelength necessary to drive cosmic reionization, the last major phase change in the history of the Universe.

Pseudaminic acids (Pse) are a family of carbohydrates found within bacterial lipopolysaccharides, capsular polysaccharides and glycoproteins. Now, monoclonal antibodies have been developed that recognize diverse Pse across several bacterial species, enabling mapping of the Pse glycoproteome and demonstrating therapeutic potential against multidrug-resistant Acinetobacter baumanii in in vitro and in vivo infection models.

Tunable polarization control and a two-colour X-ray pump–X-ray probe operating mode are demonstrated at the Linac Coherent Light Source (LCLS).

Amorphous phases in alkali-activated slag cement are explored using spatially resolved synchrotron X-ray techniques. Local atomic structures of individual phases show the impact of magnesium content on resistance to CO₂-induced degradation.

Nylon-11 is a common and durable polymer but possess low piezoelectric properties. Here, the authors use mechanical accelerations and strong electric fields to induce crystallization, hydrogen-bonding and dipole alignment in Nylon-11 films, achieving high piezoelectricity.

One of three back-to-back papers to show dosage of BACH2 can modulate T cell differentiation and function and how we might apply this to enhance chimeric antigen receptor T cell therapies for cancer.

Transcription factor osr2 is identified as a specific marker and regulator of mural lymphatic endothelial cell (muLEC) differentiation and maintenance, and muLECs and border-associated macrophages share functional analogies but are not homologous, providing an example of convergent evolution.

Angle-resolved photoemission spectroscopy is possibly the most widely used technique to probe the electronic structure of crystals. Unfortunately the technique is usually too sensitive to surface properties. It is now demonstrated that by using hard X-rays as the incident radiation it is possible to probe the electronic structure in the bulk.

The authors find that distinct radial glia subtypes generate and support midbrain dopaminergic neurons, revealing specialized function and lineage relationships among the diverse cell types that shape dopamine neuron development.

Polymer thin films that emit and absorb circularly polarised light are promising in achieving important technological advances, but the origin of the large chiroptical effects in such films has remained elusive. Here the authors demonstrate that in non-aligned polymer thin films, large chiroptical effects are caused by magneto-electric coupling, not structural chirality as previously assumed.

Taveneau et al. leverage artificial-intelligence-driven protein design to create inhibitors that control RNA-targeting enzymes in cells, revealing a strategy to rapidly design off-switches for RNA-editing systems.

Time-resolved measurements of the X-ray photoemission delay of core-level electrons using attosecond soft X-ray pulses from a free-electron laser can be used to determine the complex correlated dynamics of photoionization.

In time-resolved measurements it is crucial to know the time delay between the exciting and probing light pulses. Here the authors demonstrate a self-referencing common-path interferometer method measuring the arrival time between the X-ray free electron laser and the optical pulse to the target and thus their inherent timing jitter.

Diffraction-before-destruction of ultrashort X-ray pulses can visualize non-equilibrium processes at the nanoscale with sub-femtosecond precision. Here, the authors demonstrate how the brightness and the spatial resolution of such snapshots can be substantially increased despite ionization.

High-resolution flare footpoint observations in the extreme ultraviolet and X-rays were taken by Solar Orbiter. Combined with simulations, the results reveal that the dominant mechanism carrying flare energy through the Sun’s atmosphere can vary on small spatial scales.

There is a lack of effective therapies for patients with non-V600E BRAF mutant cancer. Here, the authors report limited response in a phase II trial investigating the combination of binimetinib (MEK inhibitor) and encorafenib (BRAF inhibitor) for the treatment of non-V600E BRAF mutant cancer and subsequently investigate resistance mechanisms and combination therapeutic strategies in patient-derived models.

Cerebrospinal fluid (CSF) is essential for brain development. Here, the authors use gold nanoparticle enhanced X-ray microtomography to map CSF distribution in post-natal rodents and describe particle size-dependent CSF pathways that transport CSF into the brain parenchyma of rodents.

Strong X-ray emission from a population of radio jets shows variability that supports a model of synchrotron emission by a secondary population of electrons boosted to teraelectronvolt energies within a small volume of a jet.

Early high-resolution images of two 2021 novae reveal eruptions unfolding in multiple stages with colliding outflows that produce shocks and gamma rays, reshaping our understanding of stellar explosions.

CD44 expressed by fibroblastic reticular cells in secondary lymphoid organs regulates trafficking of dendritic cells, and thus has an essential role in the priming of T cells and the adaptive immune response.

Visualizing the structural dynamics of isolated molecules would help to understand chemical reactions, but this is difficult for complex structures. Intense femtosecond X-ray pulses allow the full imaging of exploding photoionized molecules, in this case, with eleven atoms.

A possible kilonova associated with a nearby, long-duration gamma-ray burst suggests that gamma-ray bursts with long and complex light curves can be spawned from the merger of two compact objects, contrary to the established gamma-ray burst paradigm.

Researchers have demonstrated the generation and control of subfemtosecond pulse pairs from a two-colour X-ray free-electron laser and conducted pump–probe experiments in core-ionized molecules.

The nature of the ferryl intermediate generated in reactions catalysed by heme-containing enzymes is uncertain, due to the ambiguity of X-ray crystallography data. Here, the authors apply neutron diffraction, kinetics and other spectroscopy to directly observe a protonated ferryl intermediate in a heme peroxidase.

Early emission from gamma-ray burst GRB 211211A comes entirely from charged particles accelerating in strong magnetic fields. The fast-evolving spectrum may be the key to understanding unusually long-lived GRBs from neutron star mergers.

The lowest-frequency gravitational wave background may be shaped by supermassive black hole binaries that scatter nearby stars or dark matter. In this case, the NANOGrav 15-year dataset favours dense galactic centres with 10⁶ solar masses per cubic parsec.

XFEL radiation is providing new opportunities for probing biological systems. Here the authors perform nanoscale x-ray imaging of microtubules with helical symmetry, by using imaging sorting and reconstruction techniques.

Quantum coherence and dephasing in molecular motions determine the behaviour of many chemical reactions and are the fundamental basis for the concept of coherent control. Now, ultrafast X-ray scattering combined with a detailed structural determination analysis precisely measures the coherent vibrational motions of a polyatomic organic molecule following photoexcitation.

The accretion geometry of X-ray binary Cygnus X-3 is determined here from IXPE observations. X-ray polarization reveals a narrow funnel with reflecting walls, which focuses emission, making Cyg X-3 appear as an ultraluminous X-ray source.

The epitaxial growth of hyperdoped Ga:Ge films and trilayer heterostructures by molecular-beam epitaxy yield superconductivity with a critical temperature of 3.5 K and may enable quantum functionalities in this material system, which is accessible with well-established semiconductor technologies.

Medication non-adherence represents a healthcare challenge, generating over $100 billion in additional costs annually in the USA. Here, the authors developed a resorbable and ingestible system designed for assessing medication adherence.

Figure 1. Schematic illustration of capsule based, biodegradable medication adherence tracking system with envisioned scenario for clinical use. A, Bio-RFID capsule administration. B, Shielding coating dissolution and payload release C, Monitoring of the Tag ID and frequency range, recording of the payload for tracking adherence. D, Dissolution and biosorption of the coating, tag and the capsule.

Core excitons are strongly localised excitonic states impacting x-ray absorption and resonant inelastic scattering (RIXS) spectra. Here, the authors demonstrate an application of free electron laser-driven ultrafast RIXS spectroscopy to study previously unclear aspects of core exciton-phonon interactions in graphite.

This paper presents evidence for dynamical interactions in the very dense regions in the core of galaxies causing two compact objects, such as neutron stars and black holes, to merge, leading to a gamma-ray burst.

High-pressure-temperature experiments that explore the impact of carbon and silicon on the plastic deformation of hexagonal close-packed iron suggest depth-dependent elastic anisotropy in Earth’s inner core may originate from chemical stratification