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Gallium is used as a sacrificial agent and mixing medium for the isothermal solidification synthesis of high-entropy alloy nanomaterials with diverse crystallinities and morphologies.

Synthesis of heterostructures of magnetic intercalation compounds in transition metal dichalcogenides (TMDs) via directed topotactic reactions enables the creation of multi-component magnetic architectures, overcoming limitations of crystallographic incommensurability

The electrostatic interactions in aqueous ionic media are screened by mobile charge carriers, limiting device design and operation speed. Here the built-in electric field is leveraged to dope ions into vanadium dioxide, triggering a surface insulator-to-metal transition, further enabling high-speed in-memory sensing in aqueous solutions.

Nanoparticle catalysts can be highly active, but are susceptible to deactivation due to sintering under operational conditions. The Pt and Pd–Pt catalysts synthesized here are stable under demanding reaction conditions with temperatures as high as 1,100 °C.

Electrochemical properties of organic mixed ionic–electronic conductors depend on their microstructure in operational ionic environments. The microstructure of a model organic mixed ionic–electronic conductor across multiple length scales in both dry and hydrated states, as well as its evolution on hydration, is revealed using cryogenic four-dimensional scanning transmission electron microscopy.

The development of advanced polymer electrochemical liquid cells for transmission electron microscopy allows direct monitoring of the atomic dynamics of electrified solid–liquid interfaces during copper-catalysed CO₂ electroreduction reactions.

Phase transitions in charge density wave materials could be useful for memory and electronic device applications. Here, the authors correlate the temperature-driven transitions in the electrical and optical properties of H-TaS₂/1T-TaS₂ heterostructures to the number of endotaxial metallic H-TaS₂ monolayers.

Complete strain tensor fields of twisted bilayer graphene are quantitatively mapped, revealing two-regime reconstruction mechanics depending on twist angle.

Lattice reconstruction crucially influences the electronic properties of twisted van der Waals structures. Here, the authors report a quantitative characterization of the mechanical deformations occurring in small-angle twisted bilayers and heterobilayers of 2D semiconductors via interferometric 4D scanning transmission electron microscopy.

Understanding the ripening of core-shell nanostructures is challenging. Here, the authors use liquid cell transmission electron microscopy to show that the atomic ripening pathway for Cd-CdCl₂ core-shell nanoparticles is mediated by crack defects.

Cortex morphology varies with age, cognitive function, and in neurological and psychiatric diseases. Here the authors report 160 genome-wide significant associations with thickness, surface area and volume of the total cortex and 34 cortical regions from a GWAS meta-analysis in 22,824 adults.

Solid–liquid interfaces are ubiquitous in natural and technological processes, but their imaging at the atomic scale has been challenging. The authors, using liquid-phase transmission electron microscopy, identify a quasi-liquid phase and the mass transport between the surface of In and Sn nanocrystals and an aqueous solution.

The pore space in the metal–organic framework Zr₆O₄(OH)₄(bpydc)₆ can be used as a scaffold to grow precisely defined atomically thick sheets of metal halide materials, taking advantage of multiple binding sites to direct complexation of the metal ions; these metal halide nanosheets fill the size gap between discrete molecular magnets and bulk magnetic materials, with potentially unusual magnetic properties arising from this size regime.

Scanning electron nanobeam diffraction is used to monitor the morphology of organic thin films with nanometre resolution, revealing information on the arrangement of crystalline domains useful for structure–property relationship understanding.

Liquid phase transmission electron microscopy reveals the growth pathway of 2D cobalt oxide and cobalt nickel oxide, in which 3D nanoparticles are formed first and then spread and transform into 2D nanosheets.

Topological magnetic monopoles are non-local spin textures that are robust to thermal and quantum fluctuations, but they are difficult to study at the nanoscale in real space. Now, soft X-ray vector ptycho-tomography is demonstrated to determine the three-dimensional magnetization vector and emergent magnetic field of such magnetic monopoles in a ferromagnetic meta-lattice.

Marcus Gallagher-Jones et al. use 4DSTEM to reconstruct real-space maps of single peptide nanocrystals at cryogenic temperature. They identify regions of crystal order/disorder providing new insights into crystal mosaicity.