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Electrochemical hydrogenation drives a reversible conductor–insulator transition in graphene. Authors show that it is 10⁶× faster than other methods and tunable by isotope effects and lattice corrugations, enabling ionic control of 2D electronics.

Here, the authors show that Brown-Zak fermions in graphene-on-boron-nitride superlattices exhibit mobilities above 10⁶ cm²/V s and micrometer scale ballistic transport.

Multilayer stacks of graphene and related two-dimensional crystals can be tailored to create new classes of functional materials. Britnell et al. report resonant tunnelling of Dirac fermions and tunable negative differential conductance in a graphene-boron nitride-graphene transistor.

Graphene on boron nitride gives rise to a moiré superlattice displaying the Hofstadter butterfly: a fractal dependence of energy bands on external magnetic fields. Now, by means of capacitance spectroscopy, further aspects of this system are revealed—most notably, suppression of quantum Hall antiferromagnetism at particular commensurate magnetic fluxes.

Two closely spaced two-dimensional systems can remain strongly coupled by electron–electron interactions even though they cannot physically exchange particles. Coulomb drag is a manifestation of this interaction—in which an electric current passed through one layer causes frictional charge flow in the other—now experimentally observed in bilayer graphene

Photodetection is believed to be among the most promising potential applications for graphene. Here, by combining graphene with plasmonic nanostructures, the efficiency of graphene-based photodetectors is increased by up to two orders of magnitude.

A single layer of graphene on top of a hexagonal boron-nitride sheet can stretch to form a commensurate structure, or not — depending on the rotation angle between the two layers. In the case of commensurability, strain gets concentrated in domain walls, resulting in soliton-like structures.

The authors study tunneling junctions in rhombohedral MoS₂ bilayers and correlate their performance with the local domain layout. They show that the switching behavior in sliding ferroelectrics is strongly dependent on the pre-existing domain structure.

The valley splitting in a stack of graphene and boron nitride can be controlled through a quantum dot induced by a scanning tunnelling microscope.

We show that domain walls in minimally twisted bilayer graphene support exceptionally robust proximity superconductivity in the quantum Hall regime.

Experimental control of electron-electron interactions in materials is challenging. Here, the authors control the interactions by proximity screening with gate dielectrics of nanometer thickness, revealing qualitative changes in concentration and temperature dependences, and validating their analysis using electron hydrodynamics and umklapp scattering approaches.

Encapsulated few-layer InSe exhibits a remarkably high electronic quality, which is promising for the development of ultrathin-body high-mobility nanoelectronics.

Graphene’s linear dispersion relation makes its charge carriers behave as if they were massless. However, near the Dirac point where graphene’s valence and conduction bands meet, electron–electron interactions cause this relation to diverge, such that it becomes strongly nonlinear and the effective carrier velocity doubles.

Crystallographic alignment of the two graphene layers in a van der Waals heterostructure leads to resonant tunnelling with the conservation of both energy and momentum.

Lattice reconstruction in twisted transition metal dichalcogenides manifest in intrinsic asymmetry of electronic wavefunctions for 3R homo-bilayers and strong piezoelectric textures in 2H homo-bilayers.

A plethora of solid-state nanodevices rely on engineering the quantization of electrons in quantum wells. Here, the authors leverage the thickness of exfoliated 2D crystals to control the quantum well dimensions in few-layer semiconductor InSe and investigate the resonance features in the tunnelling current, photoabsorption and light emission spectra.

Graphene-based Hall magnetometers can be used to study the magnetization of two-dimensional ferromagnets.

Disorder-induced Anderson localization usually causes conducting materials to become insulating at low temperature. Graphene is a notable exception. But by increasing the carrier density in one graphene layer, a metal–insulator transition can be induced in an isolated second layer stacked above it.

Placing graphene on a boron nitride substrate and accurately aligning their crystallographic axes, to form a moiré superlattice, leads to profound changes in the graphene’s electronic spectrum.

A suitably engineered plasmonic metamaterial featuring topologically protected sharp phase variations close to a zero-reflection point of incident lightwaves has now been demonstrated. Exploiting the high sensitivity of the abrupt phase changes, and by using reversible hydrogenation of graphene and binding of streptavidin–biotin, the detection of individual biomolecules and an areal mass sensitivity of the order of fg mm⁻² is reported.

Heterostructures of very thin films have been used for decades in research and industry. Now a transmission electron microscopy study demonstrates the possibility of realizing perfect structures built by piling up one-atom-thick layers of graphene and boron nitride.

Van der Waals magnetic materials are composed of atomically thin magnetically ordered layers stacked together. Here, aiming to control magnetism locally, Klein et al use an electron beam to create small regions where van der Waals layers are orientated perpendicular to the rest of the sample.

Josephson junctions based on graphene exhibit tunable proximity effects. The appearance of superconducting states when changing magnetic field and carrier concentration has now been investigated—some proximity effect survives for fields above 1 T.

Type-II van der Waals interfaces formed by different two-dimensional materials enable robust interlayer optical transitions, regardless of common issues such as lattice constant mismatch, layer misalignment or whether the constituent compounds are direct or indirect band semiconductors.

Layered clays are of interest for membranes and many other applications but their ion-exchange dynamics remain unexplored in atomically thin materials. Here, using electron microscopy, it is found that the ion diffusion for few-layer two-dimensional clays approaches that of free water and that superlattice cation islands can form in twisted and restacked materials.

All materials subjected to mechanical deformation form low energy interfaces known as twin boundaries. Here, the authors investigate a variety of structural features that form upon bending atomically thin 2D-crystals, and predict distinct classes of post deformation microstructure based on their atomic arrangement, bend angle and flake thickness.

Excitonic bands in MoSe₂/WS₂ heterostructures can hybridize, resulting in a resonant enhancement of moiré superlattice effects.

A genetically encoded labeling system uses smallest-in-class fluorogen-activating protein tags for time-resolved fluorescence multiplexed cellular imaging, offering monoexponential decay and potential for sophisticated fluorescence lifetime analysis.

Genetics and transcriptomics reveal shared mechanisms of psychiatric and gastrointestinal disorders, highlighting neurological pathways and pleiotropic loci. Genes BSN, CELF4, NRXN1 regulate gut-brain axis, revealing potential therapeutic targets.