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Chains of localized spins coexist with conduction electrons in Ti4MnBi2, enabling studies of how the collective physics of one-dimensional magnets is modified in metals.
The authors report that the metallic spin-1/2 chain compound Ti4MnBi2 forms near a quantum critical point with inherent frustration. They identify strong 1D spin and 3D electron coupling that should stimulate the search for materials exhibiting a 1D Kondo effect and heavy fermions.
Controlled growth of suspended boron nitride layers with metastable AA stacking has been realized on gallium nitride wafers, with surface steps aligning the layer orientation and electron doping stabilizing the stacking configuration.
The precise synthesis of functional polyarylamines based on a reactivity-regulated sequent cross-coupling carbon–nitrogen polycondensation method has been reported, with excellent batch-to-batch uniformity for perovskite solar cells.
A bioinspired microneedle patch mimics the natural rhythm of human growth hormone secretion by combining burst-release and delayed-release modules to promote improved bone growth in mice and rats.
Stack pressure controls porosity during Li alloying/dealloying. A threshold pressure is needed for the densification and stable cycling of Li alloys in batteries, leading to the design of Li alloy anodes with densified interfacial layers for cycling at low pressures in solid-state batteries.
Organic semiconductors suffer from low optical damage thresholds, limiting their use in applications. Here the authors bypass this limit by utilizing spectrally tailored gain from stimulated emission to amplify molecular vibrations in organic semiconductors for efficient Raman lasers.
Diamond-based materials present diverse microstructures that can be tailored to tune their properties. This Review examines the latest developments in diamond and its derivative materials, focusing on microstructural design strategies, phase transition mechanisms, property enhancements and emergent phenomena.
Metamaterials are advancing with intricate structure designs and material combinations, with the support of computational methods and scalable fabrication techniques. These advancements enable the creation of multifunctional and smart devices, with growing presence in commercial devices.
Two-dimensional-materials-based gate-all-around field-effect transistors are demonstrated at the wafer scale using the high-mobility two-dimensional semiconductor Bi2O2Se and its native oxide dielectric Bi2SeO5, enabling promising performance and energy efficiency for monolithic three-dimensional integrated circuits beyond silicon.
Intrinsic toughening in two-dimensional transition metal dichalcogenides can be achieved simply by twisting the layers. This twisting promotes cross-layer healing and grain boundary formation, which shield fracture tips from stress concentration.
The authors demonstrate broadband terahertz emission from a two-dimensional van der Waals ferroelectric semiconductor, NbOI2, that originates from its efficient optical rectification and apply it to realize in situ near-field terahertz spectroscopy.
The uptake of water by polar solids can modify electrical and mass transport properties. This Review discusses hydration mechanisms and surveys case studies of the effects water uptake has on transport properties in different materials.
Characterizing the interference of phonons at the single-molecule level remains a challenging task. Here, the authors observe and characterize destructive phonon interference in molecular junctions at room temperature.
Achieving both high efficiency and narrow emission in organic light-emitting transistors (OLETs) remains a challenge. Here the authors demonstrate laterally integrated OLETs with an intrinsic microcavity that achieve both enhanced efficiency and narrow emission.
Fracture behaviours in multilayer h-BN, involving interlayer-friction toughening and edge-reconstruction embrittlement, are identified through in situ experiments and theoretical analyses.
Lipid nanoparticles formulated with ionizable lipids inspired by brain-targeting small molecules facilitate the delivery of mRNA past the blood–brain barrier and into the brain.
