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Topological antiferromagnetic states are generated and spatially reconfigured in free-standing crystalline membranes of haematite through strain design.
Active and stable catalysts to accelerate the transition from fossil fuel to renewable feedstocks, reduce energy consumption and minimize environmental footprints are needed. Electrocatalysts based on copper nanocrystals encapsulated in hybrid alumina shells stable against structural reconstruction during CO2 electroreduction are reported.
A nanoscale polymer layer formed by mucins at the surface of tumour cells protects them against immune cell attack. This shield can be circumvented through immune cell engineering, using chimeric antigen receptors to stimulate natural killer and T cells or by tethering glycocalyx-editing enzymes to immune cells.
Optically detected magnetic resonance (ODMR) is an efficient mechanism for quantum sensors and has been discovered in a few systems, but all have technological limitations. Here the authors report room temperature ODMR in single defects in GaN, promising for integrated quantum sensing applications.
Light-induced artificial goosebumps on liquid crystal elastomer skin are used to precisely manipulate passive microstructures, achieving a localized and controllable system for programmable micromachines.
Exploiting optical multimodal confinement, the deep-subwavelength confinement of hyperbolic phonon polaritons is demonstrated in isotopically pure hexagonal boron nitride, enabling nanoscale polariton manipulation.
Developing active and stable atomically dispersed catalysts is challenging because of weak non-specific interactions between catalytically active metal atoms and supports. A general method for synthesizing these catalysts via photochemical defect tuning for controlling oxygen-vacancy dynamics is proposed.
Oxides with a face-centred cubic anion sublattice are generally not considered as solid-state electrolytes. Li superionic conductivity in face-centred cubic oxides with face-sharing Li configurations have now been created through cation over-stoichiometry in rocksalt-type lattices via excess Li.
Intense light pulses can induce symmetry breaking, as for the generation of ferroelectricity in SrTiO3. Using ultrafast X-ray diffuse scattering at a free-electron laser, nonlinear phonon interactions that occur on such mid-IR excitation are observed, with a theory for the dynamics presented.
Soft building blocks tend to be near spherical, limiting their packing structures to those found in metallic systems. Here the authors report the spontaneous generation of highly deformed mesoatoms using molecular pentagons and observe Frank–Kasper phases not found in metal alloys.
A general process for a room-temperature, homogeneous Suzuki–Miyaura-type polymerization is reported, demonstrating a route for the scalable production of device-quality conjugated polymers.
Although silicon anodes are promising for solid-state batteries, they still suffer from poor electrochemical performance. Chemo-mechanical failure mechanisms of composite Si|Li6PS5Cl and solid-electrolyte-free silicon anodes are now revealed and should help in designing improved electrodes.
Samples of NdNiO2+x are prepared with meticulous control of the oxygen content. Their X-ray scattering and spectroscopy measurements then reveal that the previously reported charge density wave in undoped infinite-layer nickelates is, in fact, a spurious effect.
NiFe-based oxo-hydroxides are active for the oxygen evolution reaction but suffer from complex synthesis and durability when deposited. Easily processable Fe–Ni alloys with a highly active oxo-hydroxide surface are now shown to pave the way for oxygen-evolving electrodes for alkaline water electrolysers.
Direct observation of noble gas structures has been achieved at room temperature using electron microscopy. This was enabled by trapping them between two layers of graphene, where they form two-dimensional clusters.
Quantifying recombination in halide perovskites is crucial, but quantitative analysis remains rare. Here the authors observe a long-lived and continuously changing photoluminescence decay time due to the high density of shallow defects and substantial rates of charge carrier trapping.