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Fabrication of semiconductor heterojunctions typically involves a complex process and often leads to bioincompatibility. Here, the authors propose a porous heterojunction in p-type silicon via simple stain etching at ambient conditions, and apply it in optically induced biomodulation.
Thin films of BaTiO3 do not possess the same small switching fields and energies as the single-crystal form, hindering applications. Here, thin films are synthesized that enable switching for voltages <100 mV and fields <10 kV cm–1, and a pathway to subnanosecond switching is presented.
Single-atom catalysts demonstrate enhanced catalytic properties, but most systems only explore combinations of a few different metals. Here, a library of 37 different elements is investigated, and it is shown that loading 12 metallic atoms in one system presents improved electrochemical activity.
Here the authors investigate lipid nanodiscs as drug carriers for antitumour immunotherapy. They demonstrate that flexible lipid nanodiscs functionalized with STING-activating cyclic dinucleotides exhibit superior tumour penetration and tumour cell uptake compared with spherical liposomes, resulting in improved antitumour T-cell priming and tumour regression.
Extreme mechanical deformation processes can lead to nanograins in many metals, but the underlying mechanism remains unclear. Nanotwinning-assisted dynamic recrystallization is shown to facilitate grain refinement to the nanoscale at high strains and strain rates.
A multiscale modelling platform combining nanoscale resonant scattering, mesoscale multiple scattering and macroscale light transport effectively predicts the macroscopic visual effects created by optical metamaterials with disordered nanostructures.
Asynchronous sublattice magnetization switching is found in a ferrimagnetic material and understood by considering the exchange coupling and alloy microstructure.
The morphology of donor–acceptor blends in organic photovoltaics dictates the efficiency of the exciton dissociation and charge diffusion, and thus the final device performance. Here, the authors show that filament assembly helps to maximize the output, further enabling a power conversion efficiency greater than 19%.
Highly stretchable organic electrochemical transistors with stable charge transport under severe tensional strains are demonstrated using a honeycomb semiconducting polymer morphology, thereby enabling controllable signal output for diverse stretchable bioelectronic applications.
Intercalation-type metal oxides are promising anodes for Li-ion batteries but suffer from low energy and power density together with cycling instability. A nanostructured rock-salt Nb2O5 formed via amorphous-to-crystalline transformation during cycling with Li+ is shown to exhibit enhanced performance.
Volatile organic compounds such as benzene are toxic pollutants that cause health issues even at trace concentrations. Here, a double-walled metal–organic framework is presented that demonstrates high uptake at very low pressures (<10 Pa), allowing the removal of benzene to below acceptable indoor limits.
Departing from common approaches to designing Floquet topological insulators, here the authors present a photonic realization of Floquet topological insulators revealing topological phases that simultaneously support Chern and anomalous topological states.
Recent studies have revealed unexpected characteristics in moiré superlattices formed by stacking two-dimensional crystals. Here, the authors report whirlpool-shaped periodic lattice distortions in moiré superlattices leading to anomalous optical responses.
Early cancer detection typically involves invasive biopsies. Here the authors designed nanosensors that are depolymerized by disease-associated enzymes in vivo to produce fluorescent urinary signals for non-invasive early diagnosis.
Slit-like nanochannels of pristine graphite and activated carbon, fabricated by van der Waals assembly of pristine or sculpted graphite crystals, enable comprehensive ionic response measurements and the systematic realization of their ion transport properties. These are attributed to optimal combinations of (mobile) surface charge and slippage effects at the channel wall surface in both pristine and activated nanochannels.
Nanometre-sized clusters can self-organize into centimetre-scale hierarchical structures, mimicking the complex constructions seen in nature and providing a platform to design synthetically directed advanced materials with sophisticated functions.
Cu2O is a promising platform to host Rydberg exciton–polaritons, where excitons strongly couple to cavity photons, however their realization has been elusive. Here, the authors report Rydberg exciton–polaritons with principal quantum numbers up to n = 6.
Hydroxide exchange membrane fuel cells are promising as an energy conversion technology, but require platinum group metal electrocatalysts for their application. A Ni-based hydrogen oxidation reaction catalyst is now shown to exhibit unprecedented electrochemical performance.
Superionic lithium conductivity has only been observed in a few classes of materials, mostly in thiophosphates but rarely in oxides. Corner-sharing connectivity in an oxide crystal structure framework is now shown to promote superionic conductivity.