Volume 21 Issue 6, June 2022

Atomically dispersed catalysts show great promise, but their design is challenging. A library of catalysts spanning 37 elements was created to uncover unified principles for catalyst design.

Using high-pressure synthesis, perovskite antimonates have been realized with enhanced charge density wave gap and superconducting transition temperatures up to 15 K.

Wireless optoelectronic devices are fabricated by controlling the porosity of p-type silicon, enabling in vivo efficient, non-genetic optoelectronic modulation of peripheral nerve activity.

Lipid nanodiscs carrying a potent STING agonist penetrate deep into solid tumours compared with gold-standard liposomes and enable long-term antitumour immunotherapy.

A temporal modulation protocol enriches topological Floquet physics by enabling the realization of bimorphic Floquet systems where Chern and anomalous Floquet phases coexist in a single platform of laser-written waveguides.

Twisted monolayer–multilayer graphene superlattices present bi-stable reconstruction states, with reversible switch in-between and long-distance propagation triggered by local mechanical perturbation. This provides additional degrees of freedom for moiré engineering.

The interface stacking order of twisted graphene can be actively flipped between locally stable states using a mechanical impulse, and this flipping propagates spontaneously through the network in a domino-like fashion.

High-pressure synthesis is used to stabilize superconducting (Ba,K)SbO₃, whose properties provide a fresh perspective on the origin of superconductivity in these types of materials.

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.

Asynchronous sublattice magnetization switching is found in a ferrimagnetic material and understood by considering the exchange coupling and alloy microstructure.

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.

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%.

Transition metal oxide electrodes are promising for rechargeable batteries but are subject to suffer from structural transformations and electrochemical degradation. The evolution of oxygen-redox activity and reversibility in layered electrodes are shown to arise from cation-migration mechanisms during de/intercalation.

The oxygen evolution reaction is central to making chemicals and energy carriers using electrons. Metal hydroxide–organic frameworks are shown to act as a tunable catalytic platform for oxygen evolution, with π–π interactions dictating stability and transition metals modulating activity.

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.

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.

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.

Three-dimensional printed protein-based robotic structures are actuated by exoskeleton-like coats of molecular motor assemblies upon the spatially targeted release of chemical fuel, resulting in micrometre-scale shape-morphing 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.