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Low-power and compact active pixel sensor (APS) matrices are desired for resource-limited edge devices. Here, the authors report a small-footprint APS matrix based on monolayer MoS2 phototransistors arrays exhibiting spectral uniformity, reconfigurable photoresponsivity and de-noising capabilities at low energy consumption.
The ultra-slow reshaping of pine cones is dominated by the unique spring/square heterostructure in their vascular bundles, with the velocity slowed by sclereids. Inspired by this motion, a soft actuator showing unperceivable motion was developed.
An implantable tissue adhesive soft actuator adheres to muscle, generating mechanical stimulation, and activates mechanosensing pathways for prevention of atrophy in disuse muscles.
A discovery-oriented synthesis and characterization platform uses interchangeable polymer components to explore a large and complex parameter space to find possible combinations of components that satisfy the design rules at multiple nanolithography patterns dimensions.
Independently tailored nano- and mesoscale features are obtained in hierarchically assembled mixed graft block copolymers with precisely defined side-chain sequences.
The authors use high-resolution angle-resolved photoemission spectroscopy to determine the microscopic structure of three-dimensional charge order in AV3Sb5 (A = K, Rb, Cs) and its interplay with superconductivity.
Using molecular-beam epitaxy, we synthesize heterostructures of topological insulator Bi2Se3 and the Ising superconductor monolayer NbSe2. By changing the Bi2Se3 thickness, they demonstrate a crossover from Ising- to Rashba-type superconducting pairing.
Nanoparticle catalysts can be highly active, but are susceptible to deactivation due to sintering under operational conditions. The Pt and Pd–Pt catalysts synthesized here are stable under demanding reaction conditions with temperatures as high as 1,100 °C.
Electrochemical phase transformation in ion-insertion crystalline electrodes is accompanied by compositional and structural changes. The formation of oriented phase domains and the development of strain gradient is now mapped quantitatively during the electrochemical ion-insertion process.
Iridium-based electrocatalysts are traditional anode catalysts for proton exchange membrane water electrolysis but suffer from high cost and low reserves. An alternative, nickel-stabilized ruthenium dioxide catalyst with high activity and durability in acidic oxygen evolution reaction for water electrolysis is reported.
Heat capacity of nanoporous materials is important for processes such as carbon capture, as this can affect process design energy requirements. Here, a machine learning approach for heat capacity prediction, trained on density functional theory simulations, is presented and experimentally verified.
Triplet-fusion-based photon upconversion is promising for photovoltaic or bioimaging applications, but its efficiency is limited by triplet fusion spin dependence. Here, the authors tailor spin dynamics by engineering the crystal structure with metal–organic frameworks to enable effective spin mixing between singlet and quintet triplet–triplet pair states.
The manuscript reports on the experimental observation of a Lifshitz transition in a topological insulator HfTe5 subject to a strong magnetic field, which results in the formation of topological one-dimensional Weyl modes in the bulk of a three-dimensional material.
Robust cholesteric liquid crystal elastomer fibres with rapid and reversible mechanochromic responses are woven and sewn into garments to create smart clothing.
Biohybrid microrobots consisting of nanoparticle-modified microalgae are constructed for active drug delivery in the lungs. In an acute bacterial pneumonia model, the microrobots effectively reduce bacterial burden and lessen animal mortality.
Laser additive manufacturing can be exploited to generate unique internally twinned nanoprecipitates in commercial titanium alloys, paving the way to fabricate ultrastrong metallic materials with intricate shapes for broad applications.
The authors use circularly polarized light pulses to trigger all-optical magnetization switching in an atomically thin ferromagnetic semiconductor. The switching process is related to spin angular momentum transfer from photoexcited carriers to local magnetic moments.
Angle tunability in twisted bilayer graphene is crucial in promoting its applications of twistronics. Here an angle replication strategy is developed to obtain centimetre-scale bilayer graphene with arbitrary twist angles.
Solid-state electrolytes are key to the development of safer and higher-energy-density batteries. Using liquid electrolyte chemistries as models for polymer electrolytes, the effect of adding a variety of porous and dense ceramic electrolytes on the conductivity is now investigated.