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Studies on the morphology stability of polymer donor–small-molecule acceptor blends relevant to solar cell stability reveal relationships between their intermolecular interactions and the thermodynamic, kinetic, thermal and mechanical properties.
Understanding the origin of unprecedented solar-to-hydrogen efficiencies in doped SrTiO3 has proved challenging. Linking in situ charge accumulation to electronic structure in this system now reveals design principles for hydrogen-evolving photocatalysts.
Sodium ion batteries could be an attractive alternative to Li-ion technology but designing high energy density and moisture stable Na-based cathodes is challenging. Adjusting synthesis conditions and stoichiometry, an O3-type NaLi1/3Mn2/3O2 phase with anionic redox activity is reported.
Ferroelectric superlattices can present a rich variety of phenomena. Here, in PbTiO3/SrRuO3 superlattices, it is shown that a complex and stable hierarchical supercrystal can form, with the correlated metal of the SrRuO3 layers showing large curvatures.
Angle-resolved photoemission evidence for a three-dimensional higher-order topological insulator is presented. This work demonstrates that stacking configurations can be utilized to realize different topological phases.
Hydrogen doping and polymer adsorption at the oxide surface of liquid metal microparticles increase the conductivity and viscoplastic behaviour of the oxide, leading to liquid-metal-based printed circuits with stable resistance up to 500% strain.
A broad range of characterization techniques is used to understand the dominant electron conduction in various p-type doped π-conjugated polymers, which show p-type and n-type thermoelectric power factors depending on the dopant concentration.
Periodic patterns with varying cross-linking densities are realized in conjugated polydiacetylene films, creating multiple holographic images—all dynamically responsive to exposure to various solvents—simultaneously in the same polymeric structures.
Scanning electron microscopy is used to image stacking domains in few-layer graphene, as well as moiré patterns in twisted van der Waals heterostructures, allowing for the correlation of the local structure with their excitonic properties.
The applicability of organic materials in conventional Li-ion batteries is challenging owing to the lack of lithium-containing and air-stable cathodes. A class of conjugated sulfonamides to be used as lithium-ion positive electrodes is now shown to exhibit reversible charge storage.
Phosphonated polymers have been proposed as anhydrous proton conductors for fuel cells but anhydride formation of phosphonic acid functional groups lowers conductivity. A synergistically integrated phosphonated poly(pentafluorostyrene) is shown to maintain high protonic conductivity above 200 °C.
It is now shown that tumour-associated macrophages recruited early during tumour evolution stimulate stromal fibroblasts to express collagen crosslinking enzymes and that the stromal expression, particularly of lysyl hydroxylase 2, can predict survival in a patient cohort.
Self-assembling, histidine-rich peptides with similar catalytic functions as those of haem-dependent peroxidases are reported. These findings may have implications for the design of cofactor-free catalytic nanomaterials.
Extrusion-based bioprinting has been shown to rapidly and reproducibly generate kidney organoids from a cell-only paste, with the number and maturation of functional units within the kidney tissue capable of being further improved by bioprinting tissue sheets.
Two-dimensional MOFs can possess porosity and electrical conductivity but are difficult to grow as single crystals. Here, by balancing in-plane and out-of-plane interactions, single crystals of sizes up to 200 µm are grown, allowing in-plane transport measurements and atomic-resolution analysis.
Microporous annealed-particle degradable scaffolds have been developed and shown to induce type 2 innate and adaptive immune response that facilitated skin wound healing.
Comparison of hexagonal boron nitride samples grown with different techniques and with varying carbon-doping content provides evidence that the defects emitting single photons in the visible range are carbon related.
Metallic nanoparticles used to harvest energy from a light source typically result in reduced chemical reaction temperature. Endothermic reactions requiring higher activation energy can now be initiated at room temperature using localized surface plasmons in the deep-UV range.
A mild electrochemical exfoliation method has been developed to obtain large-size two-dimensional superconductor monolayers with high crystallinity and production yield, which enables the easy fabrication of twisted van der Waals heterostructures and printed films.
The low dielectric constants and high porosity of MOFs are of interest for applications in electronics and sensors, but patterning techniques for these materials are in their infancy. Here, direct X-ray and electron-beam lithography at sub-50-nm resolution are reported that leave porosity and crystallinity intact.