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Solar water splitting is promising for hydrogen production and solar energy storage, but for large-scale utilization cost must be reduced. A membrane-free approach in separate oxygen and hydrogen cells brings water splitting closer to applications.
Time-of-flight momentum microscopy is developed. It enables direct three-dimensional mapping of the topology of the Fermi surface, identification of electron and hole pockets, and quantification of Fermi velocity as a function of wavevector.
It is now shown that the phase of heteromolecular submonolayer films formed by adsorbates with opposite intermolecular interactions can be controlled by tuning the density of the gas phase of the species with repulsive character.
Complex colloidal crystal structures can be obtained by a combination of preassembled units and DNA-mediated interactions. This enables, for instance, the generation of a MgCu2 structure with interpenetrating diamond and pyrochlore sublattices.
For high-capacity electrodes with anionic redox, the importance of structural dimensionality has not been elucidated. The possibility of triggering anionic redox activity in a tridimensional-ordered Li-rich positive electrode is now demonstrated.
The antifogging properties of a structured surface can be considerably enhanced if the feature size is small enough and if the feature shapes are cones rather than cylinders.
A pump–push–probe time-resolved technique is developed to characterize the dynamics of photoexcitations at buried, disordered interfaces. Applied to organic bulk heterojunctions, the method provides insight on charge separation in photovoltaic films.
A blue-emitting phosphor without thermal quenching is reported. The emission losses at high temperatures are compensated by a counter mechanism, originating in energy transfer between electron–hole pairs and thermally activated defect levels.
Increased cellular expression of RAB5A, an important regulator of endocytic processes, brings epithelial cells from a jammed state to coordinated motion, and can facilitate wound closure, gastrulation and migration in constrained environments.
Coherent diffractive imaging during hydriding of palladium nanocrystals reveals that phase nucleation begins after dislocation nucleation at the phase boundary for large particles. The hydrogen-rich phase resembles a spherical cap.
Uniform, hierarchical 2D nanostructures with controlled shapes can be prepared from homopolymers with charged end-groups using a crystallization-driven assembly process.
The use of diamondoids as structure-directing agents allows the synthesis of metal–organic chalcogenide nanowires with an inorganic core having a three-atom cross-section and band-like conductivity.
Garnet-type electrolytes are attractive for lithium metal batteries due to their high ionic conductivity. A strategy to decrease interfacial impedance between a lithium metal anode and garnet electrolyte is found promising for all-solid-state batteries.
Laser-excited muon pump–probe spin spectroscopy and analysis of avoided level crossing resonances are used to probe the time evolution of the chemical reactivity of individual carbon atoms in TIPS-pentacene after light excitation.