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Mesoporous metal–organic frameworks containing unsaturated Cr(III) sites are able to thermodynamically and selectively capture nitrogen from mixtures with oxygen and methane.
The control of biophysical cues during the culture of human pluripotent stem cells on biomaterial substrates can be used to replicate the in vivo amniogenic environment and direct in vitro generation of early human amniotic tissue.
A theoretically proposed photonic crystal design with valley-dependent spin-split bulk bands allows for the independent control of valley and topology in a single system.
The use of monolayers of hexagonal boron nitride as the cationic diffusion barrier and graphene aerogel mixed with spiro-OMeTAD as the hole transport layer allows the fabrication of graded bandgap perovskite solar cells with high efficiency.
Single cells encapsulated in a layer of alginate and injected intravenously delay clearance kinetics and sustain donor-derived soluble factors in vivo.
Heart-on-a-chip devices with integrated strain gauges for direct readout of tissue contractile strength allow for multiplexed drug-dose experiments and studies of functional maturation of cardiac tissue.
A universal descriptor for the prediction of C–H bond activation barriers has been established, and combined with a thermodynamic analysis of methane activation, to provide design rules for various types of heterogeneous catalysts.
Using MOFs as active electrodes in electrochemical double layer capacitors has so far proved difficult. An electrically conductive MOF used as an electrode is now shown to exhibit electrochemical performance similar to most carbon-based materials.
A high-throughput hydrogel-based platelet-contraction cytometer is able to quantify single-platelet contraction forces and may function as a clinical diagnostic biophysical biomarker.
The superconductivity is found to control the magnetic configuration in GdN/Nb/GdN spin valves as a result of an antiferromagnetic exchange interaction arising from the coupling between the superconducting condensation energy and the magnetic state.
A device is presented that can detect mid-infrared plasmons in graphene encapsulated by hexagonal boron nitride via the thermoelectric effect; the natural decay product of the plasmons (electronic heat) is converted into a measurable voltage signal.
A room-temperature metastable skyrmion phase, which undergoes reversible transitions between a triangular and square lattice upon varying the temperature and magnetic field, is found in β-Mn-type Co8Zn8Mn4.
The electrical control and readout of single two-level state defects in a defective oxide film grown directly on the channel of a thin-film FET allow for the extraction of individual long relaxation times.
The use of a sacrificial layer of water-soluble Sr3Al2O6 allows the release of freestanding 2D heterostructures and superlattices of epitaxially grown perovskite oxides while preserving their structural and physical properties.
An artificial phononic graphene for surface acoustic waves on a LiNbO3 integrated platform allows for the experimental demonstration of pseudo-diffusion transport and a temporal beating effect similar to the ‘Zitterbewegung’ phenomenon.
Room-temperature thermal conductivities in superatomic crystals are found to be proportional to the sound speed, while their behaviour can switch between amorphous- or crystalline-like, depending on temperature and the nature of superatoms used.
A real-time study of the growth of two-dimensional nanocrystal superlattices with square periodicity shows the formation mechanism leading to the oriented attachment of the nanocrystals.
A method to synthesize 2D layers of gallium nitride on SiC is reported. Epitaxial graphene preliminarily grown on SiC allows intercalation of gallium atoms on the SiC substrate and stabilizes the 2D gallium nitride islands formed by ammonolysis.