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An in situ X-ray nanodiffraction technique allows for the real-time study of the photoinduced chemical reaction to produce Ag from AgBr, and can spatially resolve structural changes at the submicrometre scale with a time resolution of 5 ms.
X-ray scattering and molecular dynamics simulations show that asymmetries in the ligand-shell thickness of self-assembled nanoparticle membranes at air/water interfaces affect the macroscopic properties of the membranes.
The evolution of the superconductivity as a function of film thickness and doping is systematically studied in FeSe films. A high-temperature superconducting phase is found to arise in multilayer films.
It is demonstrated that Bragg coherent diffraction imaging can be used to visualize dislocation propagation in three dimensions during the repeated growth and dissolution of calcite crystals.
In the superconducting phase of niobium nitride the spin Hall effect is mediated by quasiparticles. Decreasing the spin injection current causes the inverse spin Hall signal to become 2,000 times larger in this phase than in the normal state.
Clinical translation of transcription factor therapeutics is limited by delivery problems. Now, an oligonucleotide that can bind and deliver transcription factors with high in vivo efficiency and treat acetaminophen-induced liver injury is reported.
Electron filling causes a reduction of the chemical potential in (Sr1−x Lax)3Ir2O7, which suggests negative electronic compressibility. Studying the concomitant change of the bandgap provides insight into the physical mechanism behind this effect.
Using highly coherent interfaces of alternating oxide layers a bismuth-oxide-based oxygen ion conductor exhibits unprecedented high chemical stability in reducing conditions and during redox cycles at high temperature.
A design rule to synthesize organic molecules with a phosphorescence lifetime longer than 1 second is presented. The molecules form H aggregates that promote the stabilization of triplet excitons and persistent luminescence under ambient conditions.
A general memoryless molecular mechanism explains the self-organization of Brownian-like steps into truncated Lévy walks in the classic system of intracellular trafficking.
A scheme of hybrid optical–electrical detection of an ensemble of donor electrons bound to phosphorus in silicon reveals electron spin Rabi oscillations and long coherence times, setting the foundations for a single-electron spin read-out technique.
A porous metal–organic framework with ultrawide channels and excellent chemical stability is now shown to be highly efficacious for the catalytic decomposition of chemical warfare agents containing phosphate ester bonds.
An approach to design compensated ferrimagnetic Heusler alloys is established. A small lack of compensation produces giant exchange bias and large coercivity. This effect is observed for alloys that have the magnetic transition above room temperature.
Fast fluorescence resonance energy transfer between CdSe nanoplatelets on a picosecond timescale is measured. This process is faster than Auger recombination and leads to the observation of multiexcitonic energy transfer in these materials.
Visible-light-responsive photocatalysts can directly harvest energy from solar light. Stable conducting polymer nanostructures show high photocatalytic activity under visible light without using sacrificial reagents or precious metal co-catalysts.
The square-twist origami structure, believed to have a non-foldable crease pattern, is now shown to be foldable through bending deformations that are not explicit in the pattern and that lead to a transition between mechanical mono- and bistability.
The resonant microwave excitation response of metals, semiconductors and insulating chiral magnets is studied by examining their entire magnetic phase diagrams, which includes the skyrmion lattice phase. A unified model to explain this response is also developed.
An almost ideal quantum anomalous Hall state is observed in (Bi,Sb)Te films doped with vanadium. This state is reached without the application of a polarizing magnetic film, making these materials interesting for low-power electronic applications.
Soft filamentous bundles, including F-actin, microtubules or bacterial flagella, can experience large frictional forces that scale logarithmically with sliding velocity, and such frictional coupling can be tuned by modifying lateral interfilament interactions.
Obtaining reliable high-pressure data from hydrogen at elevated temperatures presents considerable experimental challenges. It is now shown that a new phase transition occurs above 200 GPa as temperature increases, possibly indicating melting.