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Organic resistive memories based on a spin-coated layer of a ruthenium complex with azo-aromatic ligands show high endurance, stability and fast switching speed, as well as good device reproducibility.
A microfluidics method to generate giant, copolymer-stabilized liposomes is presented. These vesicles are functionalized with distinct proteins to recapitulate cellular processes.
Stimulated emission under continuous-wave excitation from mercury telluride quantum dots at very low thresholds (compatible with electrical injection) is achieved by exploiting surface traps that render the quantum dots into four-level systems.
The structure and porosity of a zinc imidazolate framework above the melting point was studied with neutron and X-ray scattering, and molecular dynamics. The porosity and local bonding of the framework persist even in the liquid phase.
Circulating tumour DNA is used as a biomarker for cancer diagnosis. Here, the authors identified a DNA methylation biomarker for hepatocellular carcinoma and developed diagnostic and prognostic models to predict specificity and survival of patients.
The mechanical properties of biomaterials affect cell growth through mechanotransduction signals. Here, hydrogels with fast stress relaxation were developed and showed increased cartilage matrix formation by cartilage cells compared to slow relaxation hydrogels.
Lattices of exciton-polariton condensates provide the base for a simulator that can be used to find the global minimum of the classical XY Hamiltonian.
Imaging of ferroelectric domain walls and their polarity is achieved through scanning stress microscopy. Twin boundaries are found to allow nanoscale gating of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface.
Time-resolved ultrafast spectroscopy is combined with stimulated emission depletion microscopy to observe exciton migration in conjugated polymer films with nanometre and picosecond resolution.
The structure of ionic liquids under confinement is not well understood and hinders their widespread use for applications. Convincing evidence of partial breaking of Coulombic ordering of ions confined in subnanometre carbon pores is now provided.
Compared to monovalent lithium or sodium ions, the reversible insertion of multivalent ions into battery electrodes has proved challenging. An aliovalent doping strategy involving reversible Mg2+ and Al3+ insertion in anatase TiO2 is now reported.
A model analysing the neighbour transfer integrals between adjacent molecules is used to build a three-dimensional map, which helps to visualize the electronic conditions yielding large carrier mobility in molecular crystals.
Designing fully tunable metamaterials for applications ranging from sensors to superlenses remains a challenge. A reversible electrotuneable liquid mirror based on voltage-controlled self-assembly/disassembly plasmonic nanoparticles is now reported.
At tissue boundaries, cellular repulsive events are manifested as deformation waves that result from an oscillatory pattern of traction forces and intracellular stress that pull cellular adhesions away from the boundary.
Theoretical analysis of competing diffusion modes within electrocatalytic films is challenging. It is now shown that the competition depends on a single dimensionless parameter that contains all operational and structural experimental factors.
Femtosecond laser pulses can induce local bulging or plasma ablation of silk with limited structural damage, thus offering a technique for cutting, patterning, bending and welding of silk with various other materials.
Cardiac repair usually requires highly invasive interventional procedures. Here, the authors develop an injectable shape-memory cardiac patch and demonstrated its applicability in a myocardial infarction model.
Metal-oxide superlattices were found to possess coexisting phases; a ferroelectric phase and a vortex phase with electric toroidal order. Electric fields interconverted from one phase to another, potentially enabling new functionality.
Highly nanostructured purely organic films are shown to enhance the Raman signal of methylene blue molecules by three orders of magnitude, due to the unique molecular geometry, morphology and electronic properties of the films.
Ligand–integrin binding is essential for cell and tissue growth. Here, controlled integrin binding on a hyaluronic acid hydrogel was shown to promote endothelial cell sprouting in vitro and vessel network formation in vivo.