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Materials news, October 2017

Defects responsible for photoluminescence in little-studied perovskite

Bromine vacancies that trap passing excitons are the source of the strong photoluminescence in a little-studied perovskite.

Low cost energy storage with readily available materials

A new, inexpensive battery powered by sulfur, air, water and salt can store twice as much energy as a lead-acid battery.

Electrons under extreme conditions, warm dense matter.

'Thermodynamic stability’ theory says nanoclusters will only be stable if the core cohesive energy is balanced by the core-to-shell binding energy.

High-resolution study of a nanocrystalline copper surface reveals a pattern of tilted grains creating a landscape of valleys and ridges.

Scientists have unexpectedly discovered ordered, segregation-induced superstructures at general grain boundaries in polycrystalline alloys.

A new technique that uses an electron beam to burn tiny windows into a polymer can measure the catalytic activity of 2D materials.

Coating paper with gold nanoparticles produces a flexible supercapacitor that could be used to help power wearable devices.

Scientists have produced novel photocatalysts by coating aluminum nanoparticles with islands of various different metals.

Biodegradable and flexible optical fibres offer many advantages for medicine.

Researchers have come up with a new hybrid nanomaterial that can harness solar energy to generate hydrogen from seawater.

Computer simulations have shown that the molecules in glasses such as amorphous ice can sometimes be arranged in a previously undetected order.

Researchers have reported superconductivity in two kinds of higher titanium oxides prepared in the form of ultrathin films.

Scientists have developed a new electron microscope technique for observing colloidal nanoparticles while they interact and self-assemble.

Scientists have increased the length of time that organic materials can emit luminescence from minutes to over an hour.

New approach integrates liposomal technology with ‘smart’ hydrogels that are responsive to NIR light.

Scaffold consisting of freeze-dried conductive PEDOT:PSS supports survival, growth, and differentiation of osteogenic precursor cells.

Using ultracold atoms, researchers have discovered an intriguing magnetic behavior that could help explain how high-temperature superconductivity works.

By finding a way to sprinkle the surface of lead-sulphide quantum dots with extra sulphur, scientists have enhanced their charge transport properties.

Using a coating of conductive polymer, scientists have come up with a new technique for creating electrically heated clothing such as gloves.

A novel perovskite solar cell retains more than 95% of its 20% conversion efficiency under full sunlight illumination for more than 1000 hours.

Using dynamic atomistic simulations, researchers have resolved every ‘jiggle and wiggle’ of atomic motion that underlies metal strength.

A new 2D film made of polymers and nanoparticles can direct two different non-mixing liquids into a variety of exotic architectures.

Scientists have uncovered a strategy for using surface tension to grow perovskites into centimeter-scale, highly pure crystals.

By precisely controlling the size and positioning of quantum dots in a superlattice, scientists are able to finely tune its optical properties.

Researchers have shown how laser light can be used to forge graphene into 3D objects such as a pyramid.

Scientists have discovered a two-dimensional alloy with an optical bandgap that can be tuned by the temperature used to grow the alloy.

Computer simulations predict that crystallized aluminum with a diamond-like structure would have a lower density than water.

Next-generation batteries may be inspired by biology.

A new study shows that defects in the crystal lattice of insulating metal oxides could be key to their use in a variety of high-tech applications.

A polysaccharide polyelectrolyte complex made from cellulose and chitosan could replace plastic barrier coatings in packaging.

A novel fabric-like material electrode could help make batteries and supercapacitors faster and less susceptible to leaks or meltdowns.

Frictional, structural, and mechanical studies of hind leg femur-tibia joint of katydids reveals novel antifriction and antiwear properties.

Micrometer-sized particles can be used to stabilize beer foam, and could also lead to the development of advanced functional materials.

A new study shows that animals spin silk by pulling rather than pushing it out of their bodies, which could improve the processing of synthetic materials.

Two new energy storage technologies, comprising a novel electrode and catalyst, could enhance lithium-ion batteries or replace them entirely.

Biomass used to make carbon microspheres for energy storage.

Novel filler for polymer composite used hollow glass microspheres and carbon fibers to bring unique combination of properties.

Introducing holes for storing magnesium and aluminum into titanium dioxide produces an effective electrode for multivalent batteries.

Scientists have boosted the performance of thermoelectric materials by tuning the carrier scattering mechanism to improve carrier mobility.

New research shows the potential of using nickel-based coatings to mitigate corrosion by molten salts in concentrating solar power plants.

Glycol ethers can significantly improve the structure and alignment of perovskite grains in the thin films used in solar cells.

Polymer-coated gold nanocages loaded with active agents modulate telomerase activity.

Pathogen-mimicking nanocomplex tricks the body into launching immune response against tumors.

Using light and humidity to heal the defects in perovskites for solar cells.

A thin layer of oxidation on graphene-wrapped magnesium nanoparticles can enhance rather than hinder their hydrogen storage.

New light-emitting diode that offers purest green light.

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