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Materials news, October 2019

Scientists have discovered that chains of atoms can dash around at lightning speeds inside the cubic phase of pure titanium.

Understanding thermionic emission in graphene

Improving on Dirac cone approximation in graphene thermionic emission

Scientists have shown that the presence of certain compounds in the liquid electrolyte of lithium batteries prompts the growth of dendrites and whiskers.

A subtle interaction between single atomic defects in the 2D material tungsten diselenide and mechanical strain causes it to emit quantum light.

Shedding light on biomimetics

Due to a new quantum mechanism, the heat generated by friction is significantly lower in topological insulators than in conventional materials.

Navigational tools from the 16th century have helped researchers understand how polymer spheres can be transformed into twisted spindles.

Material with unconventional behavior affected by strong magnetic fields

New technique for 3D printing of soft materials with additive manufacturing

An alloy-based nanoparticle catalyst offers a greener route to producing a more robust version of a polymer used in bulletproof vests.

Electric current can simultaneously flow clockwise and counterclockwise in a ring of a polycrystalline material made from bismuth and palladium.

Scientists have produced a heavy fermion material with superconducting regions coexisting alongside regions in a normal metallic state.

A novel mathematical approach based on graph theory can predict which pairs of zeolite types can be transformed from one to the other.

Researchers have developed silk materials that can wrinkle into highly detailed patterns, which can be erased by flooding the silk surface with vapor.

Researchers have gained new insights into high-entropy alloys by using X-ray spectroscopy to create atomic-resolution chemical maps of them.

The superconducting state of uranium ditelluride rises, breaks down and then re-emerges on exposure to very strong magnetic field.

Engineers have identified two aspects of the interaction between a metal and its alloying material that can predict how a particular alloy will behave.

Complex shape-shifting lattices composed of multiple elastomeric materials can grow or shrink in response to changes in temperature.

Researchers have developed an artificial, layered crystal composed of the elements lanthanum, titanium, cobalt and oxygen in atom-thick sheets.

Researchers have found that submerging a polymer in liquid water can boost its ability to selectively remove carbon dioxide from gas mixtures.

By simply adding a trace amount of copper, scientists have created the strongest ever silver without reducing its electrical conductivity.

Scientists have discovered that the magic angle at which two layers of graphene become superconducting is slightly wider than originally thought.

Using a silver substrate and molecular-beam epitaxy , scientists were able to grow elongated, hexagon-shaped flakes of the 2D material borophene.

Researchers have found that graphene has many of the same mechanical properties as 3D graphite and is significantly thicker than widely believed.

A new model suggests that high-temperature superconductivity in cuprates arises when electrons hop from atom-to-atom in a particular pattern.

novel electroluminescent device uses flexible, electrically conductive Ag-coated nylon fibers embedded in a PDMS + ZnS composite as electrodes

As a step towards fabricating circuits from nanomaterials, engineers have created heterostructures from the 2D materials graphene and borophene.

Engineers have harnessed machine learning to design dielectric metamaterials that absorb and emit specific frequencies of terahertz radiation.

By combining different materials, scientists have created highly configurable, nanoscale thermal light emitters for producing light from heat.

Scientists have found a new way to manipulate the electronic properties of 2D tungsten disulfide that could prove useful for quantum computing.

Aerogel support for enzymes

Rechargeable lithium-ion batteries, Chemistry Nobel 2019

Researchers have created a net-like structure, called a ‘nanochain’, of antimony, which can enhance lithium-ion charge capacity in batteries.

Researchers have found that a crystal made of cobalt, manganese and gallium is a room-temperature topological magnet that hosts quantum loops.

Smart skin that responds to heat and sunlight

Films of platinum only two atoms thick supported by graphene could usher in fuel cell catalysts with unprecedented catalytic activity and longevity.

Adding spider silk protein to wood cellulose nanofibrils makes tougher, but flexible composite

Researchers have shown that ultrasonic waves produced by an acoustic transducer can manipulate the viscosity of shear-thickening materials.

Researchers have found that doping indium oxide with molybdenum rather than tin doubles the conductivity of this transparent conductor.

A Lewis acid offers an effective way to change the electrical properties of certain organic semiconductors, but only in the presence of water.

A silicone polymer embedded with temperature-sensitive dyes and liquid metal wires can carry out simple logic functions in response to touch.

Coating chlorine-etched aluminum foil with carbon nanotubes created a material that is 10 times blacker than anything previously reported.

Crystallographic dislocations can impact the ability of halide perovskites to hold energy derived from light in the form of excited electrons.

Smallest ever spectrometer based on a single nanowire

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