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Stopping phosphorene from degrading

An overlayer of alumina seems to do the trick.

Nonlinear signals benefit from top coat

A silver-coated nanowire provides efficient, tunable and directional nonlinear signals for photonic systems.

2D metal-dichalcogenides could make thin-film lasers

A tunable optical microcavity confines emitted light into a narrow line.

New 3D topological insulator is the most perfect yet

BiSbTeSe2 behaves just how theory says it should.

Layered tunnel junction reads single molecules

New technique could sequence DNA.

Only the fittest lattice optics will survive

Northwestern researchers have designed new types of artificially structured optical materials thanks to an algorithm based on Darwinian evolutionary principles.

Carbon nanotubes indiscriminately boost transistors

Carbon nanotube electrodes improve organic thin-film transistor performance regardless of the film morphology and structure, studies show.

Topological insulator goes superconducting

First experimental observation of Cooper pairs in a half-Dirac gas.

Nanoalloy can be two-faced

New phase map of copper-nickel shows that the material can be either “mixed” or “Janus”.

'Conformal' perovskite laser makes its debut

Structure also shows promise for solar cells and photodetectors.

Piezoelectrics transform low-power electronics

Researchers get around the mismatch in power requirements between transistor switches and wires by designing a transformer that adjusts the voltage from one to the other.

Size matters for catalyst nanoparticles – but so does phase

Whether platinum particles are used in a gas or liquid reaction is also important.

Graphene growth substrate tailors metal atom magnetism

New result may ultimately prove useful for information storage or for making qubits bits for quantum computing, albeit at very low temperatures.

Plasmons convert light into a voltage

Discovery of "plasmoelectric effect" could lead to new solar cells.

Graphene boundaries heat up

Defects could lead to early device failure, say researchers, but they might also be exploited to make better sensors from the atomically thin carbon sheets.

Striking a balance for better quantum dot LEDs

A quantum dot LED structure that includes an insulating layer to balance charge injections demonstrates greater efficiency and stability.

Silicon gets stretched

KAUST researchers have succeeded in stretching rigid, brittle, monocrystalline silicon to up to 10 times its original length.

Why does 'Tumbaga' look like pure gold?

Gold appears to segregate at copper-gold alloy surface – a result that will be important for making better nanocatalysts.

Graphene laminate make good thermal coating for plastics

Carbon sheet improves the thermal conductivity of PET by up to 600-fold.

Rhodium clusters go multiferroic

Pure metal system is ferromagnetic and ferroelectric – a result that bodes well for making future magnetic data storage and spintronics devices.