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Jacob Khurgin describes a possible ultimate limit to the plasmonic confinement of light.

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Stretchy copper patch provides pain relief

Metallic-based film could be a real alternative to conventional warm gel and thermal packs for alleviating the pain caused by everyday sprains and strains, and might even help patients suffering from arthritis.

Laser light purifies nanotube mix

2500 nm wavelength IR beam separates out semiconducting single-walled carbon nanotubes from a mix of both semiconducting and metallic thanks to a phenomenon called thermocapillary flow.

TMD gets p-doped

Researchers have succeeded in “substitutionally” introducing niobium atoms into molybdenum disulphide for the first time.

Nanogaps enhance IR spectroscopy

Arrays of tiny buried plasmonic cavities could be used to detect biomolecules.

RESOLFT nanoscopy goes dual-channel

Improved microscopy technique does not photodamage biological samples and is also free of chromatic errors.

Laser pulse cleans up selenium nanoparticles

A new and easy way to make nanostructures free of surface contamination – ideal for use as antibacterial agents and in solar cells.

Dye brings graphene composites closer to industry

A common industrial dye provides a simple low-cost approach to producing and processing graphene composites.

Blu-ray patterns improve solar cells

Quasi-random nanostructured patterns allow devices to absorb more sunlight.

Supersonic bullets test graphene’s strength

Carbon sheet is eight to 10 times better than steel.

SQAd nanoparticles could help speed up stroke recovery

Nanoassemblies containing squalene and adenosine could help protect neurons following cerebral ischemia and spinal-cord injury.

Protons penetrate graphene

Although theory suggests graphene is impermeable to protons, recent experiments show proton conductance of a single layer may be high.

Graphene neural electrodes deliver the best of both worlds

Flexible, conductive and transparent graphene electrodes enable the study of neuron dynamics with high spatial and temporal resolution.

Nitrogen dopes carbon sheet - even at high temperatures

Processes similar to those already employed in silicon technology could be exploited in graphene-based electronics.

CP light creates chiral nanostructures

Circularly polarized light can produce right- or left-handed twisted nanoribbons.

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.