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IOP A community website from IOP Publishing spring round-up


We look at the top stories on over the first three months of 2015.

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IR microscope images ambipolar transistor

Technique will help to improve real working devices made from semiconducting polymers.

BNNTs make “rebar” graphene

Nanotubes made of boron nitride help strengthen carbon sheet.

Instant read-out nanosensor screens drug “cocktails”

New device could also help identify potential environmental hazards quickly and safely.

Atomic BN sheets make perfect substrates

Ultrathin hexagonal boron nitride improves the electronic properties of 2D materials like graphene and molybdenum disulphide thanks to its unusual dielectric screening behaviour.

Automated software brings AFM to the masses

Park Systems introduces fully automated atomic force microscope systems that mean users don’t need technical expertise.

Controlling the temperature of nanopore sensors

Plasmonic nanostructures made from nanopores and “bulls-eye” nanoantennas might be used to detect single molecules and biomolecules, such as proteins and DNA, and analyse their properties.

Stretchable silicon nanoribbons make artificial skin

New device can sense strain, pressure, temperature and humidity, and might be used in prosthetics and in robotics applications.

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.