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Environmental effects of oxide nanomaterials

Stanislaus Wong presents on the role of chemical composition, morphology, structure, size, and shape in the toxicity of nanomaterials

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STEM gives depth to angstrom precision patterning

Studies of amorphous oxides exposed to electron beams reveal an angstrom-precision fabrication technique for patterning depth as well as surface structures.

Like charges pack into islands on graphene

New findings might be useful for creating functional charge patterns in nanodevices.

Annihilating defects in block copolymers

Materials could now be used for making next-generation nanocircuits.

Hybrid junction makes high-performance photovoltaic device

New CNT-based structure might be used to power smart chips, MEMS and sensors.

Protein nanoreactor performs single-molecule chemistry

Researchers can use it to follow a wide range of chemical reactions relevant to biology.

Chemical treatments protect cantilevers

(with audio) Silicon cantilever sensitivity improved by preventing growth of not just oxide, but specifically amorphous oxide layers.

Deep-blue PHOLEDs brighten up

First phosphorescent organic light-emitting diodes that emit both very bright and deep blue light could be used in displays and other lighting applications.

Shedding more light on graphene moiré plasmons

New work could help in the development of advanced plasmonic circuits for novel optical and optoelectronic devices with tunable properties.

Chirality affects current flow in graphene transistors

New work could help make better tunnelling electronics devices from the carbon sheet and even lead to a new technology, “chiraltronics”.

Aligning nanorods using light

Semiconducting films might be used in display applications and in optoelectronics devices.

Fast nanodroplets surf on graphene

(with movie and audio) Studies of water droplet diffusion on graphene reveal exceedingly fast transport and an unusual diffusion mechanism.

Zinc oxide goes graphene-like

First free-standing ZnO membranes could find use in a variety of electronics applications.

Nanosheet flow meters find sensor stability

A quick and simple synthesis approach yields nanosheets with high stability under air flow sensor conditions.

Cavity 'exciton-polaritons' could help improve optoelectronics

A new way to control how light interacts with atomically thin semiconducting crystal layers.

Nanowire LEDs could make flexible displays and lightbulbs

Researchers in France have made the first flexible green and blue light-emitting diodes based on vertical nitride nanowires.

Genetic engineering boosts energy transport in artificial photosynthesis

Viral scaffolding allows excitons to travel faster and further.

Silicon quantum logic gate is a first

Device uses electron spin and is made by conventional semiconductor manufacturing processes.

nanotechweb.org autumn round-up

(with movie)We look at the top stories on nanotechweb.org over the past three months.

PRINT hydrogels target tumours

Shape and size affect how these particles best accumulate in cancer cells.

2D semiconductors go anisotropic

Electron-beam irradiation can be used to tune the conducting channels in single-layer ReS2 and ReSe2 – two technologically important direct-bandgap materials.