Uber shutters its driverless-car operations in Arizona – Roadshow

After a fatal crash in the state earlier this year, the ride-hailing company says it will focus on its program in Pennsylvania.

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Microsoft says it’s extending GDPR rights to consumers worldwide – CNET

Users outside the European Union can also take advantage of the company’s new privacy rules.

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Trump can’t block Twitter users from following his account, judge rules – CNET

It’s a First Amendment issue, and the judge says Twitter is a public forum.

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Researchers squeeze light into nanoscale devices and circuits

Investigators have made a major breakthrough in nanophotonics research, with their invention of a novel 'home-built' cryogenic near-field optical microscope that has enabled them to directly image, for the first time, the propagation and dynamics of graphene plasmons at variable temperatures down to negative 250 degrees Celsius. If researchers can harness this nanolight, they will be able to improve sensing, subwavelength waveguiding, and optical transmission of signals.

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Cheap, small carbon nanotubes

Carbon nanotubes are supermaterials that can be stronger than steel and more conductive than copper, but they’re rare because, until now, they’ve been incredibly expensive.

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Controlled nano-assembly

DNA, the carrier of genetic information, has become established as a highly useful building material in nanotechnology. One requirement in many applications is the controlled, switchable assembly of nanostructures. Scientists have now introduced a new strategy for control through altering pH value. It is based on ethylenediamine, which only supports the assembly of DNA components in a neutral to acidic environment — independent of the base sequences and without metal ions.

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Making massive leaps in electronics at nano-scale

By chemically attaching nano-particles of the rare earth element, gadolinium, to carbon nanotubes, the researchers have found that the electrical conductivity in the nanotubes can be increased by incorporating the spin properties of the gadolinium which arises from its magnetic nature.

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Understanding light-induced electrical current in atomically thin nanomaterials

Scientists demonstrated that scanning photocurrent microscopy could provide the optoelectronic information needed to improve the performance of devices for power generation, communications, data storage, and lighting.

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Preserving a painter’s legacy with nanomaterials

Paintings by Vincent van Gogh, Pablo Picasso and Johannes Vermeer have been delighting art lovers for years. But it turns out that these works of art might be their own worst enemy — the canvases they were painted on can deteriorate over time. In an effort to combat this aging process, one group is reporting that nanomaterials can provide multiple layers of reinforcement. 

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Researchers squeeze light into nanoscale devices and circuits

Investigators have made a major breakthrough in nanophotonics research, with their invention of a novel ‘home-built’ cryogenic near-field optical microscope that has enabled them to directly image, for the first time, the propagation and dynamics of graphene plasmons at variable temperatures down to negative 250 degrees Celsius. If researchers can harness this nanolight, they will be able to improve sensing, subwavelength waveguiding, and optical transmission of signals.

Continue reading » · Rating: · Written on: 05-23-18 · Comments Off