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Jun 10, 2020

A route to the directional control of light–matter interactions at the nanoscale

Posted by in categories: computing, mobile phones, nanotechnology, quantum physics

Mobile phones and computers are currently responsible for up to 8% of the electricity use in the world. This figure has been doubling each past decade but nothing prevents it from skyrocketing in the future. Unless we find a way for boosting energy efficiency in information and communications technology, that is. An international team of researchers, including Ikerbasque Research Associate Alexey Nikitin (DIPC), has just published in Nature 1 a breakthrough in quantum physics that could deliver exactly that: electronics and communications technology with ultralow energy consumption.

Future information and communication technologies will rely on the manipulation of not only electrons but also of light at the nanometer-scale. Squeezing light to such a small size has been a major goal in nanophotonics for many years. Particularly strong light squeezing can be achieved with polaritons, quasiparticles resulting from the strong coupling of photons with a dipole-carrying excitation, at infrared frequencies in two-dimensional materials, such as graphene and hexagonal boron nitride. Polaritons can be found in materials consisting of two-dimensional layers bound by weak van der Waals forces, the so-called van der Waals materials. These polaritons can be tuned by electric fields or by adjusting the material thickness, leading to applications including nanolasers, tunable infrared and terahertz detectors, and molecular sensors.

But there is a major problem: even though polaritons can have long lifetimes, they have always been found to propagate along all directions (isotropic) of the material surface, thereby losing energy quite fast, which limits their application potential.

Jun 10, 2020

The Quantum App Store Is Coming

Posted by in categories: computing, quantum physics

Quantum computing is still the province of specialized programmers—but that is likely to change very quickly.

Jun 10, 2020

Tesla Semi: Elon Musk says time to bring electric trucks to volume production

Posted by in categories: Elon Musk, sustainability, transportation

Elon Musk has said that “it is time to bring” Tesla Semi electric trucks to volume production in a memo to all Tesla employees.

In a new email to employees last night, Musk that he wants to go “all out”:

“It’s time to go all out and bring the Tesla Semi to volume production. It’s been in limited production so far, which has allowed us to improve many aspects of the design.”

Jun 10, 2020

Aerosol-printed graphene unveiled as low cost, faster food toxin sensor

Posted by in categories: chemistry, food

Researchers in the USA have developed a graphene-based electrochemical sensor capable of detecting histamines (allergens) and toxins in food much faster than standard laboratory tests.

The team used aerosol-jet printing to create the sensor. The ability to change the pattern geometry on demand through software control allowed and efficient optimization of the sensor layout.

Commenting on the findings, which are published today in the IOP Publishing journal 2-D Materials, senior author Professor Mark Hersam, from Northwestern University, said: “We developed an aerosol-jet printable graphene ink to enable efficient exploration of different device designs, which was critical to optimizing the sensor response.”

Jun 10, 2020

Air Force general confirmed as first black chief of a U.S. military service

Posted by in category: military

Defense

The Senate on Tuesday confirmed Gen. Charles Q. Brown to be the next Air Force chief of staff.

Jun 10, 2020

Crew Dragon likely to support extended space station stay

Posted by in categories: engineering, health, space travel

WASHINGTON — SpaceX’s Crew Dragon spacecraft is performing well enough on orbit to give NASA confidence that the mission can last until August, an agency official said June 9.

Ken Bowersox, the acting associate administrator for human exploration and operations at NASA, told an online meeting of two National Academies committees that NASA had been monitoring the health of the Crew Dragon spacecraft since its launch May 30 on the Demo-2 mission, carrying NASA astronauts Bob Behnken and Doug Hurley to the International Space Station.

NASA, he noted, had not set a length for the mission, saying they wanted to see how the Dragon performed in space. “The Dragon is doing very well, so we think it’s reasonable for the crew to stay up there a month or two,” he told members of the Aeronautics and Space Engineering Board and Space Studies Board.

Jun 9, 2020

How the pandemic fast-tracked this multibillion-dollar industry | Make It International

Posted by in categories: biotech/medical, business, education

The coronavirus pandemic has been a real learning curve, not least for educators. But with many schools now reopening, questions are being asked about what the future of education might look like. CNBC Make It’s Karen Gilchrist spoke to entrepreneurs in India, Hong Kong and the U.S. to learn more about the multibillion-dollar business opportunity.

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Jun 9, 2020

DeepMind Introduces ‘EATS’ — An Adversarial, End-to-End Approach to TTS

Posted by in categories: entertainment, robotics/AI

DeepMind wowed the research community several years ago by defeating grandmasters in the ancient game of Go, and more recently saw its self-taught agents thrash pros in the video game StarCraft II. Now, the UK-based AI company has delivered another impressive innovation, this time in text-to-speech (TTS).

Text-to-speech (TTS) systems take natural language text as input and produce synthetic human-like speech as their output. The text-to-speech synthesis pipelines are complex, comprising multiple processing stages such as text normalisation, aligned linguistic featurisation, mel-spectrogram synthesis, raw audio waveform synthesis and so on.

Although contemporary TTS systems like those used in digital assistants like Siri boast high-fidelity speech synthesis and wide real-world deployment, even the best of them still have drawbacks. Each stage requires expensive “ground truth” annotations to supervise the outputs, and the systems cannot train directly from characters or phonemes as input to synthesize speech in the end-to-end manner increasingly favoured in other machine learning domains.

Jun 9, 2020

Rapid de novo assembly of the European eel genome from nanopore sequencing reads

Posted by in categories: biotech/medical, computing, information science

Circa 2017


We have sequenced the genome of the endangered European eel using the MinION by Oxford Nanopore, and assembled these data using a novel algorithm specifically designed for large eukaryotic genomes. For this 860 Mbp genome, the entire computational process takes two days on a single CPU. The resulting genome assembly significantly improves on a previous draft based on short reads only, both in terms of contiguity (N50 1.2 Mbp) and structural quality. This combination of affordable nanopore sequencing and light weight assembly promises to make high-quality genomic resources accessible for many non-model plants and animals.

Jun 9, 2020

SpaceX drops plans for Port of Los Angeles facility again

Posted by in categories: finance, space travel

WASHINGTON — For the second time in less than 18 months, SpaceX has abandoned plans to build a manufacturing facility at the Port of Los Angeles for its next-generation Starship launch vehicle.

In a March 27 letter obtained by SpaceNews, SpaceX notified the Port of Los Angeles that it was terminating a lease approved just a month earlier for a parcel of land at the port. News of the lease termination was first reported by the Los Angeles Times.

The letter, signed by Bret Johnsen, SpaceX’s chief financial officer, served as a 45-day notice of SpaceX’s intent to terminate the lease, making the effective end date of the lease May 11. The letter did not explain why the company was terminating the lease.