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Sep 5, 2019

Future of LEDs gets boost from verification of localization states in InGaN quantum wells

Posted by in categories: computing, quantum physics

Light-emitting diodes made of indium gallium nitride provide better luminescence efficiency than many of the other materials used to create blue and green LEDs. But a big challenge of working with InGaN is its known dislocation density defects that make it difficult to understand its emission properties.

In the Journal of Applied Physics, researchers in China report an InGaN LED structure with high luminescence efficiency and what is believed to be the first direct observation of transition carriers between different localization states within InGaN. The localization states were confirmed by temperature-dependent photoluminescence and excitation power-dependent photoluminescence.

Localization states theory is commonly used to explain the high luminescence efficiency gained via the large number of dislocations within InGaN materials. Localization states are the energy minima states believed to exist within the InGaN quantum well region (discrete energy values), but a direct observation of localization states was elusive until now.

Sep 5, 2019

Johannon BenZion — Ira Pastor — Futurist New Deal Podcast — “Harnessing Nature’s Clues for Regeneration, Disease Reversion, and Rejuvenation”

Posted by in categories: aging, bioengineering, biotech/medical, business, cryonics, futurism, genetics, geopolitics, government, health

Sep 5, 2019

How America’s First Digitally Operated Reactor Could Push Nuclear Technology Forward

Posted by in categories: education, engineering, geopolitics, internet, nuclear energy

“We can send signals to areas, such as schools in developing countries, that do not have the luxury of their own nuclear reactor facility and the associated educational infrastructure.” said Seungjin Kim, head of the Purdue’s School of Nuclear Engineering, in a July announcement. “As long as they have internet and this partnership with Purdue, they can see and study how the reactor works.”

PUR-1’s completion comes amidst a hunt for the next generation of nuclear tech. There are traveling wave reactors, which would hypothetically consume today’s nuclear waste and has garnered the interest of investors like Bill Gates. Then there are thorium reactors, which would would use less uranium and produce far less waste in the first place and has been promoted by Democratic presidential candidate Andrew Yang. Neither technology has been put into civilian practice yet.

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Sep 5, 2019

Black hole shock: Our universe could be INSIDE a black hole – shock claim

Posted by in category: cosmology

BLACK holes could be a portal to another universe and our cosmos could have been born from one, a scientist has sensationally claimed.

Sep 5, 2019

Something Strange Is Happening in the Fermi Bubbles

Posted by in category: space

In 2010, astronomers discovered two giant blobs centered on the core of our Milky Way galaxy. Their origins are still a mystery, but however they got there, the blobs are emitting copious amounts of high-energy radiation.

Sep 5, 2019

Geneticists Are Untangling the Mystery of Left-Handedness

Posted by in categories: biotech/medical, genetics, neuroscience

A series of genetic variants can influence handedness, according to a new paper.

No, researchers have not discovered a “handedness gene.” But through brain imaging of 9,000 people in the United Kingdom, researchers devised a list of genetic variations that contribute to the way different brain processes end up on either side of the brain. This, in turn influences handedness—and can also influence whether someone will develop certain neurological diseases, according to the paper published in the journal Brain.

Sep 5, 2019

They’re nine

Posted by in category: life extension

Click on photo to start video.

They’re insidious. They’re lethal, and they’re here to take your life. They’re the hallmarks of aging!

Sep 5, 2019

New technology allows software components to be isolated from each other with little computation

Posted by in categories: cybercrime/malcode, encryption, internet

Safeguarding passwords, credit card numbers or cryptographic keys in computer programs will require less computational work in the future. Researchers at the Max Planck Institute for Software Systems in Kaiserslautern and Saarbrücken have come up with a new technology called ERIM to isolate software components from each other. This allows sensitive data to be protected from hackers when the data is processed by online services, for example. The new method has three to five times less computational overhead than the previous best isolation technology, making it more practical for online services to use the technology. This was reason enough for USENIX, a US-American computing systems association, and Facebook to award their 2019 Internet Defense Prize to the researchers.

Computer programs are like a fortress. Just as a fortress is protected by thick walls, moats and iron gates, firewalls and other security technologies prevent cyber criminals from maliciously exploiting apps. And just as one poorly guarded gate or a supposedly secret escape tunnel may allow besiegers to capture a castle, all hackers need is a small security gap to gain access to all components of a software. In the worst case, they can then get their hands on the data that grants them access to or even allow them to make credit card payments. For example, the Heartbleed bug in the widely used OpenSSL encryption software made user names and passwords of various and programs vulnerable to hackers.

Sep 5, 2019

Scientists find new, long-hypothesized material state with signature of quantum disordered liquid-like magnetic moments

Posted by in categories: chemistry, quantum physics

The future of technology relies, to a great extent, on new materials, but the work of developing those materials begins years before any specific application for them is known. Stephen Wilson, a professor of materials in UC Santa Barbara’s College of Engineering, works in that “long before” realm, seeking to create new materials that exhibit desirable new states.

In the paper “Field-tunable quantum disordered in the triangular-lattice antiferromagnet NaYbO2,” published in the journal Nature Physics, Wilson and colleagues Leon Balents, of the campus’s Kavli Institute for Theoretical Physics, and Mark Sherwin, a professor in the Department of Physics, describe their discovery of a long-sought “” in the material NaYbO2 (sodium ytterbium oxide). The study was led by materials student Mitchell Bordelon and also involved physics students Chunxiao Liu, Marzieh Kavand and Yuanqi Lyu, and undergraduate chemistry student Lorenzo Posthuma, as well as collaborators at Boston College and at the U.S. National Institute of Standards and Technology.

At the atomic level, electrons in one material’s lattice structure behave differently, both individually and collectively, from those in another material. Specifically, the “spin,” or the electron’s intrinsic magnetic moment (akin to an innate bar magnet) and its tendency to communicate and coordinate with the magnetic moments of nearby electrons differs by material. Various types of spin systems and collective patterns of ordering of these moments are known to occur, and materials scientists are ever seeking new ones, including those that have been hypothesized but not yet shown to exist.

Sep 4, 2019

What humanity will gain by going to Mars

Posted by in category: space travel

The greatest space program spinoff? Human collaboration.