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Dec 31, 2020

Stretching diamond for next-generation microelectronics

Posted by in categories: engineering, quantum physics

Diamond is the hardest material in nature. But out of many expectations, it also has great potential as an excellent electronic material. A joint research team led by City University of Hong Kong (CityU) has demonstrated for the first time the large, uniform tensile elastic straining of microfabricated diamond arrays through the nanomechanical approach. Their findings have shown the potential of strained diamonds as prime candidates for advanced functional devices in microelectronics, photonics, and quantum information technologies.

The research was co-led by Dr. Lu Yang, Associate Professor in the Department of Mechanical Engineering (MNE) at CityU and researchers from Massachusetts Institute of Technology (MIT) and Harbin Institute of Technology (HIT). Their findings have been recently published in the prestigious scientific journal Science, titled “Achieving large uniform tensile elasticity in microfabricated diamond”.

“This is the first time showing the extremely large, uniform elasticity of diamond by tensile experiments. Our findings demonstrate the possibility of developing electronic devices through ‘deep elastic strain engineering’ of microfabricated diamond structures,” said Dr. Lu.

Dec 31, 2020

Artificial Intelligence Begins to Realize Its Potential

Posted by in category: robotics/AI

Here’s a look at some interesting projects, like one that helps programmers maintain and update COBOL.

Dec 31, 2020

Turkey reveals its three-year cybersecurity plan

Posted by in category: cybercrime/malcode

The country hopes to defend its citizens from cyberattacks through a set of new measures.

Dec 31, 2020

Time travel is theoretically possible, new calculations show. But that doesn’t mean you could change the past

Posted by in categories: physics, time travel

Time travel is theoretically possible according to the laws of physics, a study says. But time-travelers couldn’t alter the past in a measurable way.

Dec 31, 2020

Potential New Treatment Strategy for Stroke

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

Summary: Treatment with LAU-0901, a synthetic molecule that blocks pro-inflammatory platelet-activating factor, in addition to aspirin-triggered NPD1, reduced the size of damage areas in the brain, initiated repair mechanisms, and improved behavioral recovery following ischemic stroke.

Source: LSU

Research conducted at LSU Health New Orleans Neuroscience Center of Excellence reports that a combination of an LSU Health-patented drug and selected DHA derivatives is more effective in protecting brain cells and increasing recovery after stroke than a single drug.

Dec 31, 2020

Why Opioids Cannot Fix Chronic Pain

Posted by in category: futurism

Summary: Study explores the role the reward system plays in chronic pain, finding emotional and physical pain are bidirectional. Opioids, researchers report, ultimately make things worse.

Source: University of Washington.

A broken heart is often harder to heal than a broken leg. Now researchers say that a broken heart can contribute to lasting chronic pain.

Dec 31, 2020

Data breach broker selling user records stolen from 26 companies

Posted by in category: cybercrime/malcode

A data breach broker is selling the allegedly stolen user records for twenty-six companies on a hacker forum, BleepingComputer has learned.

When threat actors and hacking groups breach a company and steal their user databases, they commonly work with data breach brokers who market and sell the data for them. Brokers will then create posts on hacker forums and dark web marketplaces to market the stolen data.

Last Friday, a data broker began selling the combined total of 368.8 million stolen user records for twenty-six companies on a hacker forum.

Dec 31, 2020

30 Years Since the Human Genome Project Began, What’s Next?

Posted by in categories: biotech/medical, futurism

Eric Green, head of the nation’s top genomics research institute, looks back on how far the field has come and shares his bold vision for the future.

Dec 31, 2020

Lunar Crater Radio Telescope (LCRT) on the Far-Side of the Moon

Posted by in category: space

An ultra-long-wavelength radio telescope on the far-side of the Moon has tremendous advantages compared to Earth-based and Earth-orbiting telescopes, including: (i) Such a telescope can observe the universe at wavelengths greater than 10m (i.e., frequencies below 30MHz), which are reflected by the Earth’s ionosphere and are hitherto largely unexplored by humans, and (ii) the Moon acts as a physical shield that isolates the lunar-surface telescope from radio interferences/noi… See More.

Dec 31, 2020

Designing Dirac vortex topological photonic crystal fibres

Posted by in category: futurism

Optical fibres made of topological photonic crystals allow improved versatility and control across the modes and polarization of light they transmit. Compositionally, photonic crystals contain bandgaps to prevent the passage of light relative to specific wave energies and momenta much like an on/off switch. In a new report now published on Nature Light: Science & Applications, Hao Lin, and Ling Lu at the Institute of Physics at the Chinese Academy of Sciences transmitted pure “single mode” light across a large frequency range via a topological feature known as a “Dirac vortex.” The concept can lead to applications that transmit light signals more stably across long distances. While the work is theoretical at present, the researchers suggest the use of fibers made from silica based on stack-and-draw methods or three-dimensional (3D) printing technologies to fabricate and test these theoretical concepts.

Understanding the nodal lines and Weyl points in a photonic crystal fibre.

Photonic crystal fibres rely on the endless variety of two-dimensional (2-D) crystals for their functionality. The concept of topological photonics based on robust waveguides can inspire new fibre concepts including the development of a one-way fibre inside a magnetic, 3D photonic crystal. In this work, Lin and Lu introduced a topological fibre (PCF) resembling the Dirac vortex topological cavity in its cross-section using 2-D photonic crystals. The Dirac vortex fibre is an ideal design to develop ultrabroadband single-polarization single-mode (SPSM) fibres due to the singlet mid-gap dispersion within the bandgap. The scientists eased the fabrication step by introducing a simplified design of only four capillary silica tubes to finally achieve an octave-spanning SPSM.