Lifeboat Foundation

Scientists have long theorised that there are other types of superconductor out there waiting to be discovered, and it turns out they were right: new research has identified a g-wave superconductor for the first time, a major development in this area of physics.

Superconductors are materials that offer no electrical resistance, so electricity can pass through them with close to 100 percent efficiency.

That sounds great when you think about the potential of super-efficient power grids that don’t lose energy to heat. But there’s a catch. Materials that are able to act in this way usually need to be cooled to ultra-low temperatures before the actual superconductivity starts happening.

Structural coloration techniques have improved display science due to their high durability in terms of resistance to bleaching and abrasion, and low energy consumption. Here, we propose and demonstrate an all-solid-state, large-area, lithography-free color filter that can switch structural color based on a doped semiconductor. Particularly, an indium-gallium-zinc-oxide (IGZO) thin film is used as a passive index-changing layer. The refractive index of the IGZO layer is tuned by controlling the charge carrier concentration; a hydrogen plasma treatment is used to control the conductivity of the IGZO layer. In this paper, we verify the color modulation using finite difference time domain simulations and experiments. The IGZO-based color filter technology proposed in this study will pave the way for charge-controlled tunable color filters displaying a wide gamut of colors on demand.

© 2020 Chinese Laser Press

Long-distance cargo ships lose a significant amount of energy due to fluid friction. Looking to the drag reduction mechanisms employed by aquatic life can provide inspiration on how to improve efficiency.

Fish and seaweed secrete a layer of mucus to create a slippery surface, reducing their friction as they travel through water. A potential way to mimic this is by creating lubricant-infused surfaces covered with cavities. As the cavities are continuously filled with the lubricant, a layer is formed over the surface.

Though this method has previously been shown to work, reducing drag by up to 18%, the underlying physics is not fully understood. In the journal Physics of Fluids, researchers from the Korea Advanced Institute of Science and Technology and Pohang University of Science and Technology conducted simulations of this process to help explain the effects.

Researchers perfect a battery that will let electric vehicles charge faster and drive farther while lasting a lot longer, but don’t expect to see it anytime soon.

For years, solid-state batteries have been heralded as the answer to many of the issues surrounding EVs. The battery technology allows for greater energy density, which translates into more range from the same size pack as a lithium-ion battery. The problem has been that the failure rate is far too high after repeated charging. Also, they’re super expensive. But Samsung may have solved the first issue.

BOSTON, July 27, 2020 /PRNewswire/ — Solid-state batteries keep on attracting tremendous attention and investment with the maturing technologies and closeness to mass production. Even with the influence of COVID-19, the potential market size is expected to grow to over $6 billion by 2030, according to IDTechEx’s report “Solid-State and Polymer Batteries 2020–2030: Technology, Patents, Forecasts, Players.”

Rice physicists set far-more-accurate limits on speed of quantum information.

Nature’s speed limits aren’t posted on road signs, but Rice University physicists have discovered a new way to deduce them that is better — infinitely better, in some cases — than previous methods.

“The big question is, ‘How fast can anything — information, mass, energy — move in nature?’” said Kaden Hazzard, a theoretical quantum physicist at Rice. “It turns out that if somebody hands you a material, it is incredibly difficult, in general, to answer the question.”

Evolutionary search has helped scientists predict the lowest energy structure of a two-dimensional (2-D) material, B₂P₆, with some remarkable features, including structural anisotropy and Janus geometry.

Janus materials—named after the two-faced Greek god of duality—have two surfaces with distinct physical properties. As such, they offer unique benefits, such as high solar-to-hydrogen efficiency.

Anisotropic materials exhibit different properties when measured along different directions. In the case of B₂P₆, the ionic diffusion is strongly anisotropic, a feature that can be potentially useful in affordable energy storage solutions, such as metal-ion batteries.

Public-private partnerships have been central to the development of cybersecurity over the past decade, through the sharing of threat information between commercial organizations and historically secretive government agencies. The opportunity now exists for a new era of public-private partnership, for a new realm of information sharing.

Cyberattacks continue to be reported as a key business risk. In the recent World Economic Forum’s Regional Risks for Doing Business 2019 report, survey respondents in six of the world’s 10-largest economies identified cyberattacks as their number one risk.

Continue reading “How to build a modern public-private cybersecurity partnership” »

The California Independent System Operator warned rolling blackouts could hit 3 million customers Sunday. PG&E said 17 counties could see power outages Monday.