Archive for the ‘energy’ category: Page 6

Aug 15, 2023

DART asteroid-smashing spacecraft broke off 37 boulders that now have atomic bomb energy

Posted by in categories: energy, military, space

Last year, NASA undertook its first planetary defense mission with the Double Asteroid Redirection Test (DART). The goal was to divert the moonlet Dimorphos from its orbit, demonstrating that an asteroid could be redirected in the case of a catastrophic course toward Earth.

The spacecraft’s impact, while altering the moonlet’s orbit, also resulted in the dispersal of 37 boulders from its surface. Some of these space rocks are as wide as 22 feet off its surface.

The DART mission was watched intently across the globe on September 26, 2022. The spacecraft successfully shifted Dimorphos’s orbit from an original 11 hours and 55 minutes to 11 hours and 23 minutes post-impact.

Aug 14, 2023

Scientists find a way to turn methane into energy, materials

Posted by in categories: energy, nanotechnology

The polluting emission is rarely recycled and does much damage to the planet.

Methane is an extremely harmful emission and one that is rarely recycled. Now, researchers from the University of Central Florida have found a way to transform it into energy and materials.

This is according to a press release by the institution published on Friday.

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Aug 12, 2023

MIT researchers turned concrete into an energy-storing supercapacitor with one cheap additive

Posted by in categories: energy, materials

What if you could turn concrete into a viable and effective energy storage option? While that might seem a bit out-of-this-world, that’s exactly what MIT researchers have managed to do, according to reports from New Atlas. A paper on the new concrete supercapacitor is also available in the Proceedings of the National Academy of Sciences (PNAS).

According to this research, MIT researchers were able to take an idea from 2021 – which said that you could store useful amounts of energy in concrete – and scale it up effectively by simply adding a single additive to the concrete mix. The mixture thus became a combination of concrete, water, and carbon black.

When combined, the three components allowed the researchers to create an energy-storing concrete supercapacitor that was easy to scale up, with it only requiring a change from “1-millimeter-thick electrodes to 1-meter-thick electrodes” to go from powering simple things like LED lights to full-blown buildings and homes.

Aug 12, 2023

Zap with Microwaves to Reverse Spin

Posted by in categories: energy, quantum physics

Irradiating a uniaxial magnetic system with a specific sequence of microwave pulses can induce in the system quantum oscillations that cause the material’s spins to flip back and forth.

To make higher-density magnetic data systems, researchers are looking to crystalline materials that have switchable magnetic orientations. But for some of these materials, switching the magnetization direction—for example from spin-up to spin-down—requires overcoming a large energy barrier. Now Seiji Miyashita at the University of Tokyo and Bernard Barbara of the Institut Néel, CNRS Grenoble, France, predict that experimentalists could reverse a material’s magnetization by applying to it a specific sequence of microwave or optical-frequency pulses [1]. The approach could find applications in quantum information storage.

To reverse the spin of a magnetic material, researchers can apply high temperatures or high magnetic fields to push the system over the potential energy barrier that separates its spin states. Another option is to induce resonant quantum tunneling to move electrons through the barrier. Miyashita and Barbara propose a further method that bypasses the constraints associated with the application of intense magnetic fields in these previous methods.

Aug 10, 2023

Electrochemical process could boost efficiency of capturing carbon directly from air

Posted by in categories: chemistry, energy, engineering

A team from the University of Toronto’s Faculty of Applied Science & Engineering has invented a device that leverages electrochemistry to increase the efficiency of direct air carbon capture. Their alternative strategy aims to accelerate the widespread adoption of this emerging technology.

“The technology required to pull carbon directly out of the air has been developing for decades, but the field is now accelerating with governments and industry investing in the infrastructure required to actually do this at scale,” says David Sinton, a professor in the faculty’s department of mechanical and and senior author on a paper published in Joule that outlines the new technique.

“One key barrier is that current processes require a lot of energy, and indeed emit a fair amount of carbon themselves,” says Sinton, who holds a Canada Research Chair in microfluidics and energy and is academic director of the Climate Positive Energy Initiative, one of U of T’s Institutional Strategic Initiatives.

Aug 10, 2023

Iron And Rust Could Be The Secret To Storing Clean Power For Days

Posted by in categories: energy, finance

Form Energy, led by a former Tesla executive and backed by Bill Gates’s Breakthrough Energy Ventures, sees the cheap metal as a solution to banking surplus green power.

Aug 10, 2023

Remarkable: For the Second Time, U.S. Scientists Have Achieved Fusion Ignition

Posted by in category: energy

And the results are even more spectacular.

Aug 9, 2023

More Efficient Than Natural Photosynthesis — New Photocatalytic System Converts Carbon Dioxide Into Valuable Fuel

Posted by in category: energy

A joint research team from the City University of Hong Kong (CityU) and collaborators recently developed a stable artificial photocatalytic system that is more efficient than natural photosynthesis.

Photosynthesis is how plants and some microorganisms use sunlight to synthesize carbohydrates from carbon dioxide and water.

Aug 9, 2023

Solar Surprise: Scientists Discover Unprecedented High-Energy Light Coming From the Sun

Posted by in category: energy

Nisa and her colleagues began collecting data in 2015. In 2021, the team had accrued enough data to start examining the sun’s gamma rays with sufficient scrutiny.

“After looking at six years’ worth of data, out popped this excess of gamma rays,” Nisa said. “When we first saw it, we were like, ‘We definitely messed this up. The sun cannot be this bright at these energies.’”

The sun gives off a lot of light spanning a range of energies, but some energies are more abundant than others.

Aug 8, 2023

Superconductor LK99 Update

Posted by in categories: energy, internet, satellites

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Today I have an update on the reproduction efforts for the supposed room temperature superconductor, LK 99, the first images from the Euclid mission, more trouble with Starlink satellites, first results from a new simulation for cosmological structure formation, how to steer drops with ultrasound, bacteria that make plastic, an improvement for wireless power transfer, better earthquake warnings, an attempt to predict war, and of course the telephone will ring.

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