Archive for the ‘energy’ category: Page 7

Mar 25, 2023

Developing smart light traps inspired by photosynthesis

Posted by in categories: chemistry, energy, nanotechnology, sustainability

Plants use photosynthesis to harvest energy from sunlight. Now researchers at the Technical University of Munich (TUM) have applied this principle as the basis for developing new sustainable processes which in the future may produce syngas (synthetic gas) for the large-scale chemical industry and be able to charge batteries.

Syngas, a mixture of carbon monoxide and hydrogen, is an important intermediate product in the manufacture of many chemical starter materials such as ammonia, methanol and synthetic hydrocarbon fuels. “Syngas is currently made almost exclusively using fossil ,” says Prof. Roland Fischer from the Chair of Inorganic and Organometallic Chemistry.

A yellow powder, developed by a research team led by Fischer, is to change all that. The scientists were inspired by photosynthesis, the process plants use to produce chemical energy from light. “Nature needs carbon dioxide and water for photosynthesis,” says Fischer. The nanomaterial developed by the researchers imitates the properties of the enzymes involved in photosynthesis. The “nanozyme” produces syngas using carbon dioxide, water and light in a similar manner.

Mar 25, 2023

Silver sawtooth creates valley-coherent light for nanophotonics

Posted by in categories: energy, quantum physics

Scientists at the University of Groningen used a silver sawtooth nanoslit array to produce valley-coherent photoluminescence in two-dimensional tungsten disulfide flakes at room temperature. Until now, this could only be achieved at very low temperatures. Coherent light can be used to store or transfer information in quantum electronics. This plasmon-exciton hybrid device is promising for use in integrated nanophotonics (light-based electronics). The results were published in Nature Communications on 5 February.

Tungsten disulfide has interesting electronic properties and is available as a 2-D material. “The electronic structure of monolayer shows two sets of lowest energy points or valleys,” explains Associate Professor Justin Ye, head of the Device Physics of Complex Materials group at the University of Groningen. One possible application is in photonics, as it can emit light with valley-dependent circular polarization—a new degree of freedom to manipulate information. However, valleytronics requires coherent and polarized light. Unfortunately, previous work showed that photoluminescence polarization in tungsten disulfide is almost random at .

Mar 24, 2023

Enzyme That Creates Energy From Air Is Sort of Groundbreaking

Posted by in categories: bitcoin, cryptocurrencies, energy

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Hello and welcome! My name is Anton and in this video, we will talk about a potential discovery of a new way to generate energy using an unusual protein found in bacteria.
#bacteria #energy #enzymes.
0:00 Source of electricity we currently use.
3:15 New discovery: incredible enzyme from bacteria.
4:07 More about the Mycobacterium.
5:20 Enzyme that they use to generate energy.
6:50 More about the protein and what it could do for us.
8:45 Additional questions.

Continue reading “Enzyme That Creates Energy From Air Is Sort of Groundbreaking” »

Mar 24, 2023

Using high-precision quantum chemistry to study super-efficient energy transfer in photosynthesis

Posted by in categories: chemistry, energy, quantum physics

Photosynthesis drives all life on Earth. Complex processes are required for the sunlight-powered conversion of carbon dioxide and water to energy-rich sugar and oxygen. These processes are driven by two protein complexes, photosystems I and II. In photosystem I, sunlight is used with an efficiency of almost 100%. Here a complex network of 288 chlorophylls plays the decisive role.

A team led by LMU chemist Regina de Vivie-Riedle has now characterized these chlorophylls with the help of high-precision quantum chemical calculations—an important milestone toward a comprehensive understanding of energy transfer in this system. This discovery may help exploit its efficiency in artificial systems in the future.

The chlorophylls in I capture sunlight in an antenna complex and transfer the energy to a reaction center. There, the is used to trigger a redox process—that is to say, a whereby electrons are transferred. The quantum yield of photosystem I is almost 100%, meaning that almost every absorbed photon leads to a redox event in the reaction center.

Mar 24, 2023

Powerful lasers herald age of new human adventures

Posted by in category: energy

Hugely powerful lasers are shining light on the cosmos and can generate energy using the same process that occurs in the scorching interior of stars.

Mar 24, 2023

This oxygen-ion battery could be the battery of the future

Posted by in categories: energy, innovation

A team of researchers at UT Wein in Austria have developed an innovative oxygen-ion battery that is cleaner and safer than lithium-ion.

Researchers at Technische Universität Wien (TU Wien) in Vienna, Austria, have made an oxygen-ion battery that could be used in large energy storage systems instead of lithium-ion batteries. Even though the energy density of an oxygen-ion battery is not quite as high as that of a lithium-ion battery, it has some important advantages.

Continue reading “This oxygen-ion battery could be the battery of the future” »

Mar 24, 2023

Scientists discover easy way to make atomically-thin metal layers for new technology

Posted by in categories: energy, materials

The secret to a perfect croissant is the layers—as many as possible, each one interspersed with butter. Similarly, a new material with promise for new applications is made of many extremely thin layers of metal, between which scientists can slip different ions for various purposes. This makes them potentially very useful for future high-tech electronics or energy storage.

Until recently, these materials—known as MXenes, pronounced “max-eens”—were as labor-intensive as good croissants made in a French bakery.

But a new breakthrough by scientists with the University of Chicago shows how to make these MXenes far more quickly and easily, with fewer toxic byproducts.

Mar 23, 2023

A New Kind of Battery—Oxygen-Ion—Could Change Energy

Posted by in categories: energy, materials


It’s incredibly rechargeable, made from safe materials, and—get this—not going to catch on fire.

Mar 23, 2023

Startup’s 3D-printed rocket delivers stunning night launch but fails to reach orbit

Posted by in categories: energy, satellites

(CNN) — Startup Relativity Space sent what it’s calling the “world’s first 3D-printed rocket” toward space on Wednesday, vaulting it into the upper reaches of the atmosphere. Though, it suffered an engine issue after launch and failed to reach orbit.

Terran 1, a 110-foot-tall (33.5-meter) vehicle designed to haul lightweight satellites into orbital space, lifted off from Cape Canaveral Space Force Station on Florida’s eastern coast at just before 11:30 pm ET. The rocket, powered by super-chilled methane and oxygen, burned a bright blue-green against the night sky.

After the first stage of the rocket — the bottommost portion of the rocket that gives the initial thrust at liftoff — expended its fuel, it detached from the rocket’s upper stage. But the engine meant to propel that portion appeared to ignite only briefly, leaving the rocket without enough power to reach orbit.

Mar 21, 2023

Watch: NASA’s Fermi captures cosmic fireworks invisible to the bare eye

Posted by in categories: energy, space

The animation shows a subset of more than 1,500 light curves collected by the Large Area Telescope over nearly 15 years in space.

NASA has released an intriguing animated video of the sky in gamma rays, the “highest-energy form of light”. Captured by the Large Area Telescope (LAT) aboard NASA’s Fermi Gamma-ray Space Telescope, the animation shows activity during observations from February 2022 to February 2023.

According to a press release, the “pulsing circles represent just a subset of more than 1,500 light curves – records of how sources change in brightness over time – collected by the LAT over nearly 15 years in space”. The LAT detects gamma rays with energies ranging from 20 million to over 300 billion electron volts.

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