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Category: energy – Page 2

Combustion engines, the engines in gas-powered cars, only use a quarter of the fuel’s potential energy while the rest is lost as heat through exhaust.

Now, a study published in ACS Applied Materials & Interfaces demonstrates how to convert exhaust heat into electricity. The researchers present a prototype thermoelectric generator system that could reduce fuel consumption and carbon dioxide emissions—an opportunity for improving sustainable energy initiatives in a rapidly changing world.

Fuel inefficiency contributes to greenhouse gas emissions and underscores the need for innovative waste-heat recovery systems. Heat-recovery systems, called thermoelectric systems, use semiconductor materials to convert heat into electricity based on a temperature difference.

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WCTU CLEVELAND 13 — A new study suggests that faster-than-light travel, once thought to be purely science fiction, may be achievable sooner than expected through the concept of warp drive, challenging Einstein’s Theory of Relativity. This breakthrough builds on the Alcubierre drive model proposed in 1994, which theorizes that a spacecraft could travel faster than light by contracting space-time ahead of it while expanding space-time behind it.

The idea was first introduced by Mexican theoretical physicist Miguel Alcubierre, who suggested that a space-time bubble could allow for faster-than-light travel without violating the laws of physics. However, his model was initially dismissed due to its extreme energy requirements.

Joseph Agnew, a researcher from the University of Alabama, has been re-evaluating the mathematical foundations of Alcubierre’s theory. “If you fulfill all the energy requirements, they can’t prove that it doesn’t work,” Agnew stated in a university press release. His work has rekindled interest in the feasibility of warp drive by focusing on the possibility of warping space-time around a craft.

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The year one hundred two thousand twenty-three. A giant meteorite the size of Pluto is approaching the Solar System. It flies straight to Earth. But as the meteorite crosses Saturn’s orbit, a swarm of miner probes approaches it. The scan revealed no minerals on the object, so the searches returned with nothing.
Meanwhile, the Space Security Center in Alaska military personnel are setting up a laser. The Solar System witnesses a sudden flare and nothing remains of the dwarf-sized meteorite. Now, unless hydrogen miners on Jupiter post videos of another annihilation on social media… This is what the world will look like when humanity finally becomes a Type Two civilization on the Kardashev scale. We’ll have almost infinite energy reserves, the ability to prepare for interstellar flights, or to instantly destroy any threat. But will humanity really be safe? And what can ruin a Type Two civilization?

#eldddir_space #eldddir_earth #eldddir_homo #eldddir_animals.
#eldddir_disaster #eldddir_ocean #eldddir_bombs #eldddir_future #eldddir_tech #eldddir_jupiter #eldddir_mars #eldddir_spacex #eldddir_rockets

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Researchers at the University of Bayreuth present novel electrospun nonwovens in Science Advances that exhibit an unusual combination of high electrical conductivity and extremely low thermal conductivity.

The nonwovens represent a breakthrough in : it has been possible to decouple electrical and based on a simple-to-implement material concept. The nonwovens are made of carbon and silicon-based ceramic via electrospinning process and are attractive for technological applications, for example, in and electronics. They can be manufactured and processed cost-effectively on an industrial scale.

Normally, is associated with , and goes with low electrical conductivity. However, in many high-tech industries, there is growing interest in multifunctional materials that that combine good electric with low thermal transport.

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This approach is not only faster and more energy-efficient but also delivers precise control over the material’s optical properties.

Light-Powered Quantum Dot Tuning

Researchers at north carolina state university.

Founded in 1887 and part of the University of North Carolina system, North Carolina State University (also referred to as NCSU, NC State, or just State) is a public land-grant research university in Raleigh, North Carolina. NC State offers a wide range of academic programs and disciplines, including the humanities, social sciences, natural sciences, engineering, business, and education. It is known for its strong programs in engineering, science, and technology and is a leader in research and innovation. It forms one of the corners of the Research Triangle together with Duke University in Durham and The University of North Carolina at Chapel Hill.

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For nearly two decades, scientists have been puzzled by the corrosion of negatively polarized platinum electrodes, a costly issue for water electrolyzers used in hydrogen production and electrochemical sensors.

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Now, researchers at the Department of Energy’s SLAC National Accelerator Laboratory and Leiden University have identified the culprit, paving the way for cheaper hydrogen energy and more reliable sensors.

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Among the most intriguing ideas is warp drive—a concept that challenges Einstein’s Theory of Relativity by suggesting faster-than-light travel might be possible by warping space and time.

In 1994, theoretical physicist Miguel Alcubierre introduced the idea of a space-time bubble that could contract distances ahead of a spacecraft while expanding them behind it. His model, known as the Alcubierre drive, suggested a loophole in relativity that could, in theory, allow faster-than-light travel. Yet, most scientists dismissed it as impossible due to extreme energy requirements.

Not everyone was ready to abandon the idea. Joseph Agnew, an undergraduate at the University of Alabama, set out to explore whether the theory held up mathematically. “If you fulfill all the energy requirements, they can’t prove that it doesn’t work,” he stated in a university press release.

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