Archive for the ‘energy’ category: Page 21

Dec 14, 2023

Creating Fast Bunches of Electrons with Lasers

Posted by in category: energy

The judicious shaping of a tube of plasma by one laser enhances the properties of electron bunches accelerated by another.

The idea was first proposed in 1979: use a laser to separate a plasma’s electrons from its ions, thereby creating an electric field that accelerates electrons to giga-electron-volt (GeV) energies over a few micrometers. Turning that idea into useful devices requires bestowing electrons with not just high energy but also with a tight spread in energy. Now a team led by Simon Hooker of Oxford University, UK, has demonstrated a plasma-preparation technique that yields 1.2 GeV electrons with an energy spread of 4.5% [1]. Although that performance falls short of conventional accelerators, further improvement is possible.

In general, the more intense the laser and the denser the plasma, the greater the electron acceleration. But if the laser–plasma interaction is pushed up into the nonlinear regime, the acceleration becomes unruly. Working at lower intensities and densities requires sustaining the acceleration for longer. It also requires that the electrons in the lowest-density part of the plasma are accelerated first. That way, the exiting electrons form a tight bunch.

Dec 14, 2023

New quantum batteries charging break time and causality rules: Study

Posted by in categories: energy, quantum physics, sustainability

Quantum physics, the science of the very small, often challenges our common sense and intuition. But it also offers new possibilities for technological innovations that go beyond the limits of classical physics. One of these possibilities is the quantum battery, which uses quantum phenomena to store, transfer, and deliver energy more effectively than conventional batteries.

Quantum batteries

Quantum batteriesQuantum batteries are not yet ready for commercial use. Still, they can revolutionize fields that require low-power and portable energy sources, such as smart devices, sensors, and even electric vehicles.

Dec 14, 2023

Can Signs of Life be detected from Saturn’s Frigid Moon?

Posted by in categories: energy, physics, space

Enceladus’ ice plumes may hold the building blocks of life. Researchers have shown unambiguous laboratory evidence that amino acids transported in the ice plumes of Saturn’s moon, Eceladus, can survive impact speeds of up to 4.2 km/s, supporting their detection during sampling by spacecraft.

As astrophysics technology and research continue to advance, one question persists: is there life elsewhere in the universe? The Milky Way galaxy alone has hundreds of billions of celestial bodies, but scientists often look for three crucial elements in their ongoing search: water, energy and organic material. Evidence indicates that Saturn’s icy moon Enceladus is an ‘ocean world’ that contains all three, making it a prime target in the search for life.

During its 20-year mission, NASA’s Cassini spacecraft discovered that ice plumes spew from Enceladus’ surface at approximately 800 miles per hour (400 m/s). These plumes provide an excellent opportunity to collect samples and study the composition of Enceladus’ oceans and potential habitability.

Dec 14, 2023

Miles Beneath Our Feet: The Superhot Energy Source That Could Change Everything

Posted by in categories: energy, engineering

In an indication of growing interest in the holy grail of geothermal energy—tapping into the superhot rock miles below our feet—18 papers on the topic were presented over multiple sessions at a recent major conference on the overall geothermal industry.

“By driving down costs and making large-scale geothermal power available nearly anywhere, Superhot Rock energy has the potential to disrupt and revolutionize the energy system.” That’s according to a description of the sessions on Technological, Engineering, and Geological Advances in Superhot Geothermal presented at the 2023 Geothermal Rising Conference held over four days in October.

“For me, a pretty big highlight of Geothermal Rising 2023 was the increased focus on superhot rock geothermal through multiple presentations from around the world,” says Matt Houde, co-founder and project manager at Quaise Energy.

Dec 13, 2023

Chinese hackers allegedly target US infrastructure as ‘Volt Typhoon’

Posted by in categories: cybercrime/malcode, energy

The intrusions are part of a broader effort to develop ways to sow chaos or snarl logistics in the event of a U.S.-China conflict in the Pacific, officials say.

While both China and the United States of America have accused each other of conducting cyberattacks for years now, recently, China’s People’s Liberation Army allegedly involved in a series of cyber intrusions referred to as “Volt Typhoon.”

The Washington Post reported earlier this morning that these attacks targeted critical American infrastructure, including water utility systems in Hawaii, major ports on the West Coast, and an oil and gas pipeline, according to experts.

Continue reading “Chinese hackers allegedly target US infrastructure as ‘Volt Typhoon’” »

Dec 12, 2023

Unveiling the Tesla Cybertruck: A Revolutionary Vehicle from Tesla Executives

Posted by in categories: energy, engineering, sustainability, transportation

Sandy talks Cybertruck with 5 Tesla Execs! Lars Moravy: Head of Vehicle Engineering Franz von Holzhausen: Head of Design Drew Baglino: Head of Powertrain (battery + motors) and Energy Pete Bannon: Head of Low Voltage David Lau: Head of Software Munro Live is a YouTube channel that features Sandy Munro and other engineers from Munro & Associates.

Dec 12, 2023

Is Information Fundamental?

Posted by in categories: energy, space

What if the fundamental “stuff” of the universe isn’t matter or energy, but information?

That’s the idea some theorists are pursuing as they search for ever-more elegant and concise descriptions of the laws that govern our universe. Could our universe, in all its richness and diversity, really be just a bunch of bits?

To understand the buzz over information, we have to start at the beginning: What is information?

Dec 12, 2023

How would nanobots disassemble something on a molecular level

Posted by in categories: energy, nanotechnology

I’ve been studying this topic for use in a story I’m working on and I’ve come across various videos and interviews on the topic, but they all seem mostly concerned with assembly of larger objects.

I was just curious if the same actions that would assemble an object could be reversed to disassemble it, or if there were other necessary actions that needed to be taken. I understand that energy needs to be put in to break a molecular bond, so is that something that would have to be taken into account as well?

Also, as a side note, the current idea is to have the nanobots be mostly carbon constructs, if that affects the way things work.

Dec 11, 2023

Power Play: How Electrochemistry Is Winning the Green Game

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

New research on electrochemical reactions highlights the critical role of electrolyte ions, aiding in the advancement of sustainable energy technologies.

Electrochemical reactions are central to the green transition. These reactions use the electric current and potential difference to carry out chemical reactions, which enables binding and realizing electric energy from chemical bonds. This chemistry is the basis for several applications, such as hydrogen technology, batteries, and various aspects of circular economy.

Developments and improvement in these technologies require detailed insight into the electrochemical reactions and different factors impacting them. Recent studies have shown that besides the electrode material also the used solvent, its acidity, and the used electrolyte ions crucially impact the efficiency of electrochemical reactions. Therefore, recent focus has shifted to studying how the electrochemical interfaces, i.e. the reaction environment at the electrode and the electrolyte interface shown in Figure 1, impact the outcome of electrochemical reactions.

Dec 11, 2023

Battery Breakthrough: Scientists Reveal the Mechanics of Solid-State Energy

Posted by in categories: energy, materials

When electricity flows through a battery, the materials inside it gradually wear down. The physical forces of stress and strain also play a role in this process, but their exact effects on the battery’s performance and lifespan are not completely known.

A team led by researchers at the Department of Energy’s Oak Ridge National Laboratory developed a framework for designing solid-state batteries, or SSBs, with mechanics in mind. Their paper, published in Science, reviewed how these factors change SSBs during their cycling.

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