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Archive for the ‘materials’ category: Page 63

Apr 12, 2023

Rapid alternating polarity brings new life to 189-year-old electrochemical reaction

Posted by in categories: chemistry, materials

Nearly 200 years since its discovery, industry rarely uses the carbon–carbon bond-forming Kolbe reaction – but now US researchers have shown it can sustainably make valuable substances.

Phil Baran’s team at Scripps Research Institute in La Jolla has done away with high voltages and platinum electrodes best established in the Kolbe reaction. In doing so, the researchers have made it much more versatile. ‘The most important feature is the ability to take waste or similarly priced products convert them into extremely high value materials,’ Baran tells Chemistry World.

Apr 12, 2023

A New Kind of Time Crystal Has Been Created That Does Interesting Things to Light

Posted by in categories: materials, particle physics

Scientists are still getting to grips with the ins and outs of strange materials known as time crystals; structures that buzz with movement for eternity. Now a new variety might help deepen our understanding of the perplexing state of matter.

Just as regular crystals are atoms and molecules that repeat over a volume of space, time crystals are collections of particles that tick-tock in patterns over a duration of time in ways that initially seem to defy science.

Theorized in 2012 before being observed in the lab for the first time just four years later, researchers have been busy tinkering with the structures to probe deeper foundations of particle physics and uncover potential applications.

Apr 11, 2023

What’s Holding Back Solar for Homes in the United States?

Posted by in category: materials

The industry, particularly in the U.S. is undergoing significant growing pains with demand outstripping supply in materials and personnel.

Apr 10, 2023

Curving the Fabric of Space — Scientists Develop a New Quantum Material

Posted by in categories: materials, quantum physics

An international team, headed by the University of Geneva (UNIGE), has created a quantum material that allows the fabric of the space inhabited by electrons to be curved on demand.

The advent of cutting-edge information and communication technologies presents scientists and industry with new hurdles to overcome. To address these challenges, designing new quantum materials, which derive their remarkable characteristics from the principles of quantum physics, is the most promising approach.

A global collaboration headed by the University of Geneva (UNIGE) and featuring researchers from the universities of Salerno, Utrecht, and Delft, has developed a material that allows for the control of electron dynamics by curving the fabric of space in which they evolve. This advancement holds promise for future electronic devices, particularly in the field of optoelectronics. The findings were published in the journal Nature Materials.

Apr 9, 2023

The Unfolding of a New Era in Robotics

Posted by in categories: materials, robotics/AI

Origami robots are autonomous machines that are constructed by folding two-dimensional materials into complex, functional three-dimensional structures. These robots are highly versatile. They can be designed to perform a wide range of tasks, from manipulating small objects to navigating difficult terrain. Their compact size and flexibility allow them to move in ways that traditional robots cannot, making them ideal for use in environments that are hard to reach.

Another notable feature of origami-based robots is their low cost. Because they are constructed using simple materials and techniques, they can be produced relatively inexpensively. This makes them an attractive option for many researchers and companies looking to develop new robotics applications.

There are many potential applications for origami robots. They could be used in search and rescue missions, where their small size and flexibility would allow them to navigate through rubble and debris. They could also be used in manufacturing settings, where their ability to manipulate small objects could be put to use in assembly lines.

Apr 7, 2023

Computer hardware company MSI hacked, BIOS source code and private keys stolen

Posted by in categories: cybercrime/malcode, materials

According to reports, the Taiwanese computer hardware company MSI (Micro-Star International) was recently joined to the list of victims of a new ransomware gang that goes by the name “Money Message.” The perpetrators of the cybercrime say that they have taken source code along with other critical material from the company’s network. MSI is a world-renowned leader in the production of computer components, such as motherboards, graphics cards, desktop computers, laptop computers, servers, and other electronic equipment. It brings in more than $6.5 billion in income every year.

Money Message has included MSI on the website that it maintains for the publication of leaked material and has published images of the company’s CTMS and ERP databases in addition to files that include software source code, private keys, and BIOS firmware. If MSI does not comply with the threat actors’ demand for a ransom payment, they will now threaten to release all of the information that was taken.

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Apr 7, 2023

How amber creates exquisite fossils

Posted by in category: materials

A warm-hued material prized by jewelry makers, amber takes more than 40,000 years to form. See pictures of some of the finest specimens.

Apr 6, 2023

Trillionth-of-a-Second Shutter Speed Camera Catches Chaos in Action

Posted by in categories: electronics, materials

To take a picture, the best digital cameras on the market open their shutter for around around one four thousandths of a second.

To snapshot atomic activity, you’d need a shutter that clicks a lot faster.

Now scientists have come up with a way of achieving a shutter speed that’s a mere trillionth of a second, or 250 million times faster than those digital cameras. That makes it capable of capturing something very important in materials science: dynamic disorder.

Apr 5, 2023

Predicting Ferroelectricity with Group Theory

Posted by in categories: materials, particle physics

Two atom-thick layers of the same crystalline material can be stacked on top of each other in ways that yield ferroelectricity.

Apr 5, 2023

NASA’s DAGGER could give advance warning of the next big solar storm

Posted by in categories: materials, satellites

There’s enough trouble on this planet already that we don’t need new problems coming here from the sun. Unfortunately, we can’t yet destroy this pitiless star, so we are at its mercy. But NASA at least may soon be able to let us know when one of its murderous flares is going to send our terrestrial systems into disarray.

Understanding and predicting space weather is a big part of NASA’s job. There’s no air up there, so no one can hear you scream, “Wow, how about this radiation!” Consequently, we rely on a set of satellites to detect and relay this important data to us.

One such measurement is of solar wind, “an unrelenting stream of material from the sun.” Even NASA can’t find anything nice to say about it! Normally this stream is absorbed or dissipated by our magnetosphere, but if there’s a solar storm, it may be intense enough that it overwhelms the local defenses.

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