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Archive for the ‘materials’ category: Page 109

Mar 11, 2023

Researchers Decipher the Inner Workings of a Bacterium

Posted by in categories: biotech/medical, materials

A group led by Professor Ralf Rabus, a microbiologist at the University of Oldenburg, and his Ph.D. student Patrick Becker has made significant advancements in comprehending the cellular processes of a widespread environmental bacterium. The team conducted an extensive analysis of the entire metabolic network of the bacterial strain Aromatoleum aromaticum EbN1T and utilized the findings to construct a metabolic model that allows them to forecast the growth of these microbes in various environmental conditions.

According to their report in the journal mSystems, the researchers uncovered surprising mechanisms that enable the bacteria to adjust to fluctuating environmental conditions. These results are crucial for the study of ecosystems, where the Aromatoleum strain, as a representative of a significant group of environmental bacteria, can act as a model organism. The findings could also have implications for the cleanup of contaminated sites and biotechnological applications.

The studied bacterial strain specializes in the utilization of organic substances that are difficult to break down and is generally found in soil and in aquatic sediments. The microbes thrive in a variety of conditions including oxygen, low-oxygen, and oxygen-free layers, and are also extremely versatile in terms of nutrient intake. They metabolize more than 40 different organic compounds including highly stable, naturally occurring substances such as components of lignin, the main structural material found in wood, and long-lived pollutants and components of petroleum.

Mar 11, 2023

Bizarre Properties of Strange Metals Unlocked by Physics Experiment

Posted by in categories: materials, physics

Physicists at the University of Cincinnati have contributed to an international experiment on strange metals made from an alloy of ytterbium, a rare earth metal. The study involved firing radioactive gamma rays at the strange metal to observe its unusual electrical behavior. The experiment revealed unusual fluctuations in the strange metal’s electrical charge, furthering the understanding of the bizarre behavior of strange metals that operate outside the normal rules of electricity.

International team finds unusual electrical behavior in material that holds promise for new technology.

Physicists at the University of Cincinnati (UC) are learning more about the bizarre behavior of “strange metals,” which operate outside the normal rules of electricity.

Mar 11, 2023

Scientists Create “Reddmatter” — Game-Changing Room-Temperature Superconductor

Posted by in category: materials

Researchers have not only raised the temperature, but also lowered the pressure required to achieve superconductivity. In a historic achievement, University of Rochester researchers have created a superconducting material at both a temperature and pressure low enough for practical applications.

Mar 10, 2023

New Superconducting Material Could Transform Electronics — If It Works

Posted by in categories: energy, materials

Superconductivity is an incredible property of certain materials with exciting consequences. Once reached, for example, said materials can conduct electricity without resistance, so no loss of energy. But most materials are superconductive at extremely low temperatures. The quest for a room-temperature superconductor is ongoing, and is not without a bit of scientific drama.

A few years ago, there was a claim of a room-temperature superconductor that became supercritical at a temperature of 15°C (59°F), but required a pressure of 2.5 million atmospheres. That’s on the order of the pressure you might find in the core of a rocky planet, and can be achieved by squeezing materials between two diamonds. Other scientists raised issues with the way the numbers were handled, including an accusation of the data used being fabricated.

The paper was retracted by the journal Nature last September, and the team claims they are ready to resubmit that work. They have also announced a brand-new material with even more extraordinary properties (if confirmed). The new substance is described as a nitrogen-doped lutetium hydride that becomes superconductive up to 20.5°C (69°F) and at a much lower pressure, roughly 10,000 atmospheres. Quite the improvement.

Mar 9, 2023

‘Red matter’ superconductor could transform electronics — if it works

Posted by in categories: electronics, materials

Researchers have long attempted to produce a superconductor that works at room temperature and at a relatively low pressure. A team now claims that its material, dubbed “red matter”, has these properties.

By Leah Crane

Mar 8, 2023

Scientists discover superconducting material that could bring total revolution in energy and electronics

Posted by in categories: energy, materials

Scientists have discovered a new material that could be set to change the entire world. Researchers say they have created a superconducting material that works at both a temperature and a pressure low enough to actually use it in practical situations. It reaches a breakthrough that scientists have been chasing for more than a century, in making a material that is able to transmit electricity without resistance, and pass magnetic fields around the material.

Mar 8, 2023

Astronomers detect water molecules swirling around a star

Posted by in categories: materials, space

A nearby star system is helping astronomers unravel the mystery of how water appeared in our solar system billions of years ago.

Scientists observed a young star, called V883 Orionis, located 1,300 light-years away using the Atacama Large Millimeter/submillimeter Array of telescopes, or ALMA, in northern Chile.

The star is surrounded by a planet-forming disk of cloud of gas and dust leftover from when the star was born. Eventually, material in the disk comes together to form comets, asteroids and planets over millions of years.

Mar 8, 2023

Analyze This: Algae behind blue-glowing waves light up a new device

Posted by in category: materials

Some algae glow blue when they experience forces. Held in transparent plastic, they now make devices light up in response to gentle pushes and tugs.

Mar 7, 2023

The mushrooms you can wear and build with

Posted by in category: materials

A growing number of firms are turning fungi roots into clothing and building material.

Mar 6, 2023

The large-area synthesis and transfer of multilayer hBN for fabricating 2D electronics

Posted by in categories: materials, physics

Researchers at Kyushu University, the National Institute of Advanced Industrial Science and Technology (AIST) and Osaka University in Japan have recently introduced a new strategy for synthesizing multi-layer hexagonal boron nitride (hBN), a material that could be used to integrate different 2D materials in electronic devices, while preserving their unique properties. Their proposed approach, outlined in a paper published in Nature Electronics, could facilitate the fabrication of new highly performing graphene-based devices.

“The atomically flat 2D insulator hBN is a key material for the integration of 2D materials into ,” Hiroki Ago, one of the researchers who carried out the study, told Tech Xplore. “For example, the highest carrier mobility in is achieved only when it is sandwiched by multilayer hBN. Superconductivity observed in twisted also needs multilayer hBN to isolate from environment.”

In addition to its value for fabricating -based devices, hBN can also be used to integrate (TMDs) in devices, achieving strong photoluminescence and high carrier mobility. It can also be valuable for conducting studies focusing on moiré physics.