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Archive for the ‘materials’ category: Page 191

Oct 7, 2020

The discovery of triplet spin superconductivity in diamonds

Posted by in categories: materials, nanotechnology

Diamonds have a firm foothold in our lexicon. Their many properties often serve as superlatives for quality, clarity and hardiness. Aside from the popularity of this rare material in ornamental and decorative use, these precious stones are also highly valued in industry where they are used to cut and polish other hard materials and build radiation detectors.

More than a decade ago, a new property was uncovered in when high concentrations of boron are introduced to it: superconductivity. Superconductivity occurs when two electrons with opposite spin form a pair (called a Cooper pair), resulting in the electrical resistance of the material being zero. This means a large supercurrent can flow in the material, bringing with it the potential for advanced technological applications. Yet, little work has been done since to investigate and characterize the nature of a diamond’s superconductivity and therefore its potential applications.

New research led by Professor Somnath Bhattacharyya in the Nano-Scale Transport Physics Laboratory (NSTPL) in the School of Physics at the University of the Witwatersrand in Johannesburg, South Africa, details the phenomenon of what is called “triplet superconductivity” in diamond. Triplet superconductivity occurs when electrons move in a composite spin state rather than as a single pair. This is an extremely rare, yet efficient form of superconductivity that until now has only been known to occur in one or two other materials, and only theoretically in diamonds.

Oct 7, 2020

Terahertz zaps alter gene activity in stem cells

Posted by in categories: biotech/medical, materials

Terahertz light pulses change gene expression in stem cells, report researchers from Kyoto University’s Institute for Integrated Cell-Material Sciences (iCeMS) and Tokai University in Japan in the journal Optics Letters. The findings come thanks to a new tool, with implications for stem cell research and regenerative therapy development.

Terahertz waves fall in the far infrared/microwave part of the electromagnetic spectrum and can be produced by powerful lasers. Scientists have used terahertz pulses to control the properties of solid-state materials. They also have potential for manipulating living cells, as they don’t damage them the way that ultraviolet or infrared light does. Research so far has led to contradictory findings about their effects on cells, possibly because of the way the experiments have been conducted.

ICeMS microengineer Ken-ichiro Kamei and physicist Hideki Hirori worked with colleagues to develop a better tool for investigating what happens when terahertz pulses are shone on . The apparatus overcomes issues with previous techniques by placing cells in tiny microwells that have the same area as the terahertz light.

Oct 5, 2020

Single‐Atom Catalytic Materials for Advanced Battery Systems

Posted by in categories: materials, particle physics

Single‐atom catalytic materials with atomic sizes, good conductivity, and individual catalytic sites are designed for advanced battery systems, including lithium-sulfur batteries, zinc-air batteries,…

Oct 4, 2020

Researchers create fly-catching robots

Posted by in categories: materials, robotics/AI

An international team of Johannes Kepler University researchers is developing robots made from soft materials. A new article in the journal Communications Materials demonstrates how these kinds of soft machines react using weak magnetic fields to move very quickly—even grabbing a quick-moving fly that has landed on it.

When we imagine a moving machine, such as a robot, we picture something largely made out of hard materials, says Martin Kaltenbrunner. He and his team of researchers at the JKU’s Department of Soft Matter Physics and the LIT Soft Materials Lab have been working to build a -based system. When creating these kinds of systems, there is a basic underlying idea to create conducive conditions that support close robot-human interaction in the future—without the solid machine physically harming humans.

Oct 4, 2020

Scientists Create Clear, Glasslike Material Out of Wood

Posted by in categories: futurism, materials

It’s a lucrative concept that has drawn the attention of researchers across the globe in recent years.


But thanks to a new generation of futuristic building materials, those materials could be poised for a significant upgrade. A team of researchers at the USDA and several research institutions say they’ve developed “transparent wood,” a glass-like material made almost entirely out of trees that they claim is stronger, safer, more cost efficient and more thermally efficient than glass.

Kicking Glass

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Oct 2, 2020

SpaceX Boca Chica — Super Heavy Forward Dome Sleeved

Posted by in categories: materials, space travel

The first Super Heavy prototype has entered assembly operations, with the forward barrel sleeved and the fuel stack section spotted. The LR1600/2 crane (aka Tankzilla) continued to grow, and Orbital Launch Pad construction continued with more concrete being pumped into the legs. Starships SN5 and 6 remain outside after having been moved out of the High Bay yesterday, and work continued around the site.

Video and Pictures from Mary (@BocaChicaGal). Edited by Brady Kenniston (@TheFavoritist).

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Oct 1, 2020

Green technology: the man-made leaf that can produce oxygen

Posted by in categories: materials, space travel

Here at OVO we’re always keeping our eye out for the latest cutting-edge tech that might benefit the environment. That’s why we’re incredibly excited about the news that Julian Melchiorri, a design student at the Royal College of Art, has created the first man-made, biologically functional leaf. Christened ‘The Silk Leaf’, it’s the ultimate in ‘green’ technology in more ways than one.

The leaf contains chloroplasts taken from real plant cells, which are suspended in a silk protein material. When this comes into contact with carbon dioxide, water and light, it converts it into oxygen, just like a real plant.

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Oct 1, 2020

Lab turns trash into valuable graphene in a flash

Posted by in categories: energy, materials

World hunger is a persistent problem despite all of humanity’s progress in recent years. However, I believe that we have a real shot at defeating world hunge…


Scientists are using high-energy pulses of electricity to turn any source of carbon into turbostratic graphene in an instant. The process promises environmental benefits by turning waste into valuable graphene that can then strengthen concrete and other composite materials.

Oct 1, 2020

Transparent tanks? Army scientists discover new ways to make armor

Posted by in category: materials

The work has a wide range of applications for stronger materials.

Oct 1, 2020

Alchemy Arrives in a Burst of Light

Posted by in category: materials

Researchers have shown how to effectively transform one material into another using a finely shaped laser pulse.