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Category: materials – Page 256

Terahertz zaps alter gene activity in stem cells

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.

Researchers create fly-catching robots

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.

Scientists Create Clear, Glasslike Material Out of Wood

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

It’s a lucrative concept that has drawn the attention of multiple research teams across the globe, all working on similar concepts.

SpaceX Boca Chica — Super Heavy Forward Dome Sleeved

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).

Click “Join” for access to early fast turnaround clips, exclusive discord access with the NSF team, etc — to support the channel.

Updates: https://forum.nasaspaceflight.com/index.php?topic=51332.

Articles: https://www.nasaspaceflight.com/?s=Starship

NSF Store: https://www.nasaspaceflight.com/shop/

Continue reading “SpaceX Boca Chica — Super Heavy Forward Dome Sleeved” | >

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

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.

The advantages are obvious. Melchiorri quite rightly suggests that his invention could have huge implications for space travel, providing a renewable supply of oxygen to astronauts and allowing them to undertake longer journeys than previously possible.

Lab turns trash into valuable graphene in a flash

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.

Scientists Create Enzyme That Devours Plastic at Incredible Speed

All Hands

The new enzyme can make its way through plastic six times faster than the previous plastic-devouring enzyme developed by members of the same team, according to research published Monday in the journal PNAS.

“We were actually quite surprised it worked so well,” McGeehan told CNN, though he added that the enzyme is “still way too slow” to be helpful at any meaningful scale.

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