Nanotechnology
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Researchers have used nanowires to ‘catch-and-release’ DNA in urine, enabling them to detect mutations that signify the presence of a brain tumor. Their method may one day mean that invasive tissue biopsies are no longer required.
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As anyone who's ever seen a bolt of lightning knows, the air around us can be filled with an astonishing amount of energy. A new study shows a way to harvest this power using a perforated nanofilm that can be made from a vast variety of materials.
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Inspired by the wings of dragonflies and cicadas, researchers have developed a new coating for orthopedic implants. It not only shreds harmful bacteria, but also monitors stress on the system, meaning it could warn of impending implant failure.
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Researchers tricked glioblastoma cancer cells in mice into taking up iron-filled carbon nanotubes. They then shredded those cells by spinning the tubes using magnetic force. The technique has the researchers hopeful for a similar result in humans.
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Traditional concrete is so last century. A team of engineers has created a concrete that is strong but flexible, can generate electricity and have its qualities fine-tuned for tailor-made builds. And one day it might even help guide driverless cars.
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The amount of single-use plastics the world disposed of during the pandemic continues to be a huge environmental headache. A clever new upcycling method, though, takes the trash and turns it into one increasingly lucrative piece of tech, carbon dots.
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Nanofibers have recently been utilized in many applications, ranging from wound dressings to high-strength composite materials. Scientists have now developed a faster and simpler method of producing those fibers, which was inspired by the silkworm.
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Researchers have developed a new open-source program that can convert drawings or digital models into nanoscale sculptures made of DNA. In tests, the system nailed rounded objects like vases and bowls.
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Last year, scientists at the Technical University of Denmark (DTU) got in a festive mood and created "the world's thinnest Christmas tree." This time, they've produced what they claim is the world's smallest record, complete with a Christmas tune engraved into it.
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Although we've been hearing about stronger forms of concrete, one of the keys to making concrete last longer is to keep water from seeping into it. A new surface sealant could help, as it makes existing concrete 75 percent more water-repellent.
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Because nanoscale objects are so incredibly small, they don't reflect enough light for even the best microscopes to discern details such as their color. A new lighting system, however, addresses that problem by acting as a tiny spotlight.
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No matter how hard we may try, we can't really tell if we've got bad breath – and asking someone else to sniff our breath for us can be awkward. It's now possible that before too long, however, a portable "thumb-size" device could let us know.
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