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Thanks to these Creeps, No One Can Sink Your Battleship EVER Again
Spiders and ants inspire metal that won’t sink – Phys.org
Excerpt:
University of Rochester researchers, inspired by diving bell spiders and rafts of fire ants, have created a metallic structure that is so water repellent, it refuses to sink—no matter how often it is forced into water or how much it is damaged or punctured.
Could this lead to an unsinkable ship? A wearable flotation device that will still float after being punctured? Electronic monitoring devices that can survive in long term in the ocean?
All of the above, says Chunlei Guo, professor of optics and physics, whose lab describes the structure in ACS Applied Materials and Interfaces.
The structure uses a groundbreaking technique the lab developed for using femtosecond bursts of lasers to “etch” the surfaces of metals with intricate micro- and nanoscale patterns that trap air and make the surfaces superhydrophobic, or water repellent.
The researchers found, however, that after being immersed in water for long periods of time, the surfaces may start to lose their hydrophobic properties.
A Horde of Bots to Restore Loss After Stroke
A Horde of Bots to Restore Loss After Stroke
Tiny transporters could deliver treatment to stroke patients – Phys.org
Excerpt:
The brain is the only organ to have its own security system: a tightly packed network of blood vessels and barriers that allow the entry of essential nutrients while blocking other potentially harmful substances.
However, the barrier also blocks lifesaving drugs, rendering it difficult to treat a range of conditions including stroke.
Now the research carried out on mice and published today in the journal ACS Nano, shows that liposomes can potentially transport life-saving drugs across the barrier.
The researchers were able to generate microscopic pictures of the brain tissue using state of the art imaging techniques, showing the nanomaterial is a viable transporter.
Up to now, scientists haven’t yet devised a reliable way to deliver drugs to damaged brain efficiently—one of the last frontiers in medical science.
But now the team show that following a stroke event, liposomes are able to penetrate the brain by being transported across the tightly packed endothelial cells by using pouch-like structures known as caveolae.
Super Plastic Gives Super IR Vision
Super Plastic Gives Super IR Vision
New plastic could bring infrared security to your home – Futurity
Excerpt:
A new kind of plastic is incredibly useful for lenses, windows, and other devices requiring transmission of infrared light, which makes heat visible.
In the five years since researchers created the material, a sulfur-based polymer they forged from waste generated by refining fossil fuels, the team has improved the material and created the next generation of lenses.
“IR imaging technology is already used extensively for military applications such as night vision and heat-seeking missiles,” says Jeffrey Pyun, a professor in the chemistry and biochemistry department at the University of Arizona who leads the lab that developed the polymer. “But for consumers and the transportation sector, cost limits high-volume production of this technology.”
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