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Coatings

Aircraft

Carbon nanotube-based anti-icing coating proves itself in wind tunnel testing

There are numerous types of systems designed to prevent ice forming on aircraft surfaces during flight. Some reroute hot air produced by jet engines, others generate their own heat, others knock ice off through mechanical force, while others still release antifreeze chemicals onto the wing. Battelle has recently tested its carbon nanotube-base HeatCoat technology that it claims is lighter and less power hungry than such systems. It also has no moving parts and could easily be retrofitted to existing aircraft.Read More

Science

More human-friendly antibacterial coating made from gold

We've been hearing a lot about the antibacterial qualities of silver, with silver nanoparticles finding use in everything from water filters to food packaging. Unfortunately, there are also concerns about the toxicity of those particles, particularly when they enter our bodies. Now, however, Polish scientists have developed what they claim is a safer alternative – an antibacterial coating that kills microbes using gold. Read More

Electronics

Coating makes swallowing batteries safer for curious kids

It can be a herculean task to get kids to eat their vegetables, but they'll happily chow down on things they aren't supposed to. If one of those things is a button battery, serious injuries can result in the form of burns to the esophagus or tears in the digestive tract. Researchers may not have found a way to stop kids swallowing button batteries, but they have found a way to make such culinary no-nos safer.Read More

Medical

Surface coating for medical devices prevents blood clotting and bacterial infections

Our bodies have evolved to be pretty good at dealing with incursions by foreign objects and bacteria. Usually, that's a positive thing, but it can spell trouble for medical devices, such as replacement joints, cardiac implants and dialysis machines, which increase the risk of blood clots and bacterial infection. Now researchers at Harvard University have developed a surface coating that smooths the way for medical devices to do their job inside the human body. Read More

Environment

Nanoparticle coating cleans cashmere with light

Cashmere is a fine quality wool whose delicate nature generally means a trip to the dry cleaner is required to deal with any stains on an article of clothing made from the material. But now researchers at City University of Hong Kong (CityU) has developed a self-cleaning coating made up of nanoparticles that removes stains from cashmere by exposing the garment to light. Read More

Science

Copper nanowire coating could lead to shatterproof smartphone screens

Chances are that the touchscreen on your smartphone or tablet incorporates a coating of indium tin oxide, also known as ITO or tin-doped indium oxide. Although it's electrically conductive and optically transparent, it's also brittle and thus easily-shattered. Scientists at Ohio's University of Akron, however, are developing something that could ultimately replace the material. They've created an electrode coating that's not only as transparent and more conductive than ITO, but is also far tougher. Read More

Aircraft

Nanoparticle coating could let aircraft engines last three times longer

The higher the temperature at which an aircraft engine is able to run, the more efficiently it uses fuel. In order to run at those high temperatures, the metal components of airplane engines are presently treated with heat-shielding coatings. Scientists at Sweden's University West, however, are developing a new such coating that is said to be far more effective than anything presently used – it could extend the service life of engines by 300 percent. Read More

Environment

Starpath spray-on coating lights up the road

UK company Pro-Teq has developed a new water-resistant, spray-on coating that absorbs UV light during the day and releases it at night, adapting to the lighting conditions in its surroundings. The technology is being given a test run at the Christ's Pieces park in Cambridge, and could prove a cost effective alternative to conventional street lighting.Read More

Health & Wellbeing

Promising antibacterial coating created from green tea and salt

Researchers at Northwestern University have discovered new ways of utilizing the properties of naturally occurring polyphenols found in green tea, red wine and dark chocolate. Dissolving polyphenol powders in water with a small amount of salt instantly produces transparent coatings that kill bacteria on contact, have antioxidant qualities and are non-toxic. The sticky nature of polyphenols and the low cost of materials could open the door to a wide range of uses for these coatings. Read More

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