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Nanoparticles

Science

Oscillating electric field used to remove nanoparticles from blood

Nanoparticles as a vehicle for delivering drugs precisely where they are needed promise to be a major revolution in medical science. Unfortunately, retrieving those particles from the body for detailed study is a long and involved process. But that may soon change with a team of engineers at the University of California, San Diego developing a technique that uses an oscillating electric field to separate nanoparticles from blood plasma in a way that may one day make it a routine procedure.
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Environment

Sunlight-activated nanoparticles could clean up oil sands pollution on the cheap

Last year around 2.3 million barrels of oil were pulled each day from tar sands in Alberta, Canada, the third largest oil reserve in the world. This mining process is hugely water-intensive, and though much of it is recycled, it still results in massive pools of polluted wastewater which are difficult to treat and pose a threat to the environment. Canadian researchers have developed a new approach to removing the contaminants using sunlight and nanoparticles, an approach they say will prove much more effective and cheaper than existing methods.Read More

Environment

Conductive ink significiantly improves the efficiency of solar water heating

Researchers at the Technological Institute of the Lagoon (ITL), Mexico, have created a nanoparticle-rich, superconducting ink that they have used to coat pipes of solar water heaters to increase their efficiency by up to 70 percent. The new coating was recently proven on the solar heating of a Mexican city sports complex swimming pool, where 2 million cubic meters (70.6 million cubic feet) of water were heated from 26 °C to 37 °C (79 °F to 98°F).Read More

Environment

Nanotech could rid cattle of ticks, with less collateral damage

If you've ever used tick medicine on your dog, then you're probably aware of how toxic the stuff is. Well, it's used on cows too, and it can end up in their meat, milk, or the surrounding environment. Fortunately, however, scientists at the National University of Mexico have developed a new type of tick treatment for cattle that is reportedly much less toxic than what's currently used.Read More

Good Thinking

The Drinkable Book has water-purifying pages

For people in developing nations or rural locations, getting clean water may soon be as simple as opening a book … and ripping a page out. That’s the idea behind The Drinkable Book, developed by Carnegie Mellon University postdoc Theresa Dankovich. Each of its pages is made from a thick sheet of paper impregnated with silver and copper nanoparticles, that kill 99.9 percent of microbes in tainted water that’s filtered through it.Read More

Medical

New material helps diabetic wounds heal faster

Because they often have weakened immune systems and/or blood flow restrictions, diabetics run a heightened risk of serious infection from even the smallest of open wounds. That's why a team of scientists from Egypt's Alexandria University have developed a means of getting those wounds to heal faster – silver-impregnated dressings.Read More

Medical

New blood clot-busting nanocapsule promises immediate care for heart attacks

When blood clots form in the aftermath of a heart attack or stroke, medications can be deployed to break them apart, but delivery is tricky. Getting the medicine to the clot takes some guesswork and there's no guarantee it will arrive in the right dosage, with complications like hemorrhaging a real possibility. A team of Australian scientists has developed a new approach that sees the drugs carried safely inside a nanocapsule, opening up the treatment to more patients and lessening the chance of side effects.Read More

Materials

Silver-laced bottles prolong shelf life of milk

Consumers may soon be able to go for longer between milk-buying trips. That's because Brazilian company Agrindus hopes to start marketing plastic milk bottles that use embedded silver nanoparticles to kill bacteria. Grade A pasteurized fresh whole milk packaged in those bottles can reportedly last for up to 15 days, as opposed to the usual seven.Read More

Medical

Nanorobots wade through blood to deliver drugs

Nanorobots hold great potential in the field of medicine. This is largely due to the possibility of highly-targeted delivery of medical payloads, an outcome that could lessen side effects and negate the need for invasive procedures. But how these microscopic particles can best navigate the body's fluids is a huge area of focus for scientists. Researchers are now reporting a new technique whereby nanorobots are made to swim swiftly through the fluids like blood to reach their destination. Read More

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