Nanoparticles
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Mar 18 | News
In findings that took the experimenters three years to believe, Univ. of Michigan engineers and their collaborators have demonstrated that light itself can twist ribbons of nanoparticles.
Mar 16 | News
The film "Avatar" isn't the only 3-D blockbuster making a splash this winter. A team of scientists from Houston's Texas Medical Center this week unveiled a new technique for growing 3-D cell cultures, a technological leap from the flat petri dish that could save millions of dollars in drug-testing costs.
Mar 15 | RDBlog
The recent review of the past 10 years of the National Nanotechnology Initiative--as presented by the President's Council of Advisors on Science and Technology--suggested the rise of nanomanufacturing as the near future of nanotechnology. But the actual proposed funding reflects a cautious approach, even about nanotech in general.
Mar 2 | News
A nanoparticle growing in popularity as a bactericidal agent has been shown to be toxic to fish, according to a Purdue Univ. study. Tested on fathead minnows—an organism often used to test the effects of toxicity on aquatic life—nanosilver suspended in solution proved toxic and even lethal to the minnows.
Mar 2 | News
The same antifreeze proteins that keep organisms from freezing in cold environments also can prevent ice from melting at warmer temperatures, according to a new Ohio Univ. and Queen's Univ. study.
Feb 24 | News
Chemists in Finland have made new polymer-stabilized silver nanoparticles that they say significantly reduce the exposure to silver encountered by those who use silver’s ability to neutralize microbial contaminants, for example in colloidal silver water filters. Though silver’s health benefits are well known, the long-term exposure effects of small amounts of the toxin are not entirely understood.
Feb 18 | News
A tiny scaffold-like titanium structure of Nanonets coated with silicon particles could pave the way for faster, lighter and longer-lasting Lithium-ion batteries, according to a team of Boston College chemists who developed the new anode material using nanotechnology.
Feb 17 | News
Taking gold nanoparticles to the cancer cell and hitting them with a laser has been shown to be a promising tool in fighting cancer, but what about cancers that occur in places where a laser light can’t reach? Scientists at the Georgia Institute of Technology have shown that by directing gold nanoparticles into the nuclei of cancer cells, they can not only prevent them from multiplying, but can kill them where they lurk.
Feb 17 | News
A new nanotech catalyst developed by McGill Univ. chemists offers industry an opportunity to reduce the use of expensive and toxic heavy metals. Although chemists have long been aware of the ecological and economic impact of traditional chemical catalysts and do attempt to reuse their materials, it is generally difficult to separate the catalyzing chemicals from the finished product. The team's discovery does away with this chemical process altogether.
Feb 16 | News
Material scientists at the Univ. of Pennsylvania have demonstrated the transduction of optical radiation to electrical current in a molecular circuit. The system, an array of nano-sized molecules of gold, respond to electromagnetic waves by creating surface plasmons that induce and project electrical current across molecules, similar to that of photovoltaic solar cells.