31 Aug '13, 11pm

#Graphene Said to Pose Health Hazard

#Graphene Said to Pose Health Hazard

PORTLAND, Ore. — A team of researchers at Brown University has concluded that graphene -- the darling material of semiconductor futurists -- disrupts functions of living cells. If the results of the Brown toxicity study are confirmed by others, graphene could end up in the same hazardous-material category as its cylindrical relatives, carbon nanotubes. "Graphene is easier to produce than carbon nanotubes and can replace them in many applications," Agnes Kane, a professor at Brown, told me: Graphene has many unique features, but most important is that it is often manufactured from graphite -- a naturally occurring mineral -- by chemical or mechanical exfoliation, which separates the carbon layers, resulting in dry powders with the potential for inhalation exposure. As a pathologist, we have studied nanotubes and other related carbon materials, but this is the first two-dime...

Full article: http://www.eetimes.com/document.asp?doc_id=1318965

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