HTTP:: How to Turn Graphene into a Biosensor
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Experts from the US Department of Energy's (DOE) Pacific Northwest National Laboratory (PNNL) have recently developed a new series of structures, constructed entirely out of the relatively new carbon compound graphene and strands of DNA, which is the building block of all living things. The team, which worked closely with scientists from the Princeton University, realized that there had been virtually no studies done on this type of combination, and decided to fill in the gaps. PNNL experts Zhiwen Tang and Yuehe Lin were the leaders of the new investigation, which resulted in nanostructures made entirely out of graphene and DNA. The interactions that appeared between the two components were tracked using a fluorescent protein. Preliminary studies seem to indicate that single-stranded DNA interacts with the carbon compound much stronger than its double-stranded sibling. The team inferred this by analyzing how much the fluorescence of the marker protein changed.In their exper!
iments, the investigators also discovered an amazing feat of graphene. While they were trying to figure out how they could use the difference in protein fluorescence to their advantage, they added complementary DNA to strands already on graphene. When they did this, the marker protein started glowing with renewed s...
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http://news.softpedia.com/news/How-to-Turn-Graphene-into-a-Biosensor-122467.shtml
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