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Graphene Gets Easier To See
Tech Business
Written by Gizmo   
Thursday, 14 January 2010 17:48
The one-atom-thick material which is the favourite substance to succeed silicon for making electronic components, can now be identified quickly and cheaply instead of by the lengthy and expensive methods of either atomic-force microscopy (AFM) or scanning electron microscopy (SEM). The Journal of the American Chemical Society (JACS) reports that Jiaxing Huang, Assistant Professor of Materials Science and Engineering at the North Western McCormick School of Engineering and Applied Science, has come up with a way to identify graphene by using dye - more particularly fluorescein dye.

"If one cannot examine these materials, quality control is going to be difficult," says Huang, "so we thought, how about we just put dye everywhere? That way, the whole background lights up, and wherever you have graphene will be dark. It's an inverse strategy that turns out to work beautifully."

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