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Printable supercapacitors

By / May 11, 2009

A UCLA team has reported in Nano Letters that it has “printed” a supercapacitor for the first time. The group, led by George Grüner, accomplished their feat by spraying carbon nanotubes onto paired sheets of film separated by a gel electrolyte. Each sheet acts a charge collector. News about Grüner’s work started appearing in 2007,…

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Graphene memory possible?

By / August 26, 2008

Writers at the IEEE Spectrum report that molecule-size memory may be possible using graphene. Electrons flow extremely fast in graphene, much faster than in silicon, and a graphene transistor could really zip. That’s been the good news. The bad news, until now however, is that it’s hard to stop current from flowing in graphene once…

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