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| Home | Headlines | Hydrogen Advances Graphene Use | ||||||||||||||||||||||||||||||||||||||||||||
HeadlinesHydrogen Advances Graphene Use- 1/12/2012Physicists have discovered that a dose of hydrogen or helium can render the "super material" graphene even more useful. The researchers' calculations show that the hydrogen at a given concentration becomes repulsive instead of attractive. The result is that graphene sheets repel each other and float freely just a few nanometres apart (an example of the so-called quantum levitation). Professor Bo E. Sernelius, who conducted the study in conjunction with his former doctoral student Mathias Boström, identifies several possible applications of the discovery: storage of hydrogen as vehicle fuel; creation of a single graphene sheet by peeling them from a pile that has grown on a substrate of silicon carbide; and manufacture of friction-free components on a Nano scale, for example, robots and sensors for medical purposes. In the study, the researchers began with two undoped sheets of graphene on a substrate of silicon dioxide. Once atomic hydrogen is added, repulsive forces arise. A similar effect was observed using other gases such as molecular hydrogen (H2) and helium. View more here. 
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