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Interesting: 10 Uses for Graphene.
Welcome Kevmp and Samurai_Jack.
This is the graphene ping list.
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Interesting: 10 Uses for Graphene.
“A single crystal graphene synthesis is a result of a thorough kinetic study for the mechanisms of grain nucleation and growth. When working with copper foils, we have observed the graphene nucleation to be extremely sensitive to the surface roughness or impurities; we even observed the formation of the multilayer graphene (see Figure S4, Supporting Information). This is why we replaced the copper foil with a similar pure solidified[14, 15] copper pellet on top of a molybdenum foil (acting as a wetting layer by heating to 1135 °C and cooling to 1085 °C) and added a procedure of CO2 annealing during the melting phase for additional copper cleaning. It should be stressed that we observed no traces of carbon species on Cu after CO2 annealing with XPS and Raman spectroscopy. Thereby, the rate of graphene nucleation was reduced by recrystallization of copper by several orders of magnitude reaching 102–103 cm−2s−1 while no impurities leading to multilayer graphene were observed as well.”