Phys.org reported earlier this week that Northwestern University, along with the Center for Nanoscale Materials EMMD Group at Argonne, has for the first time demonstrated the growth of graphene on a silver substrate. Also for the first time, the two entities observed a “[u]nique wave-like electron scattering at the edges of the dendritic graphene.”
As quoted in the market news:
Graphene, a one-atom-thick carbon layer with extraordinary conductivity and strength, holds promise for a range of applications. However, current methods for growing graphene on metals have been unsuccessful with silver. While graphene is conventionally grown on a metal surface by catalytically decomposing hydrocarbons at elevated temperatures, this method is ineffective for silver substrates because the substrates are chemically inert and have a relatively low melting point. Using a graphite carbon source, the team was able to grow graphene by depositing atomic carbon, rather than a carbon-based molecular precursor, onto the substrate. The growth circumvented the need for a chemically active surface and allowed the graphene growth at lower temperatures.