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" ... Graphene can be manufactured in layers using surface-assisted thin film synthesis methods that result from the reaction of two pre-cursor chemicals however this can currently only be achieved on metal substrates. In electronics, the materials that require the use of graphene nanoribbons are semiconductor materials such as geranium. In order for the graphene nanoribbons to replace the silicon that is currently used, it must be very smooth, with specific width, and smooth edges. This seemed impossible to achieve until recently. ... "