The carbon's solubility into copper is amazingly reduced and thus largely floor diffusion and nucleation of carbon atoms are associated. Because of this and the growth kinetics, the graphene thickness is limited to predominantly a monolayer. The large gain would be that the graphene can be developed on Cu foil https://www.facebook.com/permalink.php?story_fbid=pfbid0VCARyNTxLQN8hADkVfrhkW4wGZovySkKkrVrvNWaDKt4A6wDueGSLFr7dSah3zWDl&id=61560512640678&__cft__[0]=AZWk3NSjriI2DDQIZSnJw8fTQXTCqq9FTMSe7hBqPoWXLy0scYS1gc8GcBOKOcHp8_VG_gsW0vQ0qZIaXv4i0adkCWPPpO93QajcVNONbLwjxQMx4UPeTkfBOjhwTaSzKkJE0FYSygazT4LAjNjYgpmNfYIKFmqAn3GVDElKfNf1ny4p0C-Fr23KETAyF7gp9c0BYVWvMamUGRlgpWuxtfxa&__tn__=%2CO%2CP-R