The carbon's solubility into copper is amazingly lower and for that reason largely floor diffusion and nucleation of carbon atoms are concerned. For this reason and also the growth kinetics, the graphene thickness is restricted to predominantly a monolayer. The massive edge would be that the graphene might be grown https://www.facebook.com/permalink.php?story_fbid=pfbid025zFgmpjaoQryR3ytytyMtikZ1zndFo3LMufu8fCzGfdeRn1tJBmDF2JeaaLNmktCl&id=61562415773754&__cft__[0]=AZWQkd6DNxgKFF3ezpBvpLlDKQ_yJIyPbdeg945OszaMul-BOlvs0xO4cjW2ltNAUpzvaafoi0jMn-THoRnzr5ewj08xOue8Vz7grkRu9-8GlEDu9TgvaTSP2D_0lF8t3Hx8RXQeqBqhpZBes5W2T3oPLUlVsruXWzeZuK3CZKILXAJ8J77ySQ64UrBjOhaDixt2x21lzKw5DmCpeHWg0GZI&__tn__=%2CO%2CP-R