Direct epitaxial CVD synthesis of tungsten disulfide on epitaxial and CVD graphene Bianco, G. V. ; Losurdo, M. ; Giangregorio, M. M. ; Sacchetti, A. ; Prete, P. ; Lovergine, N. ; Capezzuto, P. ; Bruno, G. Abstract Publication: RSC Advances Pub Date: 2015 DOI: 10.1039/C5RA19698A Bibcode: 2015RSCAd...598700B