Graphene transfer process and optimization of graphene coverage Syarifah Norfaezah Sabki, Shafiq Hafly Shamsuri, Siti Fazlina Fauzi, Meghashama Lim Chon-Ki and Noraini Othman EPJ Web Conf., 162 (2017) 01049 Published online: 22 November 2017 DOI: 10.1051/epjconf/201716201049