Epitaxial Graphene Nanoribbon Array Fabrication Using BCP-Assisted Nanolithography - Liu, Guanxiong; Wu, Yanqing; Lin, Yu-Ming; Farmer, Damon B.; Ott, John A.; Bruley, John; Grill, Alfred; Avouris, Phaedon; Pfeiffer, Dirk; Balandin, Alexander A.; Dimitrakopoulos, Christos (Acs Nano, 2012)