TY - GEN AU - Liu,Y AU - Weinert,M AU - Li,L TI - Determining charge state of graphene vacancy by noncontact atomic force microscopy and first-principles calculations SN - 1361-6528 PY - 2015///0330 N1 - Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S UR - https://doi.org/10.1088/0957-4484/26/3/035702 ER -