Project supported by the National Basic Research Program of China (Grant Nos. 2011CB932700,2010CB923004,2010CB923004,and 2009CB929103);the National Natural Science Foundation of China (Grant Nos. 10834011 and 60976089);the Main Direction Program of Knowledge Innovation of the Chinese Academy of Sciences (Grant No. KJCX2-YW-W22)
We report on temperature-programmed growth of graphene islands on Ru (0001) at annealing temperatures of 700 ℃, 800 ℃, and 900 ℃. The sizes of the islands each show a nonlinear increase with the annealing tempera...