Figure 4.

The normalized total system energy as a function of Ag/As for various D/ε. At a threshold value of D/ε = 650, the total system energy minimizes at two points, corresponding to the two distinct states of graphene morphology. Here λx = 9 nm, λy = 2 λx and Ay = λy/4

Li and Zhang Nanoscale Research Letters 2009 5:169-173   doi:10.1007/s11671-009-9460-1