Figure 8
From: Toward steering the motion of surface rolling molecular machines by straining graphene substrate

Distribution of the velocity of nanocar in different angles around the positive direction of \(x\)-axis. The stain gradient of all substrates is 5%, while the average of strain is (a) 2.5%, (b) 7.5%, (c) 12.5% and (d) 17.5%. The strain of substrate changes linearly along the \(x\)-axis.