Figure 4.

Property of the potential switching model under application of external force. (A) Schematic of the torque F dependence of the potential switching model. When the mechanical potential is harmonic, the model becomes symmetrical about the change $\left(F,q,x\right)\to \left(2\Delta \mu /L-F,1-q,-x\right)$. (B) In the case of q = 0.5, the absolute velocity and the balance between the internal/external dissipations become equivalent in the two cases, F = f and $2\Delta \mu /L-f$. To see this figure in color, go online.