Figure 5.

(a) Adhesion cluster modeled by a coupled spring model subject to force transmission via a soft transducer $k_c$ representing a typical AFM cantilever. Bond stiffness is $k_s$; cantilever deflection is $z_c$; and piezo movement is $z_p=vt$, in which v is the pulling speed. (b) Model potential employed to illustrate how to calculate the mean rupture force (blue lines). Distortion of the potential due to application of a force $f=k_{c}vt$ (Magenta lines). (c) Solving Eq. 16 gives the mean equilibrium force $\langle f\left(vt\right)\rangle /N_t$ as a function of piezo movement $z_p=vt$. To see this figure in color, go online.