We verified the stability and reproducibility of the microscopic
movement of the motor by making several approach-retreat cycles from
the surface of $\sim$70 steps which resulted in the data displayed in
-\cref{fig.stepper:backlash}. We also measured the distance the
+\cref{fig:stepper:backlash}. We also measured the distance the
surface moved with every step by determining the change in deflection
voltage as a function of peizo position as we stepped the AFM tip
closer the the surface. Our stepsize data is displayed in