Deflection & friction signals
AFM contact mode allows rapid measurements on any sample type. The signals issue from the horizontal photo detectors contributes to the study of friction between the tip and the sample. The forces applied to the surface depend on the constant stiffness constant of the cantilever. These forces also vary as a function of the setpoint value which allows the study of friction as a function of the force applied. The force curves will help the study of local mechanical properties such as adhesion and stiffness.