Contact Mode

Overview

Contact mode principle

Contact mode principle

A tip of nanometric size scans the surface using piezoelectric motors. Laser detection maintains a constant bending of the cantilever during the measurement. The movements of the vertical piezoelectric motor are recorded vertical to reconstruct the surface. Mapping of friction is performed with the torsion of the cantilever (LFM).

 

Interest

AFM contact 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.

 

 

 


 

Contact Modes

CAFM mode ResiScope mode Soft ResiScope mode PFM mode FMM mode

All AFM modes