The nanoTWIST probe is a T-shaped cantilever having a tip on one of its arms. The positioning of the tip on one of the arms of the probe enhances its torsional motion when the tip interacts with the sample in the contact or oscillatory modes.

Typical tip height
5 um

Full tip cone angle less than
40deg;

Tip radius
10 nm

Cantilevers with torsional sensitivity provide force spectroscopy imaging in tapping mode for mapping of local adhesion and elastic modulus. The probe has a tip that is offset from the long axis of the cantilever. The materials properties can be calculated from the torsional harmonic signal.