Photothermal off-resonance tapping got introduced recently as a fast and gentle atomic force microscopy (AFM) imaging mode for soft samples (e.g proteins) [https://doi.org/10.1038/s41565-018-0149-4]. Now this imaging mode is extended for the acquisition of correlated topography and nanomechanical sample properties. Experiments revealed effects of the excitation laser spot position and excitation frequency on the obtained sample stiffness. The main goal of this project will be to create, implement and analyse thermo-mechanical models using finite-element or analytical methods to understand and compensate these effects.
3 – 6 months
18.10.2024
For further information, please contact Cornelia Pichler or Hans Gunstheimer, phone +49 721 608-23128.