Electron microscopy image of the tip of HS-AFM probe covered with nanodiamonds deposited by Chemical Vapor Deposition at CEA Saclay. These tips are intended to improve imaging reproducibility in membrane protein HS-AFM imaging. The sharp nanodiamonds allow imaging the membrane proteins at high resolution, whereas the globular tip radius (in this case R~50nm) provide good distribution of the applied force via electrostatic balancing in buffer solution.
Goal: To increase the imaging speed of the AFM to the core timescales of biomolecular activity: the microsecond.
Approach 1: To push the limits of the HS-AFM
Approach 2: novel AFM architectures HERMES ANR https://anr.fr/Projet-ANR-21-CE42-0031
Finding ways to bring together the capabilities of HS-AFM (label-free, sub-second high resolution imaging, and mechanical sensing and manipulation) with the capabilities of OM (recognition of molecular species, molecular interactions and biochemical-biophysical conditions)