Summary
A new method has been developed to gradually reconstruct the topography of surfaces. The technique involves measuring the changes in the dynamic vibration of a Nanofiber, which is moved parallel to the measured surface and gradually inserted deeper without physical contact. The Nanofiber vibrates and measures the wall of a deep groove, and the intermolecular forces between the vibrating fiber and the measured surface, such as Van der Waals (VdW) interaction forces, allow for measurable changes in the dynamics to be observed. This method can reconstruct the topography of inaccessible surfaces beyond current AFM capabilities. The estimate of topography distribution is refined based on a simplified, decoupled model, and it can be demonstrated that the simplified model converges to the fully coupled one, thus reconstructing the true topography. The paper also includes simulated examples of magnetic and VdW forces, along with a large-scale experiment with magnetic forces that simulate intermolecular forces.
