Time-varying tip-sample force measurements confirm steady-state dynamics in tapping-mode atomic force microscopy
arXiv:0712.2833 · doi:10.1103/PhysRevB.77.115405
Abstract
Direct time-varying tip-sample force measurements by torsional harmonic cantilevers facilitate detailed investigations of the cantilever dynamics in tapping-mode atomic force microscopy. Here we report experimental evidence that the mathematical relationships describing the steady state dynamics are quantitatively satisfied by the independent measurements of tip-sample forces over a broad range of experimental conditions. These results confirm the existing understanding of the tapping-mode atomic force microscopy and build confidence on the reliability of time-varying tip-sample force measurements by the torsional harmonic cantilevers.
16 pages including 3 figures