Dynamic Approach Curves is the premier tool of a suite of tools being developed under the title of VEDA - Virtual Environment for Dynamic AFM. This tool accurately simulates the oscillations and tip-sample interaction forces of an AFM cantilever probe excited near resonance and brought close to a sample in either ambient conditions or ultra high vacuum. This tool features (a) accurate models of AFM probe dynamics, (b) realistic tip-sample interaction force models and (c) accurate, FORTRAN based, numerical integration schemes that are well-suited for non-smooth, nonlinear differential equations. From the tip oscillation time histories, which are simulated with a relative tolerance of 1e-9, quantities such as amplitude and phase of the first harmonic, peak interaction force, mean interaction force, and power dissipation are calculated. For detailed information about this tool, please consult the User's Guide.

This work was funded by the Network for Computational Nanotechnology (NCN).

• Frontiers In Scanning Probe Microscopy Workshop

If you reference this work in a publication, please cite as follows:

• Melcher, John; Hu, Shuiqing; Raman, Arvind (2007), "Virtual Environment for Dynamic AFM," doi: 10254/nanohub-r2368.2.

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In addition, we would appreciate it if you would add the following acknowledgment to your publication:

• Simulation services for results presented here were provided by the Network for Computational Nanotechnology (NCN) at nanoHUB.org

1. atomic force microscopy
2. instruments
3. nano electro-mechanical systems