The geometrical mutual AFM simulator: GeoAFM

In this page, we introduce to you the GeoAFM, the geometrical mutual AFM simulator.
We link items representing various simulation modes of the GeoAFM to other web pages below.
Following these links and jumping into the other web pages, you can find examples of calculations for the simulation modes of the GeoAFM.
In each example of the calculation, you can obtain a movie file and documents that explain how to use the software.
Using these contents in an effective manner, you can learn how to use the GeoAFM.

The GeoAFM works as a kind of a rapid three-way data processor, so that it reconstructs the one out of the other two among three geometrical elements, a tip, a sample material and its AFM image, in less than one minute.
The GeoAFM provides simulation results using only geometrical information and relative positional relationship between the tip and the sample.
The GeoAFM assumes the following geometrical condition.
When the tip detects the force from the sample, the tip is in contact with the surface of the sample.
Thus, the GeoAFM simulates the non-contact AFM experiment.
Hence, we do not consider the van der Waals force between the tip and the sample and deformation of the tip and the sample in simulations of the GeoAFM.
The GeoAFM does not perform simulations according to the classical mechanics or the quantum mechanics.
These theories do not affect results of simulations by the GeoAFM.
However, because the GeoAFM neglects complicated effects caused by dynamics in physics, it carries out calculations of a simulation very rapidly, in less than one minute.
Thus, you can carry out simulations by the GeoAFM and perform the SPM experiments at the same time.
Because the GeoAFM neglects microscopic effects in physics, it is suitable for examining macroscopic properties of materials.
The GeoAFM is suitable for performing macroscopic simulations for high polymers, DNA, biomaterials, and semiconductors at the micron scale.

Choosing a simulation mode: the GeoAFM prepares the following three simulation modes.
Please choose a simulation mode that enables you to perform your task from the following list:

[A simulation mode for obtaining the AFM image from the data of the shape of the tip and the surface of the sample]
[A simulation mode for obtaining the sample surface from the data of the shape of the tip and the observed AFM image]
[A simulation mode for obtaining the shape of the tip from the sample surface data and the observed AFM image]

Documents

• We describe examples of how to use the GeoAFM in the tutorial.
• We describe details of how to set parameters for numerical calculations with GeoAFM in the reference manual.
• We explain details of technical issues about the GeoAFM in the guidebook.

If you cannot find a simulation mode that you want to perform from the above list, please contact us by e-mail.
When you send an e-mail to us, a string of characters is put into a subject of the e-mail automatically.
This string tells us at which stage of the simulation you have a trouble.

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