APT software
TAPSim is a simulation package which has been developed to achieve a better understanding of artefacts arising from samples with heterogenous evaporation properties. It allows the theoretical analysis of tips of arbitrary shape, of arbitrary atomic structure and of well-defined chemical composition. In this regard, practically no limitation exist as each sample atom may be represented by an irregular Wigner-Seitz cell
The produced output can be analysed with standard APT evaluation methods as they are applied to real experimental data, too. Thus TAPSim enables a one-to-one comparison of the theoretical model of a sample with the direct measurements. From a theoretical point of view, it offers the possibility of testing new concepts and procedures for APT data treatment in a reliable and controlled way. Hopefully, this approach will help to improve the quality of the 3D reconstruction procedures as well as to understand artifacts in present-day reconstructions of measured data.
References:
- C. Oberdorfer, S.M. Eich, and G. Schmitz. A full-scale simulation approach for atom probe tomography. Ultramicroscopy 128 (2013). DOI: 10.1016/j.ultramic.2013.01.005
- C. Oberdorfer, S.M. Eich, M. Lütkemeyer, and G. Schmitz. Applications of a versatile modelling approach to 3D atom probe simulations. Ultramicroscopy 159 (2015). DOI: 10.1016/j.ultramic.2015.02.008
- F. Vurpillot and C. Oberdorfer. Modelling Atom Probe Tomography: A Review. Ultramicroscopy 159 (2015). DOI: 10.1016/j.ultramic.2014.12.013