Hausdorff Forum June 8, 2018 - 14:15

Location: Lipschitz-Saal, Endenicher Allee 60

14:15 Direkt Raabe (Max-Planck-Institut für Eisenforschung): "From Seeing Atoms Toward Understanding Atoms: Methods, Results and Challenges of Advanced Atom Probe Tomography"

Atom probe tomography allows the imaging and chemical characterization of materials in three dimensions at the atomic scale. One single experiment can provide information on up to 1 billion atoms.
Current challenges lie particularly in obtaining not only the local chemical composition but also structure information at near atomic scale from such experiments of a site specific specimen region.
Different types of approaches are presented to tackle these challenges, placing particular attention on three techniques: These are (i) crystallographic atom probe tomography; (ii) correlative microscopy which works by conducting electron optical observations and atom probe tomography on exactly the same material portion; and (iii) advanced field ion microscopy.
While these techniques enable probing of materials with so far unprecedented precision, the ultimate goal of this endeavor lies in understanding, discovering and designing new materials bottom up from the atomic scale.
It is conceivable that mathematical and machine learning techniques may play a substantial future role in that context since advanced atom probe tomography and the associated correlative imaging techniques establish currently one of the very few areas in materials science where experimentally obtained big data sets are routinely made available.

15:15 - 15:45 Tea

15:45 Matthias Scheffler (Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin): t.b.a.