Berlin 2012 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 47: Topical Session Modern Atom Probe Tomography III - Functional and Nanostructured Materials

MM 47.4: Vortrag

Donnerstag, 29. März 2012, 11:15–11:30, H 0107

On the pulse of time: Atom Probe Tomography of nano-structured materials — •Tala'at Al-Kassab, Catharina Wille, and Torben Boll — King Abdullah University of Science and Technology, Division of Physical Sciences,

In the last decade, Nano-materials have been gaining considerable interest for their various properties and applications. Particularly, designed nano-structured materials are largely characterized by their numerous internal interfaces. Since the quested physical properties of this material class are closely related to the thermal stability of their internal interfaces, the investigation of the chemical reactions at these interfaces is of a great importance to understand and optimize the desired properties for prospective future applications. Owing to their grain size of some tens of nanometers, such materials can only be analyzed via high resolution methods such as modern atom probe tomography. This contribution aims at showing by examples, what challenges such atom probe tomographers are able to solve when utilized to explore these nano-structured materials. Results obtained with the laser assisted wide angle tomographic atom probe LAWATAP and the local electrode atom probe LEAP HR4000, which are both newly installed in our laboratory at King Abdullah University KSA, will be presented and compared in this study.