%0 Journal Article %1 ISI:000375946200005 %A Beinke, Daniel %A Oberdorfer, Christian %A Schmitz, Guido %C PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS %D 2016 %I ELSEVIER SCIENCE BV %J ULTRAMICROSCOPY %K Delaunay Ion Volume probe reconstruction; tessellation} tomography; trajectories; {Atom %P 34-41 %R 10.1016/j.ultramic.2016.03.008 %T Towards an accurate volume reconstruction in atom probe tomography %V 165 %X An alternative concept for the reconstruction of atom probe data is outlined. It is based on the calculation of realistic trajectories of the evaporated ions in a recursive refinement process. To this end, the electrostatic problem is solved on a Delaunay tessellation. To enable the trajectory calculation, the order of reconstruction is inverted with respect to previous reconstruction schemes: the last atom detected is reconstructed first. In this way, the emitter shape, which controls the trajectory, can be defined throughout the duration of the reconstruction. A proof of concept is presented for 3D model tips, containing spherical precipitates or embedded layers of strongly contrasting evaporation thresholds. While the traditional method following Bas et al. generates serious distortions in these cases, a reconstruction with the proposed electrostatically informed approach improves the geometry of layers and particles significantly. (C) 2016 Elsevier B.V. All rights reserved.

@article{ISI:000375946200005, abstract = {{An alternative concept for the reconstruction of atom probe data is outlined. It is based on the calculation of realistic trajectories of the evaporated ions in a recursive refinement process. To this end, the electrostatic problem is solved on a Delaunay tessellation. To enable the trajectory calculation, the order of reconstruction is inverted with respect to previous reconstruction schemes: the last atom detected is reconstructed first. In this way, the emitter shape, which controls the trajectory, can be defined throughout the duration of the reconstruction. A proof of concept is presented for 3D model tips, containing spherical precipitates or embedded layers of strongly contrasting evaporation thresholds. While the traditional method following Bas et al. generates serious distortions in these cases, a reconstruction with the proposed electrostatically informed approach improves the geometry of layers and particles significantly. (C) 2016 Elsevier B.V. All rights reserved.}}, added-at = {2017-05-18T11:32:12.000+0200}, address = {{PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}}, affiliation = {{Beinke, D (Reprint Author), Univ Stuttgart, Inst Mat Sci, Heisenbergstr 3, D-70569 Stuttgart, Germany. Beinke, Daniel; Oberdorfer, Christian; Schmitz, Guido, Univ Stuttgart, Inst Mat Sci, Heisenbergstr 3, D-70569 Stuttgart, Germany.}}, author = {Beinke, Daniel and Oberdorfer, Christian and Schmitz, Guido}, author-email = {{daniel.beinke@imw.uni-stuttgart.de}}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2cc1fef12bcfe2a1fe3838b49915a4c3e/hermann}, doi = {{10.1016/j.ultramic.2016.03.008}}, eissn = {{1879-2723}}, funding-acknowledgement = {{German Science Foundation {[}DFG Schm1182/16-1]; Ministry of Science, Research and the Arts Baden-Wurttemberg; universities of the State of Baden-Wurttemberg, Germany}}, funding-text = {{Financial support by the German Science Foundation (DFG Schm1182/16-1) is gratefully acknowledged. This work was performed on the computational resource bwUniCluster funded by the Ministry of Science, Research and the Arts Baden-Wurttemberg and the universities of the State of Baden-Wurttemberg, Germany, within the framework program bwHPC.}}, interhash = {e9f0ebc681e2a54a999218d0083a9627}, intrahash = {cc1fef12bcfe2a1fe3838b49915a4c3e}, issn = {{0304-3991}}, journal = {{ULTRAMICROSCOPY}}, keywords = {Delaunay Ion Volume probe reconstruction; tessellation} tomography; trajectories; {Atom}, keywords-plus = {{FIELD EVAPORATION BEHAVIOR; LOCAL MAGNIFICATION; ABERRATIONS; MICROSCOPY; SIMULATION; OVERLAPS}}, language = {{English}}, month = {{JUN}}, number-of-cited-references = {{25}}, pages = {{34-41}}, publisher = {{ELSEVIER SCIENCE BV}}, research-areas = {{Microscopy}}, times-cited = {{0}}, timestamp = {2017-05-18T09:32:12.000+0200}, title = {{Towards an accurate volume reconstruction in atom probe tomography}}, type = {{Article}}, volume = {{165}}, web-of-science-categories = {{Microscopy}}, year = {{2016}} }