HAADF-STEM atom counting in atom probe tomography specimens: Towards quantitative correlative microscopy

Ultramicroscopy
W LefebvreF Vurpillot

Abstract

The geometry of atom probe tomography tips strongly differs from standard scanning transmission electron microscopy foils. Whereas the later are rather flat and thin (<20 nm), tips display a curved surface and a significantly larger thickness. As far as a correlative approach aims at analysing the same specimen by both techniques, it is mandatory to explore the limits and advantages imposed by the particular geometry of atom probe tomography specimens. Based on simulations (electron probe propagation and image simulations), the possibility to apply quantitative high angle annular dark field scanning transmission electron microscopy to of atom probe tomography specimens has been tested. The influence of electron probe convergence and the benefice of deconvolution of electron probe point spread function electron have been established. Atom counting in atom probe tomography specimens is for the first time reported in this present work. It is demonstrated that, based on single projections of high angle annular dark field imaging, significant quantitative information can be used as additional input for refining the data obtained by correlative analysis of the specimen in APT, therefore opening new perspectives in the field of atomic...Continue Reading

References

Aug 30, 2006·Ultramicroscopy·K ThompsonB Gorman
Nov 8, 2008·Journal of Electron Microscopy·Andrew R Lupini, Stephen J Pennycook
Dec 9, 2008·Ultramicroscopy·S I MolinaS J Pennycook
Jul 12, 2011·Ultramicroscopy·Anudha Mittal, K Andre Mkhoyan
Apr 14, 2012·Nano Letters·Maya Bar-SadanLothar Houben
Apr 24, 2013·Ultramicroscopy·Francois VurpillotD J Larson

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Citations

Apr 12, 2016·Ultramicroscopy·Daniel BeinkeGuido Schmitz
Feb 7, 2017·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Ty J Prosa, David J Larson
Feb 24, 2017·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Thomas F Kelly
Feb 5, 2019·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Isabelle MoutonBaptiste Gault
Feb 22, 2017·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Andreas StoffersDierk Raabe

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