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PhD position in advanced microscopy : In situ coupling of atom probe tomography and transmission electron microscopy

Entreprise/Labo : Groupe de Physique des Matériaux (GPM) / Saint Etienne du Rouvray (France)

Description :

Transmission electron microscopy (TEM) and atom probe tomography (APT) are ultimate characterization techniques enabling the inspection of materials at the atomic scale. These two  microscopy  techniques  are  currently  used  separately  to  provide  correlative  microscopy  analyses  of materials  [1].  Whereas  recent  instrumental  developments  of  TEMs  allow  combing  high-resolution imaging  with  mapping  of  physical  properties,  APT  remains  the  only  techniques  able  to  reconstruct volumes of materials with atomic sensitivity [2]. Nevertheless, APT suffers from artefacts which limit spatial resolution. A way to overcome its limitations would  be  to  image  APT  specimens  at  the nanometre scale during their analysis in APT but this is not yet possible. A very challenging task would hence be to combine APT and TEM in a single instrument, in order to image APT specimens but also to access a much deeper and complete characterization of nano-objects [3]. Researchers of the GPM are working on the combination of atom probe tomography and transmission electron microscopy in a new instrument. They have raised a 2 millions euros funding for this project, which includes a PhD position.  The GPM has a long experience in the conception of Atom Probe Tomography and of its coupling with other techniques. This new project is a new major challenge for the group.



Contact : Williams Lefebvre

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