{"id":12176,"date":"2025-12-03T09:00:09","date_gmt":"2025-12-03T08:00:09","guid":{"rendered":"https:\/\/talentimpulse.cea.fr\/offre-emploi\/developpement-du-4d-stem-a-inclinaisons-variables\/"},"modified":"2026-03-02T09:00:08","modified_gmt":"2026-03-02T08:00:08","slug":"developpement-du-4d-stem-a-inclinaisons-variables","status":"publish","type":"offre-emploi","link":"https:\/\/talentimpulse.cea.fr\/en\/offre-emploi\/developpement-du-4d-stem-a-inclinaisons-variables\/","title":{"rendered":"Development of 4D-STEM with variable tilts"},"content":{"rendered":"<p>The development of 4D-STEM (Scanning Transmission Electron Microscopy) has profoundly transformed transmission electron microscopy (TEM) by enabling the simultaneous recording of spatial (2D) and diffraction (2D) information at each probe position. These so-called \u201c4D\u201d datasets make it possible to extract a wide variety of virtual contrasts (bright-field imaging, annular dark-field imaging, ptychography, strain and orientation mapping) with nanometer-scale spatial resolution. In this context, 4D-STEM with variable beam tilts (4D-STEMiv) is an emerging approach that involves sequentially acquiring electron diffraction patterns for different incident beam tilts. Conceptually similar to precession electron diffraction (PED), this method offers greater flexibility and opens new possibilities: improved signal-to-noise ratio, faster two-dimensional imaging at higher spatial resolution, access to three-dimensional information (orientation, strain, phase), and optimized coupling with spectroscopic analyses (EELS, EDX). The development of 4D-STEMiv thus represents a major methodological challenge for the structural and chemical characterization of advanced materials, particularly in the fields of nanostructures, two-dimensional materials, and ferroelectric systems.<\/p>","protected":false},"featured_media":0,"template":"","categories":[184],"tags":[],"class_list":["post-12176","offre-emploi","type-offre-emploi","status-publish","hentry","category-nano-caracterisation-avancee"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/talentimpulse.cea.fr\/en\/wp-json\/wp\/v2\/offre-emploi\/12176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/talentimpulse.cea.fr\/en\/wp-json\/wp\/v2\/offre-emploi"}],"about":[{"href":"https:\/\/talentimpulse.cea.fr\/en\/wp-json\/wp\/v2\/types\/offre-emploi"}],"wp:attachment":[{"href":"https:\/\/talentimpulse.cea.fr\/en\/wp-json\/wp\/v2\/media?parent=12176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/talentimpulse.cea.fr\/en\/wp-json\/wp\/v2\/categories?post=12176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/talentimpulse.cea.fr\/en\/wp-json\/wp\/v2\/tags?post=12176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}