B1: Correlative Atom Probe Tomography and Electron Tomography of Functional Nanostructures
Correlative Atom Probe Tomography and Electron Tomography of Functional Nanostructures
This doctoral project aims to develop a robust workflow for correlating atom probe tomography (APT) and electron tomography (ET) to achieve spatially and chemically accurate 3D datasets of functional heterogeneous nanostructures. The candidate will combine APT’s atomic-scale chemical sensitivity with ET’s high spatial accuracy to correct APT distortions and enable precise mapping of complex interfaces. Using atomic layer deposition (ALD) for specimen encapsulation, the project will investigate catalytic layers, thin films, and nanostructured materials relevant to energy conversion. The researcher will identify identical features across APT and ET data to establish affine transformations, supported by machine learning and physics-driven neural networks for data fusion. The methodology will be validated using advanced facilities, including the combined TEM-APT system at FZ Jülich. This work will deliver a transferable framework for 3D correlation and distortion correction, advancing nanoscale analysis of catalysts, absorbers, and functional interfaces.
