Towards model-driven reconstruction in atom probe tomography

Reconstructions of heterogeneous material systems in Atom Probe Tomography (APT) suffer from imaging distortions due to the underlying assumptions made about specimen geometry by current reconstruction methods [1]. These distortions can seriously limit the reliability of measurements derived from reconstructions, particularly in the vicinity of microstructural interfaces [2]. While previous attempts have been made to provide a solution for correcting such distortions, these efforts have fallen short of delivering a physically motivated and general algorithm that can be deployed on experimental data.