Is there no way to make the electron microscope more powerful?
Most images are two-dimensional projections of three dimenstional structures, which can miss fine details. Atom Probe Tomography (APT) is a state-of-the-art analytical method offering extensive capabilities for both three-dimensional imaging and chemical composition measurements at the atomic scale (around 0.1-0.3 nm resolution in depth and 0.3-0.5 nm laterally). Since its early developments, APT has contributed to major advances in materials science.
We have ready access to newly upgraded LEAP 5000 XS at Northwestern University Center for Atom-Probe Tomography (NUCAPT). The LEAP 5000 XS (CAMECA) combines new flight path technology with enhanced detector performance to offer improved field of view while achieving unprecedented detection efficiency ~80%. In addition, the advanced laser pulse module is capable of offering repetition rates of up to 2 MHz, remarkably improving the efficiency and productivity in data collection.
3D APT reconstruction (12.5 at% Al concentration isosurface) showing the morphology of γ′-Ni3Al phase embedded in γ-NiCr matrix.