Quantitative Transmission Electron Microscopy

The group Quantitative Transmission Electron Microscopy (QuanTEM) is dedicated to understanding the atomic-scale structure, composition, and properties of sustainable materials through high-resolution imaging and advanced techniques such as 4DSTEM and in situ microscopy.

Transmission Electron Microscopy (TEM) enables the characterization of materials properties and behaviour down to the atomic scale, which makes it invaluable for the development of innovative and sustainable materials. Novel data driven-techniques such as 4D-STEM and multimodal imaging have elevated the capabilities of TEM even further in recent years. Utilizing these techniques in conjunction with in situ setups, and spectroscopy enables a quantitative approach towards materials characterisation from the micro to the atomic scale. This allows us to directly correlate structural defects such as grain boundaries and dislocations with local materials properties such as chemistry, strain and oxidation state. Using stimuli such as heating, straining or biasing we can further understand the evolution of such defects under operando conditions.

The group strives to develop methodological workflows to combine advanced techniques with computational evaluation routines and correlative image simulations. These generalized workflows are applied to a wide range of materials ranging from metals to oxides to nanostructures in order to extract quantitative materials properties.