We are hiring: PhD students and postdocs welcome


Four new PhD positions available (one on applied electron microscopy) in a collaborative DFG Research Projekt with the groups of Prof. Alexander Urban and Prof. Bert Nickel at LMU Physics!   > Download position announcement here <


Thanks to recent successful funding applications within the frameworks of the European Research Council (ERC) and the DFG, our group offers several positions for PhD projects. The start date is flexible, our intent is to fill the positions as soon as possible. The scientific field is 4D STEM with focus on the research lines mentioned below briefly. Candidates with experimental and theoretical background within the natural sciences are equally welcome - and needed! All projects act within a broad consortium of interdisciplinary partners, ranging from activities within our DFG-excellence cluster (e-conversion, TUM & LMU) to large-scale European projects (4D-BioSTEM Synergy project) to multiple bilateral international cooperations. This offers a solid and wide network for scientific, social and cultural interaction, exchange, training and development.
For questions and applications, contact Prof. Dr. Knut Müller-Caspary (k.mueller-caspary@cup.lmu.de)

4D-STEM data can be evaluated in a plenitude of ways, electron ptychography methods being one of the most promising families currently. This includes direct reconstruction schemes as well as iterative algorithms. They have in common that the goal is to retrieve the complex object transmission function of the specimen, whose phase is proportional to the projected potential created by the atoms. In that respect, different ptychographic methods are suitable for different challenges in nanoscience. In several PhD projects framed below, application of existing ptychography schemes, their optimisation for the investigation of nanostructures in the Physical and Life Sciences, further developments of phase retrieval methodologies and their implementation are the most important research foci.

Background: 4D-STEM

The innovative character of the technique "4D-Scanning TEM" (4D-STEM) arises from the simultaneous availability of data in real and diffraction space. The technique has been put into practice by the introduction of ultrafast cameras to TEM delivering many thousands of images per second, partly pioneered by our group. The data itself is interesting in many respects being at the heart of fundamental physics, nanoscience, organic chemistry and structural biology. It especially enables

Last update: December 2023