Visualization of Structure - Function Relationships by Electron Microscopy (EM) (B05)

• Subject Area: Theoretical Chemistry: Electronic Structure, Dynamics, Simulation
• Term: from 2017 to 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 281029004

Our scientific project explores novel techniques to utilize electron energy loss spectroscopy (EELS) for the correlated imaging of morphology and electronic properties of molecules and materials. On the basis of our new understanding of transmission EM EELS with momentum transfer at low electron energies, we develop EELS now also for the scanning electron microscope (SEM) at maximum momentum transfer (backscattering electrons) and ultra-low electron energies. Our SEM prototype also allows the spectroscopy of secondary electrons, which we use for the direct imaging of the surface potential. Exploiting this possibility, we will explore local charge mobility by direct imaging.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1249: N-Heteropolyzyklen als Funktionsmaterialien
• Applicant Institution: Ruprecht-Karls-Universität Heidelberg
• Project Head: Professor Dr. Rasmus R. Schröder