Investigating the internal properties of individual molecules by means of Kelvin Probe and Atomic Force Microscopy

Recent advances in the field of scanning probe microscopy allow high-resolution imaging of the internal structure of molecules adsorbed on surfaces. In this project, we will further develop this imaging technique, in particular the 3D mapping of atomically resolved charge density of molecules and their polarization using a combination of AFM and Kelvin probe measurements with functionalized tips. Moreover, we will study the process of tautomerization, i.e. transfer of hydrogen within a single DNA nucleobase deposited on a solid crystalline surface, by means of advanced AFM/STM techniques and theoretical calculations. We will perform theoretical simulations, which will bring a deeper understanding and correct interpretation of the experimental data.