Driving experimental techniques to their limits is the key to success of our research. We have pioneered variable temperature scanning tunneling microscopy (STM) to probe diffusion, nucleation and growth on the atomic scale and were among the first to build low-temperature microscopes. Recent developments include:
• a microscope operating down to 10 mK with proven record resolution enabling Josephson tunneling at the atomic scale,
• monitoring charge carrier dynamics at atomic length scales and picosecond time-resolution by STM induced luminescence and
• a novel electrospray based deposition technique for nonvolatile compounds which opens up many new frontiers in nanoscale science and biomolecular imaging.