Ralph Krupke

Prof. Dr. Ralph Krupke is a leading researcher at the Institute of Nanotechnology (KIT) and Technische Universität Darmstadt, where he chairs the Molecular Nanostructures group. His work focuses on charge transport and light-matter interaction in carbon nanosystems, including graphene, carbon nanotubes, and 2D materials for optoelectronics, photonics, and sensing.

• Key Research Areas:
  • Quantum photonic devices
  • Graphene and carbon nanotube integration
  • Photonic crystal cavities
  • Nanoparticle etching and subsurface catalysis
  • Raman and photocurrent spectroscopy
• Major Projects:
  • Waveguide-integrated nanotube emitters (Volkswagen Foundation)
  • Electronic and optical properties of molecular nanostructures (Helmholtz Association)
  • Piezoresistivity in nanocrystalline graphite (DFG)

His research has produced 80+ publications and 5 patents, including breakthroughs in single-photon emission, quantum photonic circuits, and nanotube sorting. He has supervised 18 PhD students and hosted 9 postdocs, including Alexander von Humboldt and DAAD fellows. Awards include the IBM Pat Goldberg Memorial Award (2012) and the Helmholtz Young Investigator Award (2005).