Nanoscale Phenomena


At the nanoscale, physical and chemical properties of materials may vary as compared to their bulk counterparts. Size, as well as shape dependent changes may occur, which call for an in-depth structural and compositional characterization. Our goal is a combined investigation of nanoscale phenomena by synchrotron and laboratory based methods. We study the transition from large ensembles towards individual nanostructures allowing a one-to-one correlation between atomic structure and nanoscale properties.

Current research fields

  • Oxidation in confinement
  • Structure and formation of 2D nanoparticle superlattices on graphene
  • Polymer based nanostructures
  • Semiconductor nanostructures


Priv. Doz. Dr. Thomas Keller

Dr. Vedran Vonk

Prof. Dr. Andreas Stierle

Project(s) involved

NFFA, BMBF Project NanoXcat, HELIOS


Probing the electrolyte transfer in ultrathin polypyrrole films by in situ X-ray reflectivity and electrochemistry, Pirmin H. Lakner, Manuel Brinker, Christoph Seitz, Leon Jacobse, Vedran Vonk, Milena Lippmann, Sergey Volkov, Patrick Huber, Thomas F. Keller, Langmuir, 36, 45, 13448 (2020)

Atomic Structure of Pt nanoclusters supported by graphene/Ir(111) and reversible transformation under CO exposure, D. Franz, N. Blanc, J. Coraux, G. Renaud, S. Runte, T. Gerber, C. Busse, T. Michely, P. Feibelman, U. Hejral, A. Stierle, Phys. Rev. B 93, 4 (2016)

In situ oxidation study of Pd–Rh nanoparticles on MgAl2O4(001), P. Müller, U. Hejral, U. Rütt and A. Stierle, Phys. Chem. Chem. Phys. 16, 13866 (2014)

Pathway Mediated Microstructures and Phase Morphologies of Asymmetric Double Crystalline Co-Oligomers, X. Zhang, Z. Ouyang, R. Schulze, T. F. Keller, K. D. Jandt, Z. Su, RSC Advances 4, 7900 (2014)

Atomic structure and crystalline order of graphene supported Ir nanoparticle lattices, D. Franz, S. Runte, C. Busse, S. Schumacher, T. Gerber, T. Michely, M. Mantilla, V. Kilic, J. Zegenhagen, und A. Stierle, Phys. Rev. Lett. 110, 065503 (2013)

In Situ Oxidation Study of Pt Nanoparticles on MgO(001), U. Hejral, A. Vlad, P. Nolte, A. Stierle, J. Phys. Chem. C 2013, 117, 19955 (2013)

How the Surface Nanostructure of Polyethylene Affects Protein Assembly and Orientation, T. F. Keller, J. Schönfelder, J. Reichert, N. Tuccitto, A. Licciardello, G. M. L. Messina, G. Marletta, K. D. Jandt, ACS Nano 5, 3120 (2011)