Dresden 2026 – wissenschaftliches Programm

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PRV: Preisträgervorträge

PRV III

PRV III: Preisträgervortrag

Dienstag, 10. März 2026, 13:00–13:45, HSZ/0004

Optics of single molecules explored with sub-nm precision — •Anna Rosławska — Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany — Laureate of the Gaede-Prize 2026

Light-matter interaction is essential for mechanisms such as luminescence, photosynthesis, and energy harvesting, defining the emission characteristics of molecular systems and governing the conversion of energy between photons and electrons. While these processes are intensively studied and employed, little is known about their dependence on atomic-scale properties since reaching such precision in optics is extremely demanding. This challenge is nowadays overcome thanks to the combination of optical spectroscopy approaches with scanning probe microscopy, which profit from the extreme field enhancement provided by the tip that enables atomic-scale optics [1]. In my talk, I will discuss how this approach can be applied to gate fluorescence by individual charges [2], used to induce photochemical reactions with sub-nm precision [3], and enables probing optical properties of individual biological pigments.

[1] A. Rosławska, T. Neuman, B. Doppagne, A. Borisov, M. Romeo, F. Scheurer, J. Aizpurua, G. Schull, Phys. Rev. X, 12, 011012, 2022.

[2] K. Kaiser, S. Jiang, M. Romeo, F. Scheurer, G. Schull, A. Rosławska, Phys. Rev. Lett. 133, 156902, 2024.

[3] A. Rosławska, K. Kaiser, M. Romeo, E. Devaux, F. Scheurer, S. Berciaud, T. Neuman, G. Schull, Nat. Nanotechnol., 19, 738-743, 2024.

Keywords: scanning tunneling microscopy (STM); STM-induced luminescence (STML); tip-enhanced photoluminescence (TEPL); single molecule fluorescence