Abstract | 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 [1-3]. In my talk, I will discuss how the extreme field enhancement provided by the tip enables atomic-scale optics can be applied to induce photochemical reactions with sub-nm precision [3], study individual triplet emitters [4], and control single-molecule fluorescence via local environment.
References [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 (15), 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. [4] LQ Zheng, F.J.R. Costa, A. Grewal, R. Wang, F. Wang, W. Li, A. Rosławska, K. Kuhnke, K. Kern, arXiv:2509.08496, 2025.
|
