Seminarium Advanced Methods of Semiconductor Research – wtorek 24 marca 2026
We cordially invite you to Advanced Methods of Semiconductor Research Seminar on Tuesday 24th of March 2026 at 13:15 in room 321, building A-1, where there will be delivered a lecture:
The impact of lanthanide-doped core-shell nanoparticle architecture on the efficiency of Resonance Energy Transfer (FRET)
by Dr Agata Kotulska
from Department of Experimental Physics, Wrocław Tech
This presentation is related to the approaching end of the employment contract at Wrocław Tech.
The lecture abstract is attached below.
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Lecture abstract:
Resonance Energy Transfer (FRET) is a non-radiative process where energy is transferred from an excited donor to an acceptor, with an efficiency that is highly sensitive to the distance (within a few nanometers) between them. Lanthanide-doped nanocrystals are alternative fluorescent labels due to their photostability, narrow emission bands, and long luminescence lifetimes compared to traditional organic dyes. The efficiency of this transfer in core-shell nanocrystals is influenced by internal energy migration between Ln3+ ions. Due to the presence of thousands of dopant ions, rate equations cannot fully account for internal energy migration pathways. The total distance excitation energy travels before reaching the surface directly impacts the resonance transfer efficiency. Monte Carlo modeling explains how multi-donor migration affects energy output to surface acceptors. Applying Monte Carlo modeling allows for the accurate prediction of energy output to acceptors and supports the interpretation of experimental data.
A. M. Kotulska, K. Prorok, O. Bezkrovnyi, A. Pilch-Wróbel, A. Bednarkiewicz, Role of energy migration in the efficiency of upconversion-based resonance energy transfer to organic acceptors, Journal of Luminescence 275, 120823, 2024. DOI: 10.1016/j.jlumin.2024.120823
A. M. Kotulska, A. Pilch-Wrobel, S. Lahtinen, T. Soukka, A. Bednarkiewicz, Upconversion FRET quantitation: the role of donor photoexcitation mode and compositional architecture on the decay and intensity based responses, Light: Science & Applications 11, 256 (2022). DOI: 10.1038/s41377-022-00946-x
A. Pilch-Wrobel , A. M. Kotulska, S. Lahtinen, T. Soukka, A. Bednarkiewicz, Engineering the Compositional the Architecture of Core-Shell Upconverting Lanthanide-Doped Nanoparticles for Optimal Luminescent Donor in Resonance Energy Transfer: The Effects of Energy Migration and Storage, Small, 2200464 (2022). DOI: 10.1002/SMLL.202200464
A. M. Kotulska, Försterowski Rezonansowy Transfer Energii (FRET) – podstawy fizyczne i zastosowania, Postępy Fizyki 72 (1), 8 (2021). DOI: 10.61947/uw.PF.2021.72.1.8-15