Mainz 2026 – scientific programme
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MO: Fachverband Molekülphysik
MO 21: Poster – Cluster and Nanoparticles (joint session MO/A)
MO 21.5: Poster
Wednesday, March 4, 2026, 17:00–19:00, Philo 1. OG
Single-shot imaging and modeling of individual water nanodroplets with an intense extreme ultraviolet laboratory source — •Lea Schüpke1, José Gómez Torres1, Linos Hecht1, Frederic Ussling1, Alessandro Colombo1, Katharina Kolatzki1, Indrani Dey1, Changji Pan1, Isabelle Bollier1, Constantin Koch1, Ehsan Hassanpour1, Yves Acremann1, Mario Sauppe1, Björn Senfftleben1, Hanchao Tang2, Arnab Choudhury2, Bruce Yoder2, Ruth Signorell2, and Daniela Rupp1 — 1ETH Zürich, DPHYS — 2ETH Zürich, DCHAB
Our unique high-intensity extreme ultraviolet (XUV) beamline enables flash-imaging of individual free-flying nanoparticles in a lab environment, thus avoiding the severe access limitations of large-scale facilities. We have started to investigate the freezing dynamics of supercooled water droplets between few 100 nm and few µm in diameter. This size range is mostly unexplored due to the lack of suitable imaging methods. In this work, Mie-simulations are discussed that allow to understand subtle changes in the diffracted light distribution caused by aggregate state changes and droplet sizes.
Keywords: Mie Scattering; Water nanoparticles; Single-droplet imaging