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BP: Fachverband Biologische Physik

BP 14: Poster Session II

BP 14.22: Poster

Dienstag, 10. März 2026, 18:00–21:00, P2

Modelling Wave Propagation on Monolayers — •Philipp Zolthoff and Jan Kierfeld — TU Dortmund University, Dortmund, Germany

Recent experimental advances have enabled precise studies of pressure wave propagation through monolayers at the air-water interface, triggered by light-induced conformation changes of embedded azobenzenes. We model wave generation and propagation using a fractional Lucassen-type wave equation and compare experimental results on pulse shape and pulse propagation in detail with numerical simulations in order to describe experiments quantitatively and unravel the influence of possible non-linearities and different rheological monolayer models. Particular attention is paid to the question how the influence of non-linearities and rheology changes for different states of the monolayer, i.e., in different regions along its Langmuir isotherm.

Keywords: Monolayer; Lucassen wave; Langmuir; Azobenzene