Regensburg 2025 – scientific programme

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BP: Fachverband Biologische Physik

BP 5: Membranes and Vesicles I

BP 5.2: Talk

Monday, March 17, 2025, 11:45–12:00, H46

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

Recent experimental advances have enabled precise studies of pressure wave propagation through monolayers at the air-water interface, triggered by embedded azobenzenes and light-induced trans-to-cis isomerization. This talk presents theoretical results, which show that fractional nonlinear wave equations of Lucassen type can describe wave propagation on monolayers quantitatively. The nonlinear differential wave equation includes fractional time derivatives, incorporates measured Langmuir isotherms and a dynamic second viscosity that depends on the local state of the monolayer.

Keywords: Monolayer; Surfacewave; Wavepropagation