Einbringung von Instabilitäten in großflächige Dünnschichtbeschichtungen mit komplexen Flüssigkeiten

• Antragsteller: Professor Dr. Evgeny Gurevich; Professor Dr. Uwe Thiele
• Fachliche Zuordnung: Beschichtungs- und Oberflächentechnik ; Statistische Physik, Nichtlineare Dynamik, Komplexe Systeme, Weiche und fluide Materie, Biologische Physik
• Förderung: Förderung von 2018 bis 2022
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 396768855

• Erstellungsjahr: 2022

Zusammenfassung der Projektergebnisse

The main aim of the project was to establish the morphological phase diagrams for structures created in coating processes and to understand the underlying instability mechanisms. These instabilities fundamentally limit rapid industrial uniform thin-film coating processes as, for example dip coating, blade coating and slot-die coating techniques. To achieve this aim thin-film models have been developed and analyzed by time-simulation and path-continuation techniques for one- and two-dimensional substrates. The advance of the underlying techniques, in particular, pathcontinuation for two-dimensional systems and time-periodic states, i.e., for the deposition of regular patterns has also be achieved.

Projektbezogene Publikationen (Auswahl)

• Self-organised dip-coating patterns of simple, partially wetting, nonvolatile liquids. Phys. Rev. Fluids, 4:123903, 2019
  W. Tewes, M. Wilczek, S. V. Gurevich, and U. Thiele
  
• Two-dimensional patterns in dip coating - first steps on the continuation path. Phys. D, 409:132485, 2020
  P.-M. T. Ly, K. D. J. Mitas, U. Thiele, and S. V. Gurevich
  
• Bifurcation study for a surface-acoustic-wave-driven meniscus. Physical Review Fluids, 6(9):094002, 2021
  K. D. J. Mitas, O. Manor, and U. Thiele
  
• Pattern formation in slot-die coating, 2021
  M. Kasischke, S. Hartmann, K. Niermann, D. Kostyrin, U. Thiele, and E. L. Gurevich