Hochschule Karlsruhe Hochschule Karlsruhe - University of Applied Sciences
Hochschule Karlsruhe Hochschule Karlsruhe - University of Applied Sciences

Institute for Digital Materials Research

Kooperative Promotion: Simulation der Fl├╝ssigkeitspropagation in Membranstrukturen (zusammen mit der Sartorius GmbH)

Drops on porous substrate (without evaporation):

  • Radial penetration of a droplet into porous structures (Radial Wicking)
  • Experiment with solid structure and known wetting angle to calibrate the model parameter
  • Parameter study: variation of structure and wetting properties

Contact angle hysteresis:

  • Investigation of Advancing and Receeding Contact Angle
  • Contact angle hysteresis on surface with macroscopic surface roughness
  • Experiments to determine surface roughness and contact angle hysteresis
  • Microscopic resolution of surface roughness ==> investigation of pinning effects
  • Parameter study: variation of surface roughness and wetting properties
  • Closed surface studies

Contact angle hysteresis with evaporation:

  • Contact angle hysteresis on surface with macroscopic surface roughness and evaporation
  • Microscopic resolution of surface roughness with additional evaporation
  • Experiments to determine the evaporation rate of a droplet
  • Comparison of contact angle hysteresis: neglect/consideration of evaporation
  • Parameter study: variation of surface roughness and wetting properties
  • Closed surface studies

Droplets on porous substrate with evaporation:

  • Radial penetration of a droplet into porous structures (Radial Wicking)
  • Evaporation
  • Comparison of penetration behaviour: neglect/consideration of evaporation/contact angle hysteresis
  • Parameter study: variation of structure and wetting properties (structures and wetting properties)
  • Transfer to current issues (Sartorius)