Starting with the second funding period, the new project A09 is dedicated to nanoscale investigations of wetting and dewetting during imbibition and nucleation. It should allow a deeper understanding of surface effects on the deformation of the contact line on a nanoscopic length scale. A scanning force microscope is used to scan the contact line with a resolution of 10-30 nm. Differences between nanoscopically and macroscopically measured contact angles are analyzed. In addition to simple fluids and surfaces, mixtures and mesoporous as well as swellable surfaces are used. A nanoscale body immersed into the air/water will be used to study the local distribution of substances. This generic configuration will be compared directly with simulations.
Prof. Dr. Regine von Klitzing
+49 6151 16-24506
Löhmann, Oliver and Zerball, Maximilian and von Klitzing, Regine (2018):
Water Uptake of Polyelectrolyte Multilayers Including Water Condensation in Voids.
34, In: Langmuir, (38), pp. 11518-11525, ISSN 0743-7463,
Luderitz, L. A. C. and von Klitzing, R. (2012):
Scanning of Silicon Wafers in Contact with Aqueous CTAB Solutions below the CMC.
28, In: Langmuir, (7), pp. 3360-3368, ISSN 0743-7463,
Hanni-Ciunel, K. and Findenegg, G. H. and von Klitzing, R. (2007):
Water contact angle on polyelectrolyte-coated surfaces: Effects of film swelling and droplet evaporation.
5, In: Soft Materials, (2-3), pp. 61-73, ISSN 1539-445X,