DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2010 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 30: Poster: Micro and Nanofluidics

CPP 30.4: Poster

Wednesday, March 24, 2010, 17:30–19:00, Poster C

Wetting of grooved elastic substrates — •Carsten Herrmann1, Dominik Michler1, Konstantina Kostourou2, Stefan Bommer1, and Ralf Seemann11Experimental Physics, Saarland University, D-66041 Saarbrücken — 2MPI for Dynamics and Self-Organisation, Bunsenstraße 10, D-37073 Göttingen

The wetting morphologies on grooved viscoelastic substrates are considered experimentally. Due to their elastic properties, the geometry of rubber substrates is changed in the presence of wetting morphologies by the virtue of the capillary forces. Depending on geometry and wettability of the substrate an attractive or repulsive force between neighboring grooves respectively neighboring ridges emerge. This leads to different wetting scenarios and a lateral ordering of the wetting morphologies. The substrates are fabricated from Polydimethylsiloxane (PDMS) rubber and consist of straight parallel grooves having a rectangular shaped cross section. The wetting morphologies are generated by gas phase deposition and observed in situ by optical microscopy. We explore the lateral order and the shape of the emerging liquid morphologies as function of wettability and geometry.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2010 > Regensburg