Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 13: Poster: Interfaces and Thin Films
CPP 13.31: Poster
Dienstag, 27. März 2012, 18:15–20:45, Poster A
Modification of wrinkled surfaces through defects — •Patrick Wünnemann1, Marco Phillip Schürings1, Felix Plamper2, Andrij Pich3, and Alexander Böker1 — 1DWI an der RWTH Aachen, Lehrstuhl für Makromolekulare Materialien und Oberflächen, RWTH Aachen, D-52056 Aachen, Germany — 2IPC an der RWTH Aachen, Lehrstuhl für Physikalische Chemie, RWTH Aachen, D-52056 Aachen, Germany — 3DWI an der RWTH Aachen, Funktionale und Interaktive Polymere, RWTH Aachen, D-52056 Aachen, Germany
We verify the effects of defects introduced to soft Poly(dimethylsiloxane) (PDMS) substrates through the formation of wrinkle structures to develop new patterns of wrinkled surfaces. These stress induced disruptions lead to star-like wrinkled sufaces on the nanoscale. Next to the effects of single defects we investigate wrinkled structures in the area between adjacent defects. First description of the domains, the wavelength and the induced pattern in the vicinity of the nanodefects are characterized by scanning force microscopy (SFM). The focus of our work is the correlation between wavelength and thickness of the oxidized PDMS-surface and the applied strain. Compared to other systems these defects are more likely to be fabricated by lithographic methods. We further study the possible use as a template for the two-dimensional arrangement of soft matter particles.