Dresden 2014 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 34: Poster Session

MM 34.19: Poster

Tuesday, April 1, 2014, 18:00–20:00, P4

Impact of hydrodynamic parameters on the regularity of self-assembling nanostructures — •Dennis Langenkämper, Stefan Ostendorp, Nina Winkler, Jörn Leuthold, Martin Peterlechner, and Gerhard Wilde — Institut für Materialphysik, WWU Münster, Germany

One promising technique for fabricating large nanostructure arrays is based on Anodic Aluminium Oxide (AAO) membranes as fabrication masks or templates. With these structures it is possible to fabricate large-scale arrays of highly regular surface nano-structures including nano-particles as well as wires and tubular structures. Thereby AAO based surface nano-structuring provides an exceptional high throughput at low fabrication costs. Additionally structural parameters such as the size, shape and spacing of resulting nanostructures can be tuned by adjusting the masks’ fabrication parameters. It has been shown that especially the anodization temperature and the used electrolyte and its concentration at given anodization voltage determine the properties and regularity of the AAO membrane. Our work now focuses on the impact of hydrodynamic fabrication parameters on the structures’ regularity. Membranes fabricated under different hydrodynamic conditions varying in laminar and turbulent flow and flux of the respective electrolyte used during anodization have been analyzed by a computational/graphical method based on Delauney Triangulations and Voronoi Diagrams applied to high resolution SEM micrographs of the respective structures.