Regensburg 2010 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 74: Nanostructures at surfaces: Other

O 74.1: Vortrag

Donnerstag, 25. März 2010, 15:00–15:15, H34

UTAM based Surface Nano-Structuring for Functional Surfaces — •Stefan Ostendorp, Yong Lei, Christian Heckel, and Gerhard Wilde — WWU Münster, Institut für Materialphysik, Wilhel-Klemm-Straße 10, 48149 Münster, Germany

Versatile surface nano-structuring techniques with high throughput and low costs are highly desirable. The UTAM (Ultra-Thin Alumina Membrane) technique is such a method to create highly regular surface structures: nano-pores, nanodots and free-standing one-dimensional nanostructures (wires and tubes). Based on a wet-chemical anodization process of Aluminum, there is in principle no limitation to the patterning-area of the nano-structured surface. We want to present our latest results concerning this UTAM surface nano-structuring technique. Besides porous layer structures and metallic or semiconducting nano-particles and wires, we are able to create surface arrays or 3D-structures of functional molecules. All these structures have in common, that we can adjust their size and spacing within certain limitations by changing the preparation conditions for the UTAM.

Especially some functional molecules were sublimated through and along the pores of UTAMs on different substrates to obtain tubular structures. To determine the properties of these molecules, which have a wide range of possible applications e.g. in the field of opto-electronics, we use different techniques like AFM, SEM, IV-characterization or PL-spectrometry.