Berlin 2012 – scientific programme

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O: Fachverband Oberflächenphysik

O 35: Poster Session II (Polymeric biomolecular films; Nanostructures; Electronic structure; Spin-orbit interaction; Phase transitions; Surface chemical reactions; Heterogeneous catalysis; Particles and clusters; Surface magnetism; Electron and spin dynamics; Surface dynamics; Methods; Electronic structure theory; Functional molecules)

O 35.24: Poster

Tuesday, March 27, 2012, 18:15–21:45, Poster B

Embedding Nanowires by means of Spin Coating — •Jan Schmidtbauer, Franziska Schuette, Roman Bansen, Thomas Teubner, and Torsten Boeck — Leibniz-Institute for Crystal Growth

Nanowires are promising structures for future optoelectronic devices as well as for thermoelectric applications, gas sensors and Li-ion batteries. Typically, nanowires are removed from the substrate for electric characterization. However, contacting nanowires turns out to be challenging without removing them from the substrate. For this purpose, embedding nanowires in an insulating matrix which is protruded by the nanowire tips can provide a promising way to contact the wire using an AFM. We propose an embedding process by means of spin coating hydrogen silsesquioxane (HSQ) and curing the layer subsequently. The curing process is conducted at temperatures up to 700^∘C. Thus, the HSQ layer transforms from a Si-O-Si cage-like structure into a Si-O-Si network (SiO₂). Different approaches are compared to uncover the nanowire tips.