Berlin 2008 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 23: Poster session

MM 23.33: Poster

Dienstag, 26. Februar 2008, 14:45–18:00, Poster B

Fabrication of metallic nanowires and their hydrogen sorption — •Felix Schlenkrich, Sönke Schmidt, and Astrid Pundt — Institut für Materialphysik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen

Nanowire alignments of palladium and niobium have been produced by small angle sputtering onto facetted sapphire and sputter-eroded silicon, using the self shadowing effect of the facets and ripples, respectively. The achieved wire length is in the cm range (length of sample) and wire widths of 50nm and heights of 15nm were obtained. Island growth has been investigated, and the regimes of coalescence and fully covered wire morphology of the metallic stripes onto the facets and ripples were achieved. Wire characterisation and the behaviour of metal wires during the exposure in hydrogen atmosphere (surface modification) was investigated with STM and AFM, using Non-Contact mode and Contact mode. Resistivity measurements on palladium wire alignments during hydrogen loading were performed. The influence of hydride formation on the resistivity of the wires will be discussed.