Dresden 2006 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
O: Oberflächenphysik
O 4: Nanostructures I
O 4.5: Vortrag
Montag, 27. März 2006, 12:15–12:30, PHY C213
Formation of a contacted nanobridge without micropatterning — •S. Wille1, S. Wu1, F. H. Gojny2, M. H. G. Wichmann2, B. Fiedler2, K. Schulte2, and R. Adelung1 — 1Lehrstuhl für Materialverbunde, Technische Fakultät der CAU Kiel, Kaiserstr. 2, 24143 Kiel, Germany — 2Kunststoffe und Verbundwerkstoffe, Technische Universität Hamburg-Harburg (TUHH), Denickestr. 15, 21073 Hamburg, Germany
There are many applications for carbon nanotubes in research nowadays. In our approach we use double wall carbon nanotubes (DWCNTs) as a substrate. Starting with an epoxy-DWCNT composite, there are only a few steps to get a nanobridge structure, suitable for, e.g. a H2-sensor. As first step, µm-scale channels were fabricated by etching the composite. These cracks were found to be bridged by the DWCNTs. The bridges themselves can be used as a substrate of a metal-nanostructure (e.g. Au, Pd). By evaporating under a small angle, we make use of the shadowing of the crack walls. This avoids a shortcut and covers simultanously the channels bridged by the DWCNTs with metal. The obtained metal tubes that form around the carbon nanotubes determine the conductivity of the ensemble. The details of the formation process will be discussed as well as possible applications.