| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1545140 | Physica E: Low-dimensional Systems and Nanostructures | 2012 | 5 Pages |
This paper reports on the structural and electrical characteristics of Joule heat welds in ultrathin Pt wires with diameters of 600–800 nm. The wires have a bamboo structure where the crystal grains are aligned only in the axial direction. They were welded together in a self-completed manner in air by Joule heating. The electrical resistance of the welded wire system was measured using a potential drop technique. It was found by transmission electron microscope observations that the region affected by welding was very narrow and it appeared that a new grain boundary had been created in this region. Moreover, the welds were found to have good electrical characteristics and the electrical resistance at the weld depended on its cross-sectional area.
► Two ultrathin Pt wires were welded together in a self-completed manner in air by Joule heating. ► The little damage welding of ultrathin Pt wires was verified to be realized with Joule heating. ► The welded region of two ultrathin wires was very narrow. ► The welds were found to have good electrical characteristics.
