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Nanowire transformation and annealing by Joule heating.

Magnus M Hummelgård, Renyun R Zhang, Torbjörn T Carlberg, Damjan D Vengust, Damjan D Dvorsek, Dragan D Mihailovic, and Håkan H Olin

Nanotechnology 21(16):165704 (2010) PMID 20351407

Joule heating of bundles of Mo(6)S(3)I(6) nanowires, in real time, was studied using in situ TEM probing. TEM imaging, electron diffraction, and conductivity measurements showed a complete transformation of Mo(6)S(3)I(6) into Mo via thermal decomposition. The resulting Mo nanowires had a conductivity that was 2-3 orders higher than the starting material. The conductivity increased even further, up to 1.8 x 10(6) S m( - 1), when the Mo nanowires went through annealing phases. These results suggest that Joule heating might be a general way to transform or anneal nanowires, pointing to applications such as metal nanowire fabrication, novel memory elements based on material transformation, or in situ improvement of field emitters.

DOI: 10.1088/0957-4484/21/16/165704
Version: za2963e q8za0 q8zb9 q8zc7 q8zdf q8ze5 q8zf1 q8zg0
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