title: Nanowire transformation and annealing by Joule heating.
abstract: 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.
authors.affiliation: Department of Natural Sciences, Engineering and Mathematics, Mid Sweden University, SE-851 70 Sundsvall, Sweden. magnus.hummelgard@miun.se
authors.forename: Magnus
authors.initials: M
authors.lastname: Hummelgård
authors.forename: Renyun
authors.initials: R
authors.lastname: Zhang
authors.forename: Torbjörn
authors.initials: T
authors.lastname: Carlberg
authors.forename: Damjan
authors.initials: D
authors.lastname: Vengust
authors.forename: Damjan
authors.initials: D
authors.lastname: Dvorsek
authors.forename: Dragan
authors.initials: D
authors.lastname: Mihailovic
authors.forename: Håkan
authors.initials: H
authors.lastname: Olin
mesh_terms: D003460:Crystallization / Q000379:methods*; D004553:Electric Conductivity; D006361:Heating / Q000379:methods; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances