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Chains of carbon atoms in the sp1 hybridization are the one-dimensional analog of graphene. The first experimental studies of electrical transport in atomic carbon chains have shown a much lower conductivity than the quantum conductance limit. Here we explain, experimentally and by ab-initio transport modeling, the limited conductivity by studying the influence of carbon contacts in different hybridization...
Electrical contacts between iron nanoparticles and different sp2- and sp1-hybridized carbon nanomaterials are established in an in situ experiment in the transmission electron microscope. The starting material, consisting of FeO nanoparticles, is reduced in situ when contacted to graphitic carbon and by passing an electrical current. The remaining Fe particles form covalent bonds with the graphitic...
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