Abstract
Carbon nanotubes (CNTs) were grown using plasma-enhanced chemical vapor deposition on silicon oxide nanowires (SiO x NWs) to construct one-dimensional hierarchical heterostructures. To grow the CNTs on the SiO x NWs, the nanowire surface was decorated with Ni seed particles by direct physical deposition. The nanosized Ni seed particles allowed the CNTs to nucleate on the nanowire surface. Scanning- and transmission electron microscopy verified that branches of CNTs project from the SiO,NWs throughout the entire length of the individual SiO x NWs. The initial Ni seed size can be used as one of the process parameters to control the CNT length and density on the nanowire surface.
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