Silicon substrates Agglomeration 2 Aligned nanotubes 2 Alternating electric field 2 Array densities 2 BaBiO3 2 BaBiO₃ 2 Carbon nanotubes 2 Catalyst material 2 Catalysts 2 Chemical vapor deposition 2 Chemical vapour deposition 2 Commercial nanoparticles 2 Deposition conditions 2 Electric fields 2 Epitaxial growth 2 Growth stages 2 In-situ synthesis 2 Iron oxide 2 Iron oxide nanoparticle 2 Iron oxides 2 Magnetite 2 Magnetite nanoparticles 2 Multiwalled carbon nanotubes (MWCN) 2 Nano-materials 2 Nanomaterials 2 Nanoparticle concentrations 2 Nanoparticles 2 Nanostructured materials 2 Nanotube growth 2