Aligned High Density Semi‐Conductive Ultra‐Small Single‐Walled Carbon Nanotubes

Abstract

Zeolite type material (AlPO‐5, AFI‐type) with rod‐like morphology and mono‐dimensional channel system running along the long crystal axis was vertically grown on a stainless‐steel plate. The organic template used in the synthesis was carbonized to generate single‐walled carbon nanotubes (SWCNTs). Thus, SWCNTs with a diameter of 0.4 nm, perfectly aligned and vertically oriented to the support surface with a density of 2.6 × 105 SWCNTs μm−2, were obtained. The free end of AlPO‐5 crystal was chemically etched in order to create contact surface and measure the conductivity of SWCNT@AlPO‐5 film which was found to be 4.16 × 10−1 Ω−1 cm−1. This approach of aligned SWCNTs can be applied to different types of substrates, thus opening the road to practical uses of SWCNTs.