Kite growth is a process that utilizes laminar gas flow in chemical vapor deposition to grow long, well-aligned carbon nanotubes (CNTs) for electronic application. This uses metal nanoparticles (NPs) as catalytic seeds CNT growth. However, these NPs remain impurities the grown CNT. In this study, nanodiamonds (NDs) with negligible activity were utilized nonmetallic instead of catalysts because ...