Selective Growth of Carbon Nanotubes on Printed Fe₃O₄ Nanoparticles

Abstract

For selective growth of Carbon Nanotubes (CNTs) or Carbon Nanofibres (CNFs) a print technique was used to distribute the catalyst on the substrate surface. Suspensions of Fe 3 O 4 nanoparticles (NPs) (~ 15-20 nm) in chloroform (CHCl 3 ) were prepared and printed by a soft nano-imprinting lithography process (NIL) on quartz and silicon substrates. After printing and evaporation of the solvent the catalyst distribution on the substrate surfaces was investigated. After different types of pre-treatments the hot-filament CVD followed depositing nanotubes and nanofibres.