Sequentially grown carbon nanotubes

Vincent Jourdain (1) , H Kanzow , M Castignolles , A Loiseau , P Bernier

1 GDPC - Groupe de Dynamique des Phases Condensées

Nanofibers consisting of repeated units of multiwall carbon nanotubes (MWCNT) with a metal particle encapsulated at one end were synthesized by thermal chemical vapor deposition (CVD) of methane/hydrogen on Ni-Fe catalysts. The grown structures were studied by scanning electron microscopy (SEM), low and high-resolution transmission electron microscopy (TEM). Sequential growth is proposed to explain the periodicity of the nanofibers. The nanofibers are broken by sonication into single elementary units open at one end.

Mots clés: CATALYTIC GROWTH

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Vincent Jourdain, H Kanzow, M Castignolles, A Loiseau, P Bernier. Sequentially grown carbon nanotubes. 16th International Winterschool on Electronic Properties of Novel Materials, Mar 2002, KIRCHBERG (AUSTRIA), France. pp.178-181. ⟨hal-00656971⟩